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  • 351. Kifetew, Girma
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Berglund, L A
    Lindberg, H
    The effect of drying on wood fracture surfaces from specimens tested in wet condition1998In: Wood Science and Technology 32 1998 pp 83-94Article in journal (Refereed)
  • 352.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Användningstester Plattformen2008Report (Other academic)
  • 353.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Datorstödd undervisning med legorobotar ' nedslag i den sociala interaktionen i lärandeprocessen om legorobotar2004Conference paper (Refereed)
  • 354.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Datorstödd undervisning med legorobotar: Elevers erfarenheter2007In: Didaktisk Tidskrift, ISSN 1101-7686, Vol. 17, no 4Article in journal (Refereed)
  • 355.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Hur används datorn som stöd i språkundervisningen? - hinder och möjligheter2001Report (Refereed)
    Abstract [sv]

    Uppsatsen beskriver olika frågor angående datorstödd språkundervisning. Jag har intervjuat sex språklärare med utgångspunkt från följande fyra övergripande frågeområden frågeområden: användandet av datorstöd i undervisningen, praktiska möjligheter och problem, syn på elevernas inställning och syn på fortbildning. Detta för att få reda på lärarnas attityder till dessa frågor och för att få en inblick i hur användandet av datorstöd ser ut i språkundervisningen idag. Det allra viktigaste när det gäller datorstödd undervisning är att den sker med en kritisk reflektion. Olika författare, liksom respondenterna påpekar att användandet av den nya informationstekniken i undervisningen måste fylla en pedagogisk funktion och inte finnas i undervisningen för teknikens skull. Jag har kommit fram till att det finns en positiv inställning till att använda datorer bland språklärare idag. Alla lärare i min undersökning använder datorer mer eller mindre. Ibland hindras de dock i sitt användande av olika praktiska hinder som till exempel brist på resurser och bra programvara. Skolorna har olika förutsättningar för att ge lärarna möjlighet att utveckla sitt datoranvändande i undervisningen. En del lärare har endast tillgång till datorer vid enstaka tillfällen, medan det finns andra lärare som har ständig tillgång till datorer i undervisningen. Detta gör att det finns en spridning från lärare som endast använder datorn till informationssökning, till lärare som låtit datorn ersätta läroboken.

  • 356.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Legorobotar i undervisningen ' Hur ser pojkar och flickor på sitt arbete?2004In: Utbilder 1Article in journal (Other (popular science, discussion, etc.))
  • 357.
    Kilbrink, Nina
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Pupils' Learning in Technical Vocational Education: Theory and Practice2010Other (Other (popular science, discussion, etc.))
  • 358.
    Kilbrink, Nina
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Bjurulf, Veronica
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Teoretiska och praktiska uppgifter i teknikundervisningen2009In: Cetis ,Norrköping, no 1, p. 1-5Article in journal (Other (popular science, discussion, etc.))
  • 359.
    Kilbrink, Nina
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Enochsson, Ann-Britt
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    Söderlind, Linda
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    "As a Teacher, You Have to Take Risks": A Narrative Study on Digital Technology in Swedish Vocational Education2017Conference paper (Refereed)
  • 360.
    Kilbrink, Nina
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Segolsson, Mikael
    Pupils' learning and experiences of programming LEGO robots2005Conference paper (Refereed)
  • 361.
    Kilbrink, Nina
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Söderlind, Linda
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    Enochsson, Ann-Britt
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    Digitala verktyg som gränsobjekt mellan skola och arbetsliv i gymnasial yrkesutbildning: Två svensklärares berättelser2016Conference paper (Refereed)
  • 362.
    Kinnear, Allan
    et al.
    Department of Mechanical and Mechatronic Engineering, Bloemfontein, Central University of Technology, Free State, South Africa.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013), Science, Mathematics and Engineering Education Research.
    Yadroitsava, Inna
    Department of Mechanical and Mechatronic Engineering, Bloemfontein, Central University of Technology, Free State, South Africa.
    Yadroitsev, Igov
    Department of Mechanical and Mechatronic Engineering, Bloemfontein, Central University of Technology, Free State, South Africa.
    Manufacturing, microstructure and mechanical properties of selective laser melted Ti6Al4V-Cu2017Conference paper (Refereed)
  • 363. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and Surface Properties of Chitosan Coated Greaseproof Paper2005Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Greaseproof papers with different air permeances were coated with chitosan, both on a bench scale and on a pilot scale to study the conditions necessary to obtain a packaging material with good oxygen barrier and high grease resistance. The results showed that an oxygen transmission rate in the same range as that of poly(ethylene terephatalate) was obtained at coat weights exceeding 5 g/m². High grease resistance values were also obtained at this coat weight while water resistance was slightly deteriorated due to the hygroscopic character of chitosan. However, that coat weight could only be achieved on papers coated on a bench scale. On a pilot scale, the maximum coat weight was 0.2 g/m² because the solids content of the coating solution used was limited to 1.0 wt%. The coating on a pilot scale was performed using the metered size press technique. To increase the coat weight, the solids content of the solution must be increased considerably. A coating technique which yields higher coat weights might also be necessary.

  • 364. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and Surface Properties of Chitosan Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Greaseproof papers of different air permeance (AP) were coated with chitosan, both on a bench scale and a pilot scale to study the conditions to obtain a packaging material with low oxygen permeability (OP) and high grease resistance. The results showed that excellent OP, in the same range as for PETP poly(polyethylene terphatalate), was obtained at coat weights exceeding 5 g/m². Also, at this coat weight excellent grease resistance were obtained. On the other hand, the coated papers did not yield any barrier against water. However, that coat weight could only be obtained on papers coated on a bench scale. On a pilot scale the maximum coat weight was 0.2 g/m². That low coat weight was due to the low solids of the coating solution used which was only 1.0%. The coating on a pilot scale was performed using metered size press technique. To increase the coat weight the solids of the solution must be increased to approximately 20%. This presupposes a considerably lower molecular mass of the chitosan than that of the product used in this study. A coating technique which allows higher coat weights might also be necessary

  • 365. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and Surface Properties of Chitosan Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
  • 366. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and Surface Properties of Chitosan-Coated Greaseproof Paper2006In: Carbohydrate Polymers, 65(4) 453-460 (2006)Article in journal (Refereed)
  • 367. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and Surface Properties of Chitosan-Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
  • 368.
    Korin, Christer
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Hallbäck, Nils
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Junghans, R
    Failure Modes of Adhesively Joined Carton Board2008In: Journal of Adhesion Science and Technology, 2008Article in journal (Refereed)
  • 369.
    Korin, Christer
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Lestelius, Magnus
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Tryding, J
    Hallbäck, Nils
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Y-peel Characterization of Adhessively-bonded Carton Board an objective Method2007In: Journal of Adhesion Science and Technology 21 2007 (2) 197-210Article in journal (Refereed)
  • 370. Kotik, Nikolai
    et al.
    Lestelius, Magnus
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Shestopalov, Youri
    Modelling and Simulation of the Printing Plate-Contact System2006Conference paper (Refereed)
  • 371. Kotik, Ouliana
    et al.
    Ljungqvist, Carl-Henrik
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Effect of the strain to failure distribution of pulp fibres on tensile strength of paper2005In: Appita J., 58(4) pp. 288 –292 (2005)Article in journal (Refereed)
  • 372. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Modeling offibre bridging in delamination of board2004Conference paper (Refereed)
  • 373. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Simulation of Paper Failure ' a Micromechanical Model for Localization of the Fracture Process Zone2005In: Appita J., 58(6) pp. 459–461, 469 (2005)Article in journal (Refereed)
  • 374. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Strain to failure properties of pulp and the influence on the mechanical behaviour of paper2002Other (Other (popular science, discussion, etc.))
  • 375. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ljungqvist, Carl-Henrik
    The strain to failure properties of pulp fibres and its influence on the fracture zone - michromechanical approach2003Other (Other (popular science, discussion, etc.))
  • 376.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Effect of microstructure on edge wear mechanisms in WC-Co, WOM 20072007Conference paper (Refereed)
  • 377.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Isothermal grain growth in mechanically alloyed nanostructured Fe80Ti8B12 alloy2003In: Materials Letters, ISSN ISSN: 0167-577X, Vol. 57, no 22/23, p. 3671-3675Article in journal (Refereed)
    Abstract [en]

    Isothermalgraingrowth in a mechanicallyalloyednanostructured Fe80Ti8B12alloy was investigated at 915–985 K by TEM and XRD methods. Crystallization of the amorphous phase and grain coarsening stages were observed, and each stage was analyzed using models of a graingrowth with dragging of grain boundaries and of normal graingrowth, respectively. Activation energies were calculated to be 300±10 and 280±10 kJ/mol using the models.

  • 378.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    On the abrasion of ultrafine WC-Co by fine abrasive particles2007In: Transactions of Nonferrous Metals Society of China, ISSN 1003-6326, E-ISSN 2210-3384, Vol. 17, no 6, p. 1287-1293Article in journal (Refereed)
  • 379.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    On the abrasion of ultrafine WC-Co hardmetals by small SiC abrasive2008In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 30, no 1, p. 35-39Article in journal (Refereed)
  • 380.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Preparation of Mo(Si,Al)2-ZrO2 nanocomposite powders by mechanical alloying, International Journal of Refractory Metals and Hard Materials, Volume 22, Issues 4-5, July-September 2004, Pages 205-2092004Article in journal (Refereed)
  • 381.
    Krakhmalev, Pavel
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Tool materials and applications, research experience at KaU, Swedish-Egyptian workshop2007In: Swedish-Egyptian Workshop 2007 (representation of Karlstad University), Cairo, Egypt, SMRDI, 14-16 May 2007Article in journal (Other academic)
  • 382.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Bergström, Jens
    Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Hot wear of Mo(Si,Al)2-base composites sliding against an aluminum alloy, NORDTRIB 20042004In: NORDTRIB 2004, Proceeding of the 11-th Nordic Symposium on Tribology: Tromsø, Harstad, Hurtigruten, [Bodø], Norway, June [1 - 5], 2004, Tromsö, 2004, p. 307-317Conference paper (Refereed)
  • 383.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Bergström, Jens
    Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Tribological behavior and wear mechanisms of MoSi2-base composites sliding against AA6063 alloy at elevated temperature2006In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 260, no 4-5, p. 450-457Article in journal (Refereed)
  • 384.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Fredriksson, Gunnel
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics.
    Yadroitsava, Inna
    Yadroitsev, Igor
    In situ heat treatment in selective laser melted martensitic AISI420 stainless steels2015In: Materials & Design, ISSN 0264-1275, Vol. 87, p. 380-385Article in journal (Refereed)
  • 385.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Gåård, Anders
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Bergström, Jens
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Influence of tool steel microstructure on origin of galling initiation and wear mechanisms under dry sliding against a carbon steel sheet, WOM 20072009Conference paper (Refereed)
  • 386.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Rodil, Adeva
    Bergström, Jens
    Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Influence of microstructure on the abrasive edge wear of WC–Co hardmetals2007In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 263, no 1-6, p. 240-245Article in journal (Refereed)
  • 387.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ström, E.
    Li, C.
    Microstructure and properties stability of Al-alloyed MoSi2 matrix composites2004In: Intermetallics (Barking), ISSN 0966-9795, E-ISSN 1879-0216, Vol. 12, no 2, p. 225-233Article in journal (Refereed)
  • 388.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ström, E.
    Sundberg, M.
    Li, C.
    Microstructure, hardness and indentation toughness of C40 Mo(Si,Al)2/ZrO2 composites prepared by SPS of MA powders2003In: Scripta Materialia, ISSN 1359-6462, E-ISSN 1872-8456, Vol. 48, no 6, p. 725-729Article in journal (Refereed)
  • 389.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ström, E.
    Sundberg, M.
    Li, C.
    Microstructure, hardness and indentation toughness of high-temperature C40 Mo(Si,Al)2/SiC composites prepared by SPS of MA powders2003In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 57, no 22-23, p. 3387-3391Article in journal (Refereed)
  • 390.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ström, E.
    Sundberg, M.
    Li, C.
    Processing, microstructure and properties of C40 Mo(Si,Al)2/Al2O3 composites, Materials Science and Engineering A, Volume 360, Issues 1-2, Pages 207-213, 20032003Article in journal (Refereed)
  • 391.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Sukumaran, J.
    Gåård, Anders
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Effect of microstructure on edge wear mechanisms in WC-Co2007In: International Journal of Refractory Metals and Hard Materials, ISSN 0958-0611, Vol. 25, no 2, p. 171-178Article in journal (Refereed)
    Abstract [en]

    Edge wear of nano to coarse WC–Co grades was investigated under two-body abrasion conditions using SiC abrasive at 2 and 15 N loads. With the fine abrasive utilized, a transition from homogeneous plowing in submicron grades to inhomogeneous grains pullout in coarse hardmetals was observed at the beginning stages. At final stages, plowing was detected in all the grades. When using the coarse abrasive, for all grades, flaking at the beginning and plowing at the final stages occurred. The performed numerical finite element simulation of the microstructural mechanical response showed good agreement to experimental results and was discussed in relation to the operative wear mechanisms observed. The found results demonstrated a remarkable influence of microstructure and abrasive size on the heterogeneous to homogeneous wear mechanisms transition at initial stages

  • 392.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Sukumaran, J.
    Gåård, Anders
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    How hardmetals react to wear: Nano is not always the best2007In: Metal Powder Report, ISSN 0026-0657, E-ISSN 1873-4065, Vol. 62, no 2, p. 30-35Article in journal (Refereed)
  • 393.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Yadroitsev, I.
    Univ Lyon, Ecole Natl Ingn St Etienne ENISE, DIPI Lab, F-42023 St Etienne, France..
    Microstructure and properties of intermetallic composite coatings fabricated by selective laser melting of Ti-SiC powder mixtures2014In: Intermetallics (Barking), ISSN 0966-9795, E-ISSN 1879-0216, Vol. 46, p. 147-155Article in journal (Refereed)
    Abstract [en]

    Transition metal silicides and carbides are attractive advanced materials possessing unique combinations of physical and mechanical properties. However, conventional synthesis of bulk intermetallics is a challenging task because of their high melting point. In the present research, titanium carbides and silicides composites were fabricated on the titanium substrate by a selective laser melting (SLM) of Ti -(20,30,40 wt.%)SiC powder mixtures by an Ytterbium fiber laser with 1.075 mu m wavelength, operating at 50 W power, with the laser scanning speed of 120 mm/s. Phase analysis of the fabricated coatings showed that the initial powders remelted and new multiphase structures containing TiCx, Ti5Si3C5, TiSi2 and SIC phases in situ formed. Investigation of the microstructure revealed two main types of inhomogeneities in the composites, (i) SiC particles at the interlayer interfaces and, (ii) chemical segregation of the elements in the central areas of the tracks. It was suggested and experimentally proven that an increase in laser power to 80 W was an efficient way to improve the laser penetration depth and the mass transport in the liquid phase, and therefore, to fabricate more homogeneous composite. The SLM Ti (20,30,40 wt.%)SiC composites demonstrated high hardness (11-17 GPa) and high abrasive wear resistance (3.99 x 10(-7)-9.51 x 10(-7) g/Nm) properties, promising for the applications involving abrasive wear. (C) 2013 Elsevier Ltd. All rights reserved.

  • 394.
    Krakhmalev, Pavel
    et al.
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Yi, D.
    Nyborg, L.
    Preparation of nanocrystalline/amorphous structure in soft magnetic Fe-based alloys by mechanical alloying, 22nd Risoe International Symposium on Materials Science2001Conference paper (Refereed)
  • 395. Krishnamurthy, S.
    et al.
    Montalti, M.
    Wardle, M.G.
    Shaw, M.J.
    Briddon, P.R.
    Svensson, Krister
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Hunt, M.R.C.
    Siller, L.
    Nitrogen ion irradiation of Au(110): Photoemission spectroscopy and possible crystal structures of gold nitride2004In: Physical Review BArticle in journal (Refereed)
  • 396. Larsson, Linda
    et al.
    Sjödahl, L.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Microscopic 3-D Displacement Field Measurements using Digital Speckle Photography2004In: Optics and Lasers in Engineering, 41, 767-777 (2004)Article in journal (Refereed)
    Abstract [en]

    A technique to measure object shape and 3-D displacement fields in micro-scale is offered by microscopic stereo digital speckle photography. The displacement of the random features that are often present on many engineering surfaces when viewed in a microscope is measured with the system, using image correlation. In this paper the equipment, physical model and calibration routines are described. The technique can be applied for sub-mm sized objects of arbitrary shape for small deformation fields. As a verifying experiment, an in-plane rotation of a flat calibration plate is presented. The expected in-plane errors are shown to be less than 0.1 ?m and the corresponding out-of-plane errors about three times larger. As a pilot experiment, micro-structural paper expansion is studied, when exposed to humidity. The scaling properties of the microscope as well as the sampling criteria and reliability of the system are discussed in detail

  • 397.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Engquist, I.
    Tengvall, P.
    Chaudhury, M. K.
    Liedberg, B.
    Order/Disorder Gradients of n-Alkanethiols on Gold1999In: Colloids and Surfaces B: Biointerfaces, Vol. vol 15, p. 57-70Article in journal (Refereed)
  • 398.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Montibon, Elson
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Preparation of Electroconductive Paper by Deposition of Conducting Polymers2010Conference paper (Other (popular science, discussion, etc.))
  • 399.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Liedberg, B.
    Lundström, I.
    Tengvall, P.
    In Vitro Plasma Protein Adsorption and Kallikrein Formation on 3-Mercaptopropionic Acid, L-Cysteine and Glutathione Immobilized onto Gold1994In: Journal of Biomedical Materials Research, Vol. vol 28, p. 871-880Article in journal (Refereed)
  • 400.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Liedberg, B.
    Tengvall, P.
    In Vitro Plasma Protein Adsorption on -Functionalized Alkanethiolate Self-Assembled Monolayers1997In: Langmuir, Vol. vol 13, p. 5900-5908Article in journal (Refereed)
567891011 351 - 400 of 634
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