Sökning: "WC-Co"

Visar resultat 1 - 5 av 22 uppsatser innehållade ordet WC-Co.

  1. 1. Chemical Vapor Deposition of Titanium Oxycarbide

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Carl Henrik Dahmén; [2020]
    Nyckelord :CVD; Hard Coatings; Ti C; O ; CO; Five-ling twinned crystals.; Technology and Engineering;

    Sammanfattning : Ti(C,O) coatings have been generated in a hot wall CVD system on WC/Co, fine and coarse grained Ti(C,N), TiN, Cr and c-BN substrates. The research in this thesis has focused on deposition, characterization, and analysis in the perspective of the bonding layer of a coated insert. LÄS MER

  2. 2. Binder Migration in Double Pressed Drill Bit Inserts

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Axel Bjerke; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : It is possible to produce functionally graded cemented carbides on a large scale by double pressing. Being able to predict the binder migration in WC-Co cemented carbides during the sintering is essential to the design of such cemented carbides. The cobalt content is one of the main factors determining the hardness gradient. LÄS MER

  3. 3. Effect of carbon activity on microstructure evolution in WC-Ni cemented carbides

    Master-uppsats, KTH/Materialvetenskap

    Författare :Olivia Danielsson; [2018]
    Nyckelord :Cemented carbides; Hard metal; WC-Ni; Tungsten carbide; Nickel binder; Grain coarsening; Grain growth; Carbon activity; Size distribution; EBSD; Electron backscattered diffraction;

    Sammanfattning : The aim of this work was to systematically study how the microstructure evolution is affected by the carbon activity in WC-Ni cemented carbides. Seven WC-9.59at%Ni alloys with different carbon activity were sintered at 1500 °C. LÄS MER

  4. 4. Exploratory study of the interactions between textured alumina coatings and steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Jonas Svantesson; [2018]
    Nyckelord :alpha Al2O3; diffusion couple; chemical wear; crater wear; DICTRA;

    Sammanfattning : The crater wear of alumina coated WC-Co cutting tools is thought to be influenced by the chemical reactions between the coating and the workpiece material. Three different crystal orientations ((001), (012), and (100) of alpha alumina CVD coatings are examined in combination with four workpiece materials of steel to establish what reactions are present, and the extent of diffusion. LÄS MER

  5. 5. Mechanical properties of bulk alloys and cemented carbides

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Alexander Engman; [2018]
    Nyckelord :ICME; Cemented carbides; Cobalt;

    Sammanfattning : The usage of cobalt (Co) as binder phase material in cemented carbides has been questioned becauseof the potential health hazards associated with cobalt particle inhalation. Cobalt is used because ofits excellent adhesive and wetting properties, combined with adequate mechanical properties. LÄS MER