Sökning: "WC-Co"

Visar resultat 1 - 5 av 24 uppsatser innehållade ordet WC-Co.

1. 1. Effect of temperature on early stage adhesion during TiAlN sliding against Inconel 718 and Stainless steel 316L : High temperature tribology

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Ahsan Ali; [2023]
   Nyckelord :High temperature tribology; Early-stage adhesion; Adhesive wear; Friction; Wear resistant coatings; Physical vapour deposition PVD coatings; TiAlN; Tungsten carbide WC Co ; Difficult to machine super alloys; Inconel 718; Stainless steel 316L; High-performance materials; Abrasion; Oxidation; Chipping; Ploughing; Characterization;

   Sammanfattning : High-performance materials such as stainless steels and nickel based super alloys are widely used in demanding applications where high mechanical and thermal properties are required. The applications of super alloys are mainly found in jet engines, power plants and gas turbines demanding high fatigue strength, corrosion and oxidation resistance as well as wear resistant properties. LÄS MER

3. 2. Evaluation of Refined Tribological Properties of Diamond Coated Cutting Tools Used in Machining of High-Strength Aluminum Alloys : Master thesis report regarding refined frictional & wear behavior of uncoated & CVD diamond coated WC-Co cemented carbide cutting tools used for machining of Al 7xxx alloys.

   Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :Christian Hultman; [2022]
   Nyckelord :tribology; machining; metal cutting; turning; milling; friction; wear; material transfer; surface technology; tribologi; skärande bearbetning; svarvning; fräsning; friktion; förslitning; nötning; materialöverföring; ytteknologi;

   Sammanfattning : High strength aluminum alloys have for a long time been a popular material utilized in the automotive and aerospace sector due to coveted mechanical properties in terms of weight, strength, fatigue, and corrosion. However, tribological mechanisms such as tribo-film formation and material transfer during the metal cutting manufacturing process of aluminum impose significant reduction of machining and tool-life performance. LÄS MER

4. 3. 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

5. 4. 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

7. 5. 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