WC-Co
Segregation of Dopants at WC/Co and WC/WC Interfaces in Solid State Sintered WC VC Cr3C2 Co Cemented Carbides
... the Co binder phase and allow the WC grains to be observed more ...the WC / Co and WC / WC interfaces was examined using a SIGMA-type EDS (Kevex ...
7
Erosion Resistance of High Velocity Oxy-Fuel WC-Co-Cr Thermal Spray Coatings
... contains WC of 5 – 7 μm and seem to have less size variation compared to cast and crushed powders [10] & ...fine WC particles from 3-5 μm [8] to 1-2 μm ...dense WC-Co coating with large ...
182
WC-Co COATINGS AND SINTERS MODIFIED WITH NANO-SIZED TiC MICROSTRUCTURE – QUANTITATIVE EVALUATION
... of WC-Co + TiC sinters than thermal sprayed coatings ...for WC- Co+3wt.% TiC sinter (2076 HV 0.1 ) and the low- est for WC-Co + ...
12
Erosion Wear Mathematical Model for WC-Co Reinforcement Hardness Distribution in Fe-Based Alloy Matrix With Evoluted Algorithms Francisco Casesnoves MSc MD
... The mathematical model for abrasive erosion of Fe- based alloy with WC-Co reinforcement was developed in improved algorithms, computational software and simulations. Results can be considered acceptable ...
9
Establishing Empirical Relationships to Estimate Porosity & Hardness of HVOF Sprayed WC-Co-Cr Coatings
... The WC- Co-Cr factorial experimental design, 8 center points and 8 star powder was directly sprayed on to the grit-blasted substrate points was used Table ...sprayed WC-CrC-Ni coatings can be ...
14
Application of design of experiment technique in the nickel-chromium electroplating process on WC-Co substrate prior HFCVD diamond coating
... of WC-Co by reducing the tools downtime; increasing the cutting productivity and improving the quality of the machined surface are becoming more and more attractive (Polini and Barletta, ...a ...
24
Growth Inhibition of Nano WC particles in WC Co Alloys during Liquid Phase Sintering
... inhibits WC growth by segregating around the WC ...with WC and Co, occurs during cooling when the solubility of VC decreases in the Co ...of WC is known to occur during the ...
7
A note on threshold velocity criteria for modelling the solid particle erosion of WC/Co MMCs
... 10-11, is similar to that obtained in the literature for low impact energy erosion events on composites [2-4]. For velocities of 30- 60 ms -1 , Figures 12-14, the threshold conditions for both erosion of reinforcement ...
25
Influence of Carbon Content of WC Co Electrode Materials on the Wear Resistance of Electrospark Coatings
... One of the advantages of hard alloy coatings is their high wear resistance [15-17] and therefore this characteristic was determined for the obtained electrospark coatings deposited during 5 min at a frequency of 100 Hz. ...
6
Effect of Graphene and Carbon Nanotubes on the Thermal Conductivity of WC-Co Cemented Carbide
... between WC and Co and reduce the thermal ...in WC-Co cemented carbide, the more WC grain boundaries there were, the worse the thermal conductivity, so the interface is one of the main ...
12
Microstructure and Properties Characterization of WC Co Cr Thermal Spray Coatings
... of WC-Co-Cr coatings using a more economical thermal spray ...of WC- Co-Cr coatings was ...that WC particles undergo considerable degree of decarburization and dissolution during ...
16
Effect of Cryomilling on Particle Size and Microstrain in a WC Co Alloy
... Among the various methods, the Scherrer equation is the most commonly used for the measurement of crystalline size. However, it has limited applications when high strain develops during the powder synthesis. In addition, ...
6
Electrospark Coatings Based on WC Co Alloys with Aluminium Oxide and Carbon Additives
... tured WC-Co electrode onto an Armco iron were found to exhibit a uniform amorphous structure, higher wear re- sistance, and reduced friction coefficient as compared to those deposited with conventional ...
5
HVOF Sprayed Coating's (WC-Co Ni Cr Si ) to Conduct the Erosion Test
... High velocity oxy-fuel thermal spraying with oxygen and liquid petroleum gas as fuel gases has been used successfully to deposit WC Co-NiCrSi alloy coatings on boiler tube steels. LPG fuel gaze is cheap ...
7
A practical methodology to select fretting palliatives: Application to shot peening, hard chromium and WC-Co coatings
... the WC-Co coating characterized by slightly lower friction behaviour displays very good cracking performance and presents very low and homogeneous wear ...spray WC-Co coating against fretting ...
24
Corrosion behavior of WC Co cermet coatings
... In cermet coatings as in tungsten carbide-cobalt (WC-Co) with both ceramic and metal present, these can have very different potentials. This results in micro-galvanic corrosion as discussed by Cho et al. ...
5
Effect of the Composition and the Thermal Treatment on Corrosion Resistance of WC-Co-Al2O3 Ceramic Coatings
... suggesting their possibility of replacement for toxic hard chrome coating. Ceramic coatings produced by the electrospark deposition (ESD) technique are used for a broad range of industrial applications. As a result of ...
21
Nanotoxicity: emerging concerns regarding nanomaterial safety and occupational hard metal (WC-Co) nanoparticle exposure
... of WC-Co dust is known to cause “hard metal lung disease” and an increased risk of lung cancer; however, the mechanisms underlying WC-Co toxicity, the inflammatory disease state and ...
13
Lifetime in Steel Cord Wire Drawing Dies of WC Co Cemented Carbide Containing TaNbC or Cr3C2
... the WC/Co interface on cooling and lowering the pressure, possibly reducing the holding power of the WC ...the WC/ Co interface was released outside the material, increasing the holding ...
6
Corrosion behavior of WC Co and WC Ni in 3 5% NaCl at increasing temperature
... The definition of a cermets material is the combination of a metal to a nonmetal, which is ceramic (cer) and metallic (met) materials [1]. It is the addition of the metallic binder such as cobalt (Co) or nickel ...
5