Microstructure and mechanical properties of nanocrystalline WC-10Co cemented carbides

Dry Reciprocating Sliding Friction and Wear Response of WC–Ni Cemented Carbides

“…Despite competition from pure engineering ceramics, WC cemented carbides are widely employed in tribological applications such as cutting tools [3][4][5], metal forming [6], mining [7], drilling [8] and machining [9,10], and even in the domain of aerospace [11,12]. An expanding trend in the development of these materials is grain size refinement towards nanometric scale and more narrow grain size distributions, which is found to result in higher hardness and improved wear resistance [13][14][15][16][17]. Furthermore, hardness, toughness and strength characteristics can be tuned by adding an adequate amount of metal binder during the liquid-phase sintering process, as mentioned by e.g.…”

Processing and characterization of WC–10Ni/–7Ni–3Cr based yttria stabilized zirconia spark plasma sintered composites

“…The sintering was performed at temperatures within the range of 1250-1450°C for 5 min, at a heating rate of 100-150°C/min with the simultaneous application of a pressure of 50 MPa. The quality of the sintered composites was assessed through density measurements following the Archimedes principle [16]. The sample compositions and corresponding designations are presented in Table 1.…”

Effect of Magnetic Pulsed Compaction (MPC) on Sintering Behavior of Materials

“…Here, the conventional explanation of the sintering mechanism of WC-Co comprises of some of the WC dissolving into the cobalt binder phase, migrating and re-precipitating on the surface of the original WC (Schwartzkopf & Kiefer, 1960). The final product consists of a three-dimensional skeleton of WC grains with cobalt as a binder phase matrix (Silva et al, 2001;Cha et al, 2001). In hard alloys such as WC-Co or TiC, even a slight difference in hardness value with respect to their constituents' content, pressure or grain size can mean a change to their mechanical behavior.…”