Friction and surface modifications Single pass scratch contact The

Fig. 4. Micro-Vickers indentations (HV1) in 6Co (a, c) and 15Co (b, d). These 1000 gram indentations involve numerous grains, illuminating that AG-1024 the microhardness is a composite response to the loading. The high magnification micrographs of the central part of the indents (c, d) illustrate the much higher tendency to fracture of individual grains in the 15Co grade. (SEM).Figure optionsDownload full-size imageDownload as PowerPoint slide
Table 2.
Micro-Vickers and nanoindentation hardness values of the two cemented carbide grades.GradeMicro-Vickers hardness HV1Nanoindentation hardness[GPa][kg/mm2]WC [GPa]Co [GPa]6Co16.2 ± 0.31620 ± 3530 ± 3.1–a15Co11.5 ± 0.31150 ± 3027 ± 3.76.0 ± 1.1aThe small Co-volumes made ozone impossible to measure the hardness of the Co-phase without having a significant influence from the surrounding WC-phase.Full-size tableTable optionsView in workspaceDownload as CSV