Segregation in Stellite powders produced by the plasma rotating electrode process

Microstructural study of tungsten influence on Co–Cr alloys

“…Generally, surgical implants and dental alloys contain no more than 1% carbon. Consequently, the matrix of these alloys contains several carbide types such as MC, M 7 C 3 , M 23 C and M 6 C [24,27,28]. However, in the alloys for ceramic/metal bond, carbon is a residual element, so this can explain the fact that carbides have not been detected in our alloys.…”

Production of uranium–molybdenum particles by spark-erosion

“…The production of powders of different alloys can be obtained by different methods such as: the plasma rotating process, [11], and the gaseous vaporization already used to obtain U-Mo particles, [12]. These methods have in common with the electrodischarge the fusion of the material and the fast cooling rate of the liquid with the consequence of microsegregation problems.…”

Failure analysis of stellite dies for brass extrusion: The effect of aging

“…4b, present a relatively high chromium content, Table 2. They are probably Co-␥ areas with a fine dispersion of chromium carbide (M 7 C 3 ); this is also supported by the pseudobinary quaternary system Co-Cr-C-W [15,16].…”

“…This usually forms in cobalt alloys with moderate Cr/C ratio [12], as in the present case. The particles of this carbide solidify immediately after the solidification of Co-␥ dendrites in the melt [15,16], so they are coarse and situated between the dendrite arms. The white particles in Fig.…”