Erosion wear of silver-nickel contact surfaces in low-voltage apparatus

As an example, Fig. 2 shows the effect of chemical heterogeneity on the mechanical properties of a P/M vanadium alloy and sintered NI4K7MST2 steel.* With increasing heterogeneity the mechanical properties of the materials deteriorate, because at small degrees of heterogeneity the solid solution of such a material is still fairly evenly alloyed, but as the degree of heterogeneity grows, a sintered material begins to resemble more and more a mechanical mixture of components. The data of Fig. 2 were obtained wuth a modified MAR-2 electron probe microanalyzer, in which the operations of specimen movement and data recording on perforated tape are performed automatically.