Microstructure, Mechanical Properties and Fracture of Pt -Y_2O_3 Composites

摘要

The composite prepared by mechanical alloying of fine Pt powder obtained by waste recovery from linings of glass furnaces with Y_2O_3 dispersed particles (0.5 mass%) has shown better mechanical properties at room temperature as well as at higher temperatures in comparison with those of Pt alloys commercially produced. The qualitative factor, which is known to be a function of starting powders parameters, technology of preparation and compacting operations, shows some correlation particularly with size and space distribution of Y_2O_3 phase in the Pt matrix.