Microstructure and mechanical properties of a Pt–Rh alloy produced by powder metallurgy and subjected to plastic working

The paper presents the results of investigations of the Pt–Rh8 wires produced by powder metallurgy. The powder was consolidated by isostatic pressing followed by sintering. Examinations of the microstructure and the microhardness of the wires thus obtained showed that this treatment yields solid wires characterized by fine-grained microstructure and low porosity. The wires have better mechanical properties than those produced by plastic treatment of moulded alloys.