Tensile strength and surface hardness of Pt-Rh alloys at elevated temperatures

Ryuhei TAKADA; Noritaka MARUYAMA; Kuniyasu GEMMA; Yoshihiro MURAGISHI; Yoshikazu TAKAGI; Mikio NISHIHATA

doi:10.2978/jsas.11.91

Ryuhei TAKADA, Noritaka MARUYAMA, Kuniyasu GEMMA, Yoshihiro MURAGISHI, Yoshikazu TAKAGI, Mikio NISHIHATA

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Keywords: Pt alloy, Rhodium, high temperature, mechanical property

JOURNAL FREE ACCESS

1999 Volume 11 Issue 1 Pages 91-92

DOI https://doi.org/10.2978/jsas.11.91

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Abstract

Tensile strength of platinum alloys containing 5-20 mass% Rh were measured in temperature range of 300-873K. Both tensile strength and elongation decreased gradually with increasing temperature. The hardness was also measured using a micro hardness test, which decreased from HV103 at 373K to HV43 at 1273K. At the hardness of HV=50 and at the higher temperature, strongly increased brittleness was observed from the shape of indentation.

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