The pressure and temperature dependence of the electrical resistance of the alloy Au+2.1% Cr have been measured. After low temperature heat treatment, the resistance of this alloy passes through a minimum as a function of temperature. As pressure is increased, the temperature at which the resistance minimum occurs becomes progressively higher. Metallographic study shows that a necessary condition for the occurrence of this resistance minimum is the formation of a finely dispersed second phase. As a material for electrical resistance pressure gauges, the gold-chromium alloy is characterized by low temperature sensitivity, absence of shift of the zero-pressure resistance, and nearly linear and reasonably large pressure response. However, it also displays hysteresis during pressure cycling and a tendency for the pressure calibration to drift.
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Davis et al. (1967) studied this question.
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