Precious metal alloys for high-temperature resistance strain gauges

Publisher Website
Google Scholar
Abstract
Much work has been carried out over the years in an attempt to develop a gauge for the measurement of steady strains up to 1000°C. As a result satisfactory elements exist for use up to 300°C; over the range 300-1000°C alloys of Pt and W were shown to be suitable in 1963. Since that date a number of discrepancies have come to light.The present paper reviews earlier work on precious metals and their alloys and examines in detail the behaviour of some platinum metals and alloys exposed to oxidizing atmospheres for extended periods of time. Preliminary work aimed at obtaining more satisfactory alloys for use at extreme temperatures is outlined.It is concluded that the apparently anomalous behaviour of some samples of Pt-W is associated with the metallurgical state of the alloy. On the basis of preliminary test results an alloy of Pt, Pd and Mo is shown to be superior to Pt-W for steady strain element manufacture.
Keywords

This publication has 7 references indexed in Scilit: