Вимірювальна техніка та метрологія

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Electrical properties of Ti-Cu-Co-Si high-entropy alloy
(Видавництво Львівської політехніки, 2022-02-28) Yatsyshyn, Svyatoslav; Skoropad, Pylyp; Karpinski, Mikolaj; Lviv Polytechnic National University
To study the metrological characteristics, there were studied manufactured based on the Ti-Cu-Co-Si alloy, obtained by quenching from the melt, the sensitive element of the resistance thermotransducer. The instability of its metrological characteristics as a function of temperature up to 350 oC and operation time up to 3000 hours was investigated; it does not exceed 0.025 % under the worst operating conditions. In addition, the methodological error of measurement caused by heating of the sensitive element by the measuring current was examined. It was shown that the recorded changes in electrical resistance were outside the value of the methodological error. They may be due to the presence of nanostructured fields of mechanical stresses and the formation of nanoprecipitates as a consequence of manufacturing.