Methodological features of studying the density of metal powder compositions at high temperature

Shorstov S.Yu., Dmitriev N.S., Razmakhov M.G., Skuridina N.S.
Shorstov S.Yu., Dmitriev N.S., Razmakhov M.G., Skuridina N.S. Methodological features of studying the density of metal powder compositions at high temperature // Proceedings of VIAM. 2024. No. 8. DOI: 10.18577/2307-6046-2024-0-8-111-120. URL: https://test.viam.ru/en/journal/2024/8/10
Keywords
metal powder compositions, granulometric composition, heat-resistant nickel alloys, centrifugal spraying of cast blanks, temperature coefficient of linear expansion, thermophysical properties, bulk density, true density
Abstract

This paper proposes an approach to estimating the density of solid materials at elevated temperatures, based on measuring the temperature coefficient of linear expansion. Measurements of metal powder compositions of alloys EP741NP, VZh178P and VZh159 were carried out. The temperature dependences of the density of the powders under study were established in the temperature range from 200 to 1100 ºС and the correctness of the results obtained was assessed. The features of the experiment are shown, and the advantages and disadvantages of the proposed measurement method are considered.

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