Study of thermal conductivity of oxide coating formed on AlSiMg substrate material


Аuthors

Ezhov A. D.1*, Kiselev V. P.2**, Shilov M. S.1, Eremkina M. S.1, Svetlichnaya E. V.2

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. Research Institute of Applied Mechanics and Electrodynamics of Moscow Aviation Institute (RIAME MAI), Moscow, Russia

*e-mail: ezzhov@gmail.com
**e-mail: vladimir-kiselev@yandex.ru

Abstract

This paper describes the experimental setup and data processing methods for studying the thermal conductivity of a ceramic coating based on aluminum oxide grown on an aluminum alloy AlSiMg substrate using the microarc oxidation method. The mathematical model underlying the processing of data obtained during the experiment is described in detail. The model assumptions were considered for their correctness in relation to the accuracy of the result obtained. The topic of contact thermal resistance arising when the sample contacts the elements of the setup is touched upon. The results of the thermal conductivity values of both the oxide coating and the AlSiMg alloy substrate are presented.

Keywords:

alumina ceramics, solid alumina, thermal conductivity, AlSiMg alloy

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