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Metallurgist
Published in: Metallurgist 7-8/2022

30-11-2022

Evaluation of Heat Resistance and Thermal Conductivity of Ni–Cr–Al System Layered Coatings

Authors: V. G. Shmorgun, A. I. Bogdanov, A. O. Taube, V. P. Kulevich

Published in: Metallurgist | Issue 7-8/2022

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Abstract

In this study, calculations and experiments were used to obtain the thermal conductivity equivalent coefficient value of layered (Ni2Al3 + CrAl7)/Cr20Ni80 coatings. The changes in the chemical composition because of the mutual diffusion of components, which determine the coating heat resistance, were analyzed. The simulation of the temperature field distribution over the cross section of the three-layer wall M1–Cr20Ni80–(Ni2Al3 + CrAl7) under conditions of reaching a stationary mode at an ambient temperature of 1600°C was performed using the DEFORM-2D software. The findings demonstrated that layered coatings (Ni2Al3 + CrAl7)/Cr20Ni80 could be considered heat-resistant and thermal barrier coatings. Such coatings provide high rates of high-temperature oxidation protection of copper air tuyeres of blast furnaces with minimal heat losses.
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Metadata
Title
Evaluation of Heat Resistance and Thermal Conductivity of Ni–Cr–Al System Layered Coatings
Authors
V. G. Shmorgun
A. I. Bogdanov
A. O. Taube
V. P. Kulevich
Publication date
30-11-2022
Publisher
Springer US
Published in
Metallurgist / Issue 7-8/2022
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-022-01405-z

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