EVALUATION OF HEAT RESISTANCE AND THERMAL CONDUCTIVITY OF Ni-Cr-Al SYSTEM LAYERED COATINGS

被引：0
|
作者：
Shmorgun, V. G. [1 ]
Bogdanov, A. I.
Taube, A. O. [1 ]
Kulevich, V. P.
机构：
[1] Volgograd State Tech Univ, Volgograd, Russia
来源：
METALLURGIST | 2022年 / 66卷 / 7-8期
基金：
俄罗斯科学基金会;
关键词：
explosion welding; heat treatment; protective coating; nickel aluminides; heat resistance; thermal conductivity; finite element simulation;
D O I：
10.1007/s11015-022-01405-z
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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 & DEG;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.
引用
收藏
页码：934 / 941
页数：8
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