Effect of Heat Treatment on the Phase Composition of Copper-Zinc Coating on Steels

被引：0
|
作者：
Arkhipov, V. E. [1 ,2 ]
Murav'eva, T. I. [1 ,2 ]
Moskvitin, G. V. [1 ,2 ]
Pugachev, M. S. [1 ,2 ]
Shcherbakova, O. O. [1 ,2 ]
机构：
[1] Russian Acad Sci, AA Blagonravov Inst Mech Engn, Moscow, Russia
[2] Russian Acad Sci, A Yu Ishlinskii Inst Problems Mech, Moscow, Russia
来源：
METAL SCIENCE AND HEAT TREATMENT | 2023年 / 65卷 / 7-8期
关键词：
copper-zinc coatings; duplex brass; electron-type solid solution; diffusion; gas-dynamic spraying;
D O I：
10.1007/s11041-023-00945-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The structure of a copper-zinc coating deposited onto steel 40Kh at 450 degrees C by the method of gas-dynamic spraying of a mechanical mixture of copper, zinc and corundum particles with 2-mm displacement of the sprayer nozzle is studied. The coated specimens are heat treated in a furnace at 420 - 430 degrees C for at most 180 min. The structure and the chemical composition of the coating are studied by the methods of x-ray diffraction phase analysis and microscopic spectrum analysis. It is shown that the spraying is accompanied by diffusion of copper into zinc, which yields an electron-type solid solution based on Cu5Zn8 (a gamma-phase). After the heat treatment at 420 - 430 degrees C for 180 min the coating contains a solid solution of zinc in copper (an alpha-phase) and an electron-type solid solution based on CuZn (a gamma '-phase). The chemical and phase compositions of the coating correspond to duplex brass L65.
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页码：470 / 473
页数：4
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