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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 5    No. 4    December 1995

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MICROSTRUCTURE CHANGE OF LASER SURFACE REMELTING WC-Co COATING
Guo Jingjie1; Li Bangseng1; Zhao Jiuzhou1; Jia Jun1; Li Qingchun1; Wu Weimin2; Isao Miki2; Hideki Ishi2

1.Schcol of Materials Science and Engineering; Harbin Institute of Technology; Harbin 150001;
2.Harbin Coal Mine Machinery Institute Nikkei Techno-Research Company; Ltd; Japa

Abstract:Microstructure change of laser surface remelting WC-Co coating has been studied in detail by optical microscope and SEM.The results demonstrate that with increasing laser power and scan time,microstructure change order is as follows:WC particles+Co+gasholes→WC particles+Co→WC particles+Co+dendrites→eutectic structure.

 

Key words: WC-Co laser surface remelting microstructures

ISSN 1672-7029
CN 43-1423/U

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