Influence of Heat Treatment on Microstructure and Sliding Wear Behavior of Fe-Al/WC Composite Coatings

被引：0
作者：
朱子新
杜则裕
徐滨士
马世宁
张伟
机构：
[1] School of Materials Science and Engineering, Tianjin University,School of Materials Science and Engineering, Tianjin University,State Key Laboratory of Remanufacture Technology, Armored Force Engineering Institute,State Key Laboratory of Remanufacture Tech
[2] State Key Laboratory of Remanufacture Technology, Armored Force Engineering InstituteBeijing 100072,China ,Tianjin 300072, China ,Beijing 100072,China ,Beijing 100072,China ,Beijing 100072,China
来源：
Transactions of Tianjin University | 2003年 / 02期
关键词：
high velocity arc spraying; composite coating; iron aluminide intermetallics; WC; heat treatment; microstructure; sliding wear behavior;
D O I：
暂无
中图分类号：
TG174.44 [金属复层保护];
学科分类号：
080503 ;
摘要：
An experimental study has been carried out to investigate the influence of heat treatment at 300 ℃,450 ℃,550 ℃,650 ℃ and 800 ℃ on the microstructure and sliding wear behavior of Fe Al/WC intermetallic composite coatings produced by high velocity arc spraying (HVAS) and cored wires. The result shows, the main phases in both as sprayed and heat treated Fe Al/WC composite coatings are iron aluminide intermetallics (Fe 3Al+FeAl) and α as well as a little oxide (Al 2O 3) and carbides (WC, W 2C, Fe 2W 2C and Fe 6W 6C). After heat treated at 450-650 ℃, dispersion strengthening of Fe 2W 2C and Fe 6W 6C will lead to a rise in microhardness of the coatings. The microhardness is likely to be the most important factor which influences the sliding wear behavior of the coatings. Increasing the microhardness through heat treatment will improve the sliding wear resistance of the Fe Al/WC composite coatings.
引用
收藏
页码：93 / 97
页数：5
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