灰铸铁表面原位合成TiC/Al3Ti复合涂层的组织及耐磨性

中国机械工程 ›› 2013, Vol. 24 ›› Issue (16): 2253-2256.

灰铸铁表面原位合成TiC/Al3Ti复合涂层的组织及耐磨性

阮鸿雁1;沈琪1;宋振达2

1.江苏大学,镇江,212031
2.江苏金华厦电气有限公司,镇江,212200

出版日期:2013-08-25 发布日期:2013-08-23

Microstructure and Wear Resistance of In-situ Synthesis of TiC/Al3Ti Composite Coating of Gray Cast Iron

Ruan Hongyan1;Shen Qi1;Song Zhenda2

1.Jiangsu University,Zhenjiang,Jiangsu,212031
2.Jiangsu Jin Huasha Electric Limited Company,Zhenjiang,Jiangsu,212200

Online:2013-08-25 Published:2013-08-23

摘要/Abstract

摘要：

采用铸造反应合成技术在灰铸铁表面原位合成TiC/Al3Ti复合涂层材料,对复合涂层的显微组织、硬度和耐磨性进行了研究。结果表明:Al-Ti-C体系完全反应后可制备出纯净的TiC/Al3Ti表面复合涂层材料,该表面复合材料组织致密,并随着涂层中TiC含量的增加,材料的硬度有所提高,表面复合涂层的硬度明显高于铁基体的硬度,磨损性能也要优于铁基体,明显改善了铸铁的表面硬度和摩擦性能。
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关键词: 复合涂层, TiC/Al3Ti, 组织结构, 耐磨性能

Abstract:

A TiC/Al3Ti composite coating on the gray cast iron was fabricated by the reaction
synthesis in melt.The microstructure,interface,micro-hardness and wear resistance were investigated.
The results show that the composite is formed on gray cast iron compactly with a metallurgical bonding interface.TiC presented a strip form as the content of TiC is 20%;with increase of TiC,its shape changes from the strip form to a granular form with decreased size.The hardness of the coating are substantially higher than that of the iron matrix and slightly increases with increasing TiC content.It is found that the composite coatings are more effective in improving wear resistance,greatly enhanced the
surface hardness and the wearing resistance of the gray cast iron.

Key words: composite coating, TiC/Al3Ti, microstructure, wear resistance

中图分类号:

TB331

阮鸿雁1, 沈琪1, 宋振达2. 灰铸铁表面原位合成TiC/Al3Ti复合涂层的组织及耐磨性[J]. 中国机械工程, 2013, 24(16): 2253-2256.

RUAN Hong-Yan-1, CHEN Qi-1, SONG Zhen-Da-2. Microstructure and Wear Resistance of In-situ Synthesis of TiC/Al3Ti Composite Coating of Gray Cast Iron[J]. China Mechanical Engineering, 2013, 24(16): 2253-2256.

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