含润滑相的超音速喷涂WC复合涂层性能研究

中国民航大学学报 ›› 2013, Vol. 31 ›› Issue (3): 54-57.

含润滑相的超音速喷涂WC复合涂层性能研究

王志平，路鹏程

（中国民航大学天津市民用航空器适航与维修重点实验室，天津300300）

收稿日期:2012-09-01 修回日期:2012-11-06 出版日期:2013-06-23 发布日期:2013-10-08
作者简介:王志平（1963—），男，辽宁朝阳人，教授，博士，研究方向为热喷涂及焊接.
基金资助:
中国民航大学研究生科技创新基金项目（YJSCX12-24）

Study on performance of HVOF WC composite coating with lubrication phase

WANG Zhi-ping,LU Peng-cheng

(Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance,CAUC,Tianjin 300300,China)

Received:2012-09-01 Revised:2012-11-06 Online:2013-06-23 Published:2013-10-08

摘要/Abstract

摘要：

采用超音速火焰喷涂方法,以传统粉末WC-10Co-4Cr 为基体,添加MoS₂制备WC-10Co-4Cr/MoS₂自润滑复合涂层;利用SEM和XRD对比分析了添加不同含量MoS₂的涂层微观组织结构和物相;重点进行了磨粒磨损实验，研究MoS₂对超音速喷涂WC 涂层摩擦学特性的影响机理；测试了其显微硬度。结果表明：引入的MoS₂少部分转化成新态，其余则进入WC 涂层空隙中，其显微硬度与未添加MoS₂涂层相比略有降低；相同试验条件下，含MoS₂涂层有效地降低了磨粒磨损质量损失，提高了涂层的耐磨性；WC-10Co-4Cr/MoS₂复合涂层具有很好的自润滑性，MoS₂质量百分含量为15%时WC-10Co-4Cr/MoS₂复合涂层的摩粒磨损性能最佳。

关键词: HVOF, 磨粒磨损, MoS₂, 复合涂层

Abstract:

By adding MoS₂in WC-10Co-4Cr matrix，the WC-10Co-4Cr/MoS₂ matrix self-lubricating composite coating are prepared by HVOF. The microstructure and material phases of coatings adding different content of MoS₂are analysed comparatively with SEM and XRD. Focusing on the abrasive wear experiments，the mechanism of MoS₂ on the tribological properties of HVOF WC coating and its microhardness are studied and tested respectively. The results show that a small part of the added MoS2 transforms into a new state and the rest of it enters into the WC coating gap，then the coatings microhardness is slightly lower. The abrasive wear mass loss and wear resistance of the coating containing MoS₂ are effectively reduced and improved respectively under the same experimental conditions. WC-10Co-4Cr/MoS₂ composite coating has a good performance of self-lubricating，and the grain friction and wear properties of WC-10Co-4Cr/15wt.% MoS₂ matrix self-lubricating composite coating become the best.

Key words: HVOF, abrasive wear, MoS₂, composite coating

中图分类号:

TG174.442

王志平，路鹏程. 含润滑相的超音速喷涂WC复合涂层性能研究[J]. 中国民航大学学报, 2013, 31(3): 54-57.

WANG Zhi-ping,LU Peng-cheng. Study on performance of HVOF WC composite coating with lubrication phase[J]. , 2013, 31(3): 54-57.