摘要
介绍了超音速等离子喷涂层在服役过程中常见的4种疲劳失效形式(表面磨损、点蚀、分层和剥落)及其发生的机理。综述了涂层结构完整性对疲劳失效的影响,即粗糙度、孔隙率和微裂纹对疲劳失效的作用机制。总结了不同的服役条件(接触应力、润滑状态)对疲劳磨损失效的影响规律,展望了接触疲劳失效机制的研究方向,指出应从涂层内部结构和服役条件来揭示疲劳损伤机理。
Four fatigue failure common forms of the supersonic plasma spray coating （ surface abrasion, pitting, delamination and spalling） during the service were described, and the mechanism of each failure mode was pointed out. Then effects of the structural integrity, such as roughness, porosity and micro-cracks of coating on the fatigue failure mechanism were summarized. The different service conditions （ contact stress, lubrication） influencing fatigue wear failure were also concluded. Finally, the research direction of fatigue failure mechanisms were also discussed and point out that the mechanism of fatigue damage from the internal structure of the coating and service conditions should be studied further.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第4期174-180,共7页
Heat Treatment of Metals
基金
国家自然科学基金(51275151)
国家重点基础研究发展计划(973计划)(2011CB013405)
国家杰出青年科学基金(51125023)
关键词
超音速等离子喷涂
接触疲劳
结构完整性
supersonic plasma spraying
contact fatigue
structural integrity
作者简介
李楠楠（1989-），男，硕士研究生，主要从事表面工程研究工作，E-mail：lnnhblf@126．com。
通讯作者：李国禄，教授，联系电话：022-60201664．E-mail：liguolu@hebut．edu．cn
