摘要
钛合金的硬度低、耐磨性差,严重限制了其作为工作部件在摩擦工况下的服役寿命。采用激光熔覆技术在钛合金表面制备耐磨和自润滑涂层可大幅提高钛合金的耐磨性。首先综述了激光熔覆工艺(激光功率、扫描速度、光斑直径、比能量、后热处理、高频振动等)对涂层耐磨性的影响规律;其次,探讨了不同类型硬质相、基体相、自润滑相的特征及其对涂层耐磨性的影响规律;最后,对采用激光熔覆技术在钛合金表面制备的耐磨自润滑涂层进行了总结和展望。
The low hardness and poor wear resistance of titanium alloy severely restrict its service life under friction conditions. Wear-resistant and self-lubricating coatings prepared on titanium alloy surface by laser cladding technology can greatly improve its wear resistance. In this paper, firstly, the influences of laser cladding technology(laser power, scanning velocity, spot diameter, specific energy, post-heat treatment, high frequency vibration, etc.) on the wear resistance of the coatings were reviewed. And then, the characteristics of different types of hard phases, matrix phases and self-lubricating phases as well as their influences on the wear resistance of the coatings were discussed. Finally, the wear-resistant and self-lubricating coatings prepared on the surface of titanium alloy by laser cladding were summarized and prospected.
作者
孙壮
王伟
王成
丁士杰
高原
王快社
SUN Zhuang;WANG Wei;WANG Cheng;DING Shi-jie;GAO Yuan;WANG Kuai-she(School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)
出处
《材料保护》
CAS
CSCD
2023年第1期107-120,共14页
Materials Protection
关键词
激光熔覆
钛合金
耐磨涂层
自润滑涂层
陶瓷粉末
laser cladding
titanium alloy
wear-resistant coating
self-lubricating coating
ceramic powder
