摘要
以添加少量氧化镧的团聚纳米Al2O3-13%TiO2粉末为原料,利用等离子喷涂技术制备纳米陶瓷涂层,在MMS-1G型高速摩擦磨损试验机上考察其摩擦磨损性能,并利用扫描电镜和能谱仪表征其磨损表面。结果表明:添加1%氧化镧的涂层具有更低的孔隙率,更高的抗拉结合强度;在高速摩擦磨损试验过程中,氧化镧可起到降低摩擦因数及磨损率的作用,添加1%氧化镧的纳米涂层摩擦磨损性能优良。磨损是由涂层微裂纹扩展导致的涂层剥落引起的,黏着磨损显著。
The nano-ceramic coating was prepared by plasma spraying of nano Al2O3-13TiO2 powders with a small amount of La203. The friction properties were tested on the MMS-1 G high-speed friction and wear tester, and the morpholo- gy after wear was observed by scanning electron microscopy. The results show that the coatings with 1% La2 03 have a lower porosity, and a higher adhesive strength. During the high-speed friction and wear test, lanthanum oxide can reduce the fric- tion coefficient and wear rate, and the nano coatings with 1% La203 have excellent friction and wear properties. Wear is caused by coating spalling due to micro-crack expanding, the characteristic of adhesive wear is outstanding. Keywords： plasma spraying; nano coating; friction coefficient; wear rate
出处
《润滑与密封》
CAS
CSCD
北大核心
2013年第8期36-40,共5页
Lubrication Engineering
基金
国家自然科学基金项目(U1034002)
河南省教育厅自然科学研究项目(2011A430012)
关键词
等离子喷涂
纳米涂层
摩擦因数
磨损率
plasma spraying
nano coating
friction coefficient
wear rate
