Rare earth effect on the microstructure and tribological properties of FeNiCr coatings

作     者：LIANG Bunu ZHANG Zhenyu WANG Zhiping CHEN Baiming 

作者机构：Mechanical Engineering Department Lanzhou Polytechnical College Lanzhou 730050 China State Key Laboratory of New Nonferrous Metal Materials Lanzhou University of Technology Lanzhou 730050 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2010年第29卷第3期

页      面：270-275页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 

基　　金：supported by the Natural Science Foundation of Gansu Province  China (No. 0710RJZA071) 

主　　题：coatings rare earth oxides thermal spray microstructure tribological property 

摘      要：FeNiCr alloys with various amounts of La2O3 powders were thermally sprayed onto steel *** probe microscopy analysis （EPMA）,X-ray photoelectron spectroscopy （XPS）,and an Optimol SRV oscillating friction and wear tester in a ball-on-disc contact configuration were employed to investigate the properties of the sprayed *** results show that rare earth can refine the microstructure effectively and make the element distribution uniform,which leads to the improvement in the properties of the ***,the wear rate of the FeNiCr alloy with 1.5% La2O3 is smaller than those of the other ***,the rare earth can reduce the friction coefficient and act as a self-lubricant in the oxide debris layer formed on the worn surface in *** wear mechanism of the coatings is oxidation wear,and a large amount of counterpart material is transferred to the coatings.