CeO_2对等离子喷涂Cr_2O_3涂层组织和滑动磨损性能的影响  

EFFECT OF CeO_2 ON MICROSTRUCTURE AND SLIDING WEAR PROPERTIES OF Cr_2O_3 CERAMIC COATING WITH PLASMA SPRAYING METHOD

作　　者：王引真[1] 孙永兴[1] 何艳玲[1] 宋玉强[1] 曹文军[1] 

机构地区：[1]石油大学机电工程学院,山东东营257061

出　　处：《石油大学学报（自然科学版）》2002年第5期65-67,70,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：石油大学基础研究基金 (ZX9911);博士基金资助项目

摘　　要：通过在Cr2 O3 材料中加入不同含量的CeO2 添加剂 ,探讨了稀土对等离子喷涂Cr2 O3 涂层组织、抗拉结合强度和滑动磨损性能的影响。研究结果表明 ,添加适量CeO2 可以提高Cr2 O3 涂层的致密性、抗拉结合强度和耐磨性。在滑动磨损条件下 ,Cr2 O3 涂层的磨损为疲劳磨损 ,CeO2 的加入不会改变涂层的磨损失效机制。涂层的耐磨性与涂层的抗拉结合强度成正比。The additive CeO 2 with different contents was added into Cr 2O 3 to investigate the effects of rare earth on the microstructure, intensive strength, adhesive and sliding wear properties of the Cr 2O 3 ceramic coating. It is found that adding a suitable amount of CeO 2 into the Cr 2O 3 powder not only can modify the microstructure but also improve the bond and wear resistance of the Cr 2O 3 coating. The failured Cr 2O 3 coating mainly suffered the fatigue under a condition of the sliding worn. Adding CeO 2 into the Cr 2O 3 layer did not change the failure mechanism. The wear resistance of coating is directly proportional to the intensive and adhesive strengths of the coating.

关 键 词：CEO2 等离子喷涂 涂层组织 滑动磨损性能 影响 二氧化铈 三氧化铬 陶瓷涂层 稀土 抗拉结合强度 

分 类 号：TG174.442[金属学及工艺—金属表面处理]