ISSN1000 3762 CN41 1148/TH
轴承2016年10期 Bearing 2016,No. 10
钢球表面制备复合碳基薄膜工艺研究
李振东1.2，刘森3，詹华12，王亦奇1,2，王伟平1,2
(1.中国农业机械化科学研究院，北京100083;2.北京金轮坤天特种机械有限公司，北京100083；
3.中航工业哈尔滨轴承有限公司，哈尔滨150025）
40 44
摘要：通过工装设计和工艺配合，在钢球表面制备非品碳基薄膜，研究薄膜的结构、膜基结合力、摩擦学性能以及钢球表面制备非品碳基薄膜的均匀性、表面粗度、膜层附着性和承载性。结果表明：薄膜由柱状的CrN层和非晶态的碳基薄膜层组成；薄膜与基体之间的膜基结合力可达58N；薄膜的摩擦因数较无膜基体降低80%，磨痕宽度减小约85%；在钢球表面制备的非晶碳基薄膜的均匀性较好，且能保持材料的纳米级光滑表面形貌，
与基体的附着力能达到HF1级。经模拟工况测试可知，镀膜后钢球的抗压缩性能良好，完全满足使用需求。关键词：角接触球轴承；钢球；非品碳基薄膜；制备工艺
中图分类号：TH133.33*1；TF123.3*1
文献标志码：B
文章编号：10003762(2016)09 004005
Study on Technology for Preparation of Composite Carbon -Based
Thin Films on Surface of Steel Balls
Li Zhendong', Liu Sen", Zhan Hua'-2, Wang Yiqi'-2, Wang Weiping.2
(1. Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083 , China ; 2. Beijing Golden Wheel Special Machine Co. , Lid. , Beijing 100083, China; 3. AVIC Harbin Bearing Co. ,Lid. , Harbin 150025, China)
Abstract: The amorphous carbon based thin films are prepared on surface of steel balls through tooling design and process coordination, the structure, adhesion between film and substrate, tribological properties and homogeneity, sur-face roughness, adhesiveness of film layer and carrying capacity of amorphous carbon based thin films on surface of steel balls are studied. The results show that the thin films consist of columnar CrN layer and amorphous carbon based thin film layer. The adhesion between film and substrate reaches to 58 N. The friction coefficient of thin films is de creased by 80% when compared with filmless substrate, and the width of wear scar is reduced by 85% . The amorphous carbon based thin films on surface of steel balls have good uniformity, and the nanoscale smooth surface morphology of malerials is kept. The adhesive force between film and substrate reaches to HF1 level. The simulated operating condi-tion test shows that the steel balls after coating have good resistance to compression, and the application requirements are fully met.
Key words : angular contact ball bearing: steel ball; amorphous carbon based thin film; preparation technology
航空发动机主轴轴承是航空发动机的关键部件，大多采用角接触球轴承和圆柱滚子轴承，轴承在高速、高温、受力复杂的条件下运转，其质量和性能直接影响发动机性能、寿命和可靠性"。接触疲劳是航空轴承最主要的失效模式之一[2-4],有多
收稿日期：2016-04-13；修回日期：2016-05-31
作者简介：李振东(1983一），男，汉族，河南焦作人，博士研究生，主要研究方向为摩擦学与表面技术，E－mail：
18611903779@163.com。万方数据
种因素影响滚动轴承疲劳寿命3]，如轴承的材料特性、几何特性、表面特性、润滑状态、载荷、温度以及环境等。如何确定并提高滚动轴承的疲劳寿命是轴承技术领域重要的研究方向，更是先进航空器设计与应用单位垂待突破的关键技术问题。
采用物理气相沉积(PVD)技术对轴承进行表面改性的研究和应用日益增多，先进工业国家已在多种机型或发动机上有应用。文献[6-7]研究了启停断油工况的轴承使用寿命，采用PVD技术制备了类金刚石(DLC)涂层、硅掺杂类金刚石（Si