中国机械工程

• 机械基础工程 • 上一篇    下一篇

类金刚石膜在水环境下的摩擦学行为

郭飞飞1;金守峰1;秦立果2;董光能2   

  1. 1.西安工程大学机电工程学院,西安,710048
    2.西安交通大学机械工程学院,西安,710049
  • 出版日期:2019-09-25 发布日期:2019-09-24
  • 基金资助:
    陕西省自然科学基础研究项目(2018JQ5171);
    西安工程大学博士科研启动基金资助项目(BS1701)

Tribological Behavior of DLC Films under Water Environment

GUO Feifei1;JIN Shoufeng1;QIN Liguo2;DONG Guangneng2   

  1. 1.College of Mechanical and Electrical Engineering,Xi'an Polytechnic University,Xi'an,710048
    2.College of Mechanical Engineering,Xi'an Jiaotong University,Xi'an,710049
  • Online:2019-09-25 Published:2019-09-24

摘要: 测试了 CoCrMo合金表面沉积类金刚石薄膜与CoCrMo在水溶液润滑下的摩擦磨损行为。结果表明:摩擦副在不同浓度牛血清白蛋白溶液润滑下的平均摩擦因数均在0.10左右,CoCrMo合金销磨损量最小值为1.69×10-5 mm3;相同条件下,生理盐水溶液润滑的磨损量为1.38×10-5 mm3,且销表面有转移膜生成;牛血清白蛋白溶液润滑时,界面蛋白吸附层屏蔽了转移膜的形成。根据结果可知,转移膜的形成经历了磨屑附着、连续转移、局部脱落的过程。

关键词: CoCrMo合金, 类金刚石膜, 摩擦, 磨损, 润滑

Abstract: Tribological behavior of the DLC films was analyzed systematically, which were deposited on the polished surfaces of CoCrMo alloy with respect to the CoCrMo under the lubrication of aqueous solution. Results show that the average friction coefficient is about 0.10 under bovine serum albumin (BSA) solution lubrication with different concentrations,and the smallest wear loss of CoCrMo pin is about 1.69×10-5 mm3. In the same conditions, the wear loss of CoCrMo pins under the lubrication of physiological saline solution is 1.38×10-5 mm3. The DLC transfer layer exists on the wear scar lubricated with physiological saline solution. It indicates that the formation of DLC transfer layer is inhibited by the adsorption of bovine serum albumin protein layer. The formation of transfer layer has undergone the processes of wear debris adhesion, continuous transferring, and partial delamination.

Key words: CoCrMo alloy, diamond-like carbon(DLC) film, friction, wear, lubrication

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