含二烷基二硫代磷酸锌润滑下等离子渗氮钢的摩擦磨损性能研究

高晓成; 岳文; 王成彪; 李星亮; 王松; 刘家浚

含二烷基二硫代磷酸锌润滑下等离子渗氮钢的摩擦磨损性能研究

1.
中国地质大学工程技术学院, 北京 100083
2.
清华大学机械工程系, 北京 100084

基金项目:

国际合作重点项目(2010DFR50070)资助.

详细信息

中图分类号: TH117.3
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出版历程
- 收稿日期: 2011-04-07
- 修回日期: 2011-08-08

Friction and Wear Behavior of Plasma Nitrided Steel under Lubrication of Zinc Dialkyldithiophosphate

1.
School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
2.
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

Funds:

The project was supported by Fundamental Research Funds for the Central Universities (2010ZY51 and 2010ZY40) and the Program for Key International Science and Technology Cooperation Project of China (2010DFR50070).

摘要

摘要: 本文对比研究了等离子渗氮GCr15钢与GCr15钢基材在含二烷基二硫代磷酸锌(ZDDP)润滑下的摩擦磨损性能.利用脉冲直流等离子渗氮炉对GCr15钢进行离子渗氮处理,采用X射线衍射(XRD)分析了离子渗氮层相组成,测量了渗氮前后的表面硬度值,在四球摩擦磨损试验机上考察了GCr15钢渗氮处理前后在含ZDDP润滑下的摩擦磨损性能,通过扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)的分析探讨了摩擦学作用机理.结果表明:离子渗氮处理可以明显提高GCr15钢的表面硬度值,在ZDDP作用下,其减摩性能和抗磨性能都有明显的提高,其中在质量百分数为1.5%的ZDDP润滑作用下具有最优的效果,研究证明这是由于在离子渗氮GCr15钢和未渗氮GCr15钢摩擦表面分别生成了正磷酸盐和焦磷酸盐的摩擦反应膜,并且前者表面的磷酸盐膜总量多于后者,可以有效地隔离摩擦副表面的直接接触.
- 等离子渗氮 /
- 润滑油添加剂 /
- 二烷基二硫代磷酸锌 /
- 摩擦磨损性能
Abstract: The hardness and chemical composition of plasma nitrided AISI 52100 steel surface were analyzed by means of X-ray diffraction (XRD) and hardness tester. Friction and wear behaviors of plasma nitrided AISI 52100 steel were examined on a four-ball friction and wear tester under lubrication of poly-α-olefin using ZDDP as an additive. Anti-wear and friction-reduction mechanisms were investigated using scanning electron microscopy (SEM) and X-ray photoelectron spectrometer (XPS). The results show that plasma nitriding can significantly improve the surface hardness of steel. The nitrided steel exhibited lower friction coefficient and better anti-wear properties compared with that of the untreated steel. It was attributed to that the amount of orthophosphates on the nitrided AISI 52100 steel surface was higher than the amount of pyrophosphates on the AISI 52100 steel surface. The best tribological property can be obtained using 1.5% ZDDP.
- plasma nitriding /
- lubricating additive /
- ZDDP /
- friction and wear behavior

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