Effect of Nano-Cu Lubrication Additive on the Contact Fatigue Behavior of Steel |
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| Authors: | Yi Dong Zhang Jia Sheng Yan Lai Gui Yu Ping Yu Zhang |
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| Affiliation: | 1. Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, China
2. Key Laboratory of Ministry of Education for Special Functional Materials, Henan University, Kaifeng, 475004, China
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| Abstract: | Effects of four different concentrations of nano-Cu lubrication additives on contact fatigue properties of GCr15 steel friction pairs were evaluated on a ball-rod contact fatigue tester. The anti-fatigue mechanisms of these additives were analyzed by means of scanning electron microscopy and X-ray photo electron spectroscopy. The test results and analyses show that all of these additives can raise the contact fatigue life of steel ball elements to a certain extent. The action of 10% additive is the better. It is confirmed that the main failure of the steel ball element is fatigue desquamation. The anti-fatigue mechanism of lubrication additives mainly accounts for forming a chemical reaction film on the steel rod and ball surface and decreasing in friction between the ball and rod, enhancing the ability of anti-wear. |
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