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《China Mechanical Engineering(中国机械工程)》 2004-02
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Effects of Lubrication Additive on Contact Fatigue Properties of Ceramic Ball Element

Song BaoyuQu JianjunZhang FengWang Xining Harbin Institute of Technology, Harbin, 150001  
Effects of four kinds of lubrication additives on contact fatigue properties of ceramic ball were evaluated on a self-made ball-rod contact fatigue tester. The anti-fatigue mechanisms of these additives were analyzed by means of scanning electron microscopy (SEM) and X-ray diffraction spectroscopy (EDAX). The test results and analyses show that all of these additives can raise the contact fatigue life of ceramic ball element to a certain extent. The action of T305 extreme pressure additive is the best. It is confirmed that main failure of Si 3N 4 ceramic ball element is fatigue desquamation. Anti-fatigue mechanism of lubrication additives mainly accounts for forming chemical reaction film on steel rod and transfer film on ceramic ball surface and decreasing in friction between ceramic ball and steel rod.
【Fund】: 航天创新基金资助项目 ( HTCX0 0 0 6);; 黑龙江省自然科学基金资助项目 ( E0 1-16)
【CateGory Index】: TH117.2
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