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为了探索陶瓷与金属组合作为高温润滑材料的可能性,利用端面摩擦磨损试验机测定了4种陶瓷SiC、Si3N4、Al2O3和ZrO2与SUS304不锈钢在室温至500℃下的摩擦学性能.摩擦试验结果表明,SiC、Si3N4和Al2O3在低于200℃时的摩擦系数稳定且都低于0.2,但在200℃以上时的摩擦性能却都不稳定,摩擦系数在0.2-0.4之间;ZrO2在200℃以下时的摩擦性能不稳定,而在200℃以上时的摩擦系数低于6.2且较稳定。磨损试验结果表明,在4种陶瓷中ZrO2的磨损率最低[-2.60×10-9mm3/(N·m)],SiC和Si3N4的磨损率居中[分别为1.80×10-6mm3/(N·m)和4.40×10-6mm3/(N·m)],Al2O3的磨损率最高[3.64×10-5mm3/(N·m)];分别与这4种陶瓷对磨的不锈钢的磨损率都高[1.40×10-5-4.52×10-5mm3/(N·m)].
In order to explore the possibility of ceramic-metal combination as a high-temperature lubricating material, the tribological properties of four kinds of ceramic SiC, Si3N4, Al2O3 and ZrO2 and SUS304 stainless steel at room temperature to 500 ℃ were measured by an end friction tester. The results of the friction test show that the friction coefficients of SiC, Si3N4 and Al2O3 below 200 ℃ are both stable and lower than 0.2, but their friction properties are not stable at temperatures above 200 ℃. The friction coefficient is between 0.2-0 .4; ZrO2 at 200 ℃ below the friction performance instability, while at 200 ℃ above the friction coefficient of less than 6.2 and more stable. The results of wear test show that the wear rate of ZrO2 is the lowest among the four ceramics [-2.60 × 10-9mm3 / (N · m)], and the wear rates of SiC and Si3N4 are the lowest [1.80 × 10-6mm3 / (N · m) and 4.40 × 10-6mm3 / (N · m), respectively. The wear rate of Al2O3 was the highest [3.64 × 10-5mm3 / (N · m)]. Of the wear rate of stainless steel are high [1.40 × 10-5-4.52 × 10-5mm3 / (N · m)].