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在M─200环─块磨损试验机上研究了陶瓷─铸铁配副在蒸馏水和空气润滑下的摩擦学特性,并以陶瓷─碳钢配副作为对比,对磨损后的试样磨面进行了扫描电镜和光镜观察,采用俄歇电子能谱(AES),X射线能谱(EDAX)以及图象分析等方法对表面膜进行了分析。结果表明:Si3N4陶瓷与铸铁在蒸馏水润滑下配副获得了非常优异的摩擦学特性,其摩擦系数仅为0.02,系统的磨损率几乎接近于零,其原因是由于在磨面上形成了具有一定厚度和面积的化学反应膜;当Si3N4与碳钢在蒸馏水润滑下配副时,由于在磨面上不能形成有效的化学反应膜,所以摩擦系数仍然崐较高;当Al2O3与金属配副时,在陶瓷磨面上形成了材料转移膜,转移膜的形成大幅度减轻了陶瓷磨损,但却加剧了金属的磨损,并使摩擦系数升高
The tribological properties of ceramic-cast iron with distilled water and air lubrication were studied on a M-200 ring-block wear test machine. The worn surface of the worn sample was scanned with ceramic-carbon steel Electron microscopy and light microscopy were used to analyze the surface films using Auger electron spectroscopy (AES), X-ray energy dispersive spectroscopy (EDAX) and image analysis. The results show that Si3N4 ceramic and cast iron have excellent tribological properties with distilled water. The friction coefficient is only 0.02 and the wear rate of the system is close to zero. The reason for this is that due to the formation of With a certain thickness and area of the chemical reaction membrane; when Si3N4 and carbon steel with distilled water lubrication match, because the grinding surface can not form an effective chemical reaction membrane, so the friction coefficient is still relatively high Kun; , A material transfer film is formed on the ceramic grinding face, the formation of the transfer film drastically reduces the ceramic wear, but aggravates the wear of the metal and increases the friction coefficient