【摘要】 利用SRV球-盘摩擦磨损试验机考察了(Ca,Mg)-Sialon陶瓷/GCr15钢球在3种钠盐溶液中的摩擦学性能.试验结果表明:与干摩擦相比,盐溶液改善了(Ca,Mg)-Sialon陶瓷的摩擦学性能;(Ca,Mg)-Sialon陶瓷在不同介质中的磨损体积损失顺序为水>干摩擦>Na2S2O8≈Na2S2O3>Na2SO4;摩擦系数在干摩擦下最大,在3种钠盐溶液润滑下最小.X射线光电子能谱(XPS)、傅立叶变换反射红外光谱(FT-IR)及电子探针(EPMA)分析结果表明,含硫盐同摩擦副表面发生了复杂的摩擦化学反应,从而导致盐溶液润滑性能的差异更多还原

【Abstract】 The tribological properties of (Ca,Mg) Sialon in dry sliding and under various lubricated conditions were investigated using an SRV ball on disk test rig. The results show that all the sodium solutions reduce both the friction coefficients of (Ca,Mg) Sialon/GCr15 steel pair and the wear volume loss of (Ca,Mg) Sialon as compared with dry sliding and water lubrication. The wear volume order of (Ca,Mg) Sialon in dry sliding and under various lubricated conditions is as follows: water>dry air>Na 2S 2O 8≈Na 2S 2O 3>Na 2SO 4; the friction coefficient is ranked as: dry air>water>Na 2S 2O 8, Na 2S 2O 3, Na 2SO 4. XPS, FT IR and EPMA results show that complicated tribochemical compounds have been produced on both the wear tracks of (Ca,Mg) Sialon and GCr15 steel, which accounts for the different lubricity of the sodium solutions.更多还原