摘要
在Al2O3陶瓷/45号钢摩擦副的工作过程中,摩擦副上的载荷不是单一的静载荷加载,而是复杂的振动载荷加载。在新型振动摩擦磨损试验机上采用环-块接触摩擦方式,研究Al2O3陶瓷与45号钢在交变振动载荷条件下的摩擦磨损性能,并与静载荷下的磨损性能进行对比;对陶瓷磨损表面进行扫描电镜观察与能谱分析。结果表明:在干摩擦条件下,交变振动载荷下的磨损量比正常载荷条件下的磨损量要大;交变振动载荷下氧化铝磨损表面产生微裂纹,氧化铝陶瓷的磨损机理是脆性断裂、磨粒磨损和犁沟磨损。在加载交变振动载荷与加载载荷条件下,氧化铝陶瓷磨损表面均覆盖一层金属转移膜,其主要成分为铁的氧化物。
The load applied on Al2O3 ceramic/45 steel coupling is not the constant one but the complex vibration load, so it is important to study on the wear properties of Al2O3 ceramic under vibration load. The friction and wear properties of the Al2O3 ceramic/45 steel coupling under alternative vibration load was studied by using a new wear tester with ring-on-block friction pairs, and its results were compared with those under normal load condition. The worn surface of the Al2O3 ceramics was observed by scanning electron microscopy and carried out spectroscopy analysis. The results show that wear volume under the alternative vibration load is higher than that of the normal load in dry condition; and there are micro cracks on the worn surface under the above vibration load, and the wear mechanisms of Al2O3 ceramic are brittle fracture, abradent particles wear and ploughing wear as well. Compared with the initial surface, the worn surface was covered by a layer of metal transfer film, of which the mainly contents are ferric oxides.
出处
《粉末冶金材料科学与工程》
EI
2009年第6期417-421,共5页
Materials Science and Engineering of Powder Metallurgy
基金
国家自然科学基金资助项目(50675185))
教育部新世纪人才培养计划资助(NCET06-0708)
