摘要
在Ｍ－２００环一块磨损试验机上研究了蒸馏水润滑条件下Ｓｉ３Ｎ４、Ａｌ２Ｏ３陶瓷与灰铸铁（ＨＴ）配副时的滑动摩擦磨损特性，并与这两种陶瓷和０．８％Ｃ钢（Ｔ８）配副相对比；在扫描电镜（ＳＥＭ）下对磨损后的试样表面进行了形貌观察和能谱分析。结果表明：Ｓｉ３Ｎ４／ＨＴ的摩擦系数最小，而且Ｓｉ３Ｎ４与ＨＴ的磨损率均比Ｓｉ３Ｎ４与Ｔ８配副时低得多，其原因是由于在灰铸铁表面形成了一层含石墨的氧化膜；Ａｌ２Ｏ３／ＨＴ与Ａｌ２Ｏ３／Ｔ８的摩擦系数差别不大，但灰铸铁的磨损体积小于Ｔ８。这是由于当Ａｌ２Ｏ３与ＨＴ配副时，很难在ＨＴ表面形成含石墨的表面膜，但ＨＴ中的石墨膜减轻了Ｆｅ向Ａｌ２Ｏ３表面的转移从而降低了磨损。
The water-lubricated sliding wear behavior of Si3N4 and Al2Oa against graycast iron is studied on block-ring wear test machine type M-200. In order to comparewith cast iron Pairings, the friction and wear tests of 0.8%C steel/ceramics were alsocarried ont. The morphology of the worn surfaces was examined under scanning electronmicroscope and microanalysis was conducted by energy-dispersive X-ray analysis. Thereaults skowed tkat:the lowest friction coefficient appears in the case of Si3N4/cast ironand the wear of Si3N4 and cast iron is lower than that of Si3aN4 and the steel in tke caseof Si3N4/steel pairings respectively. The reason is that there exists an oxide film contai-ning graphite formed on the surface of cast iron in the wear process; The friction coeffi-cient of Al2O3/cast iron and Al2O3/steel makes no difference. But the wear of gray castiron is smaller than that of steel.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
1996年第2期8-13,共6页
Journal of Mechanical Engineering
基金
本文系福特一中国研究与发展基金中国科学院兰州化学物理研究所固体润滑开放研究实验室
