摘要
作者在球-盘式摩擦磨损试验机上采用阶梯式加载和20~#机油滴注式润滑进行了GCr15钢球对45~#钢盘的摩擦磨损试验。通过摩擦系数的变化记录了在不同滑动速度下摩擦磨损状态发生转化时的临界载荷,从而获得了反映摩擦副摩擦学特性的P-V图,并用扫描俄歇微探针仪(SAM)研究了该摩擦副处于不同状态时表面氧化膜的结构,提出了钢表面氧化膜的结构层次模型,论证了钢的摩擦磨损特性与氧化膜结构之间的关系。
In this paper, the friction and wear tests of GCr15 steel-45# steel pairs were conducted on a 'ball-on-disc' testing machine using stepwise loading method under drop-feed lubrication of 20# engine oil. The critical load showing the transition of friction and wear states were recorded under the condition of different sliding speed. Based on the test results a new P-V diagram was obtained. The structure of surface oxide film for different states was analysed by means of Scanning Auger Micro-probe (SAM). In order to determine accurately the type of oxide film at different depth, a new method by measuring the valence state M2,3 VV of Fe was employed. Thus, a complete structure model of oxide film was proposed and the mechanism of transition of friction states on P-V diagram can be explained appropriately by the continuous formation and breakdown of oxide film, which are related to many factors, such as, load, speed, loading method, hardness of substrate, surface roughness, lubrication mode, characteristics of lubricating oil etc.
出处
《固体润滑》
CSCD
北大核心
1991年第2期97-102,共6页
关键词
润滑
钢
氧化膜
结构
SAM
oxide film on steel surface, structure model of oxide film, oxide layer, diffusion layer, stable layer
