摘要
用扫描电子显微镜（ＳＭＥ）和Ｘ－射线能谱分析法（ＥＤＸ）对铜纤维增强的半金属摩阻材料与灰铸铁对偶滑摩后的摩擦表面进行了分析，研究了摩阻材料中铜纤维的摩擦磨损行为。结果表明，在摩擦磨损过程中，摩阻材料摩擦表面上铜的分布更加弥散化，并且铜纤维具有集铁作用，因而摩阻材料摩擦表面上形成了富铁贫铜表面工作层；铜能从摩阻材料摩擦表面转移到对偶摩擦表面，故对偶摩擦面上分布一定量铜，这是摩擦副具有稳定摩擦系数和良好耐磨性的关键因素；铜纤维取向对摩阻材料摩擦磨损行为有显著影响。
The friction surfaces of the friction pair consisting of the semimetallic frictionmaterial and cast iron were examinated by scanning electron microscopy(SEM)and energydispersive analysis of X-ray(EDX).The experimental results show that copper can transferonto the friction surface of the cast iron counterpart by smearing , adhering and ploughing.Because of the smear and back transfer, the distribution of copper is more dispersive in thefriction surface of the friction material after friction. However,there exists a lot of iron onthe copper fibers in the friction surface of the friction material with iron and iron oxide weardebris adhering and mounting, These actions of the copper fibers make the friction pair havea stable friction coefficient and an excellent wear resistance. Moreover, the orientation ofcopper fibers has a great influence upon the friction and wear characteristics of the frictionmaterial. The coefficient of friction,wear loss and temperature at the friction interfacewhere the fibers are perpendicular to the friction interface are lower than those at theinterface where the fibers are parallel to the friction interface but perpendicular to the slidingdirection.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1995年第2期37-41,共5页
Acta Materiae Compositae Sinica
