摘要
采用摩擦磨损试验机研究不同滑动距离下的SiC颗粒增强铝基复合材料(SiC体积含量为9%)的摩擦磨损性能。在载荷45 N(5 MPa)、转速200 r/min、转动距离分别为5000 r、10000 r以及20000 r条件下,进行连续干滑动摩擦实验。结果表明:在长程连续干滑动下,其摩擦系数变化可分为磨合区、缓慢上升区、加速上升区3个阶段;随着摩擦距离的增加,基体表面的温度急剧升高,进而发生黏着磨损,产生塑性流变区,多种摩擦方式并存使得该条件下摩擦系数与磨损量均增加。
The effect of sliding distances on aluminum matrix composite reinforced by silicon carbide particle with volume fraction of 9% was investigated. Friction behavior and wear resistance of the composite with distances of 5000 r, 10000 r and 20000 r were stud-ied under dry sliding conditions of the same speed and load（200 r/min, 45 N）. The results show that the friction coefficient in long-range sliding process displays three stages：wearing zone, stable zone and accelerating zone. The matrix surface produces severe adhe-sion because of the rising temperature and then leads plastic areas, in which both friction coefficient and wear rate are increased.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2016年第6期61-67,共7页
Journal of Aeronautical Materials
关键词
SIC颗粒增强铝基复合材料
干滑动摩擦
塑性流变区
摩擦系数
磨损率
silicon carbide reinforced aluminum matrix composite
continuous dry sliding friction
plastic area
friction coefficient
wear rate
