中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 11 No. 6 December 2001 |
（1. Department of Mechanical Engineering and Automation,
Xiangtan Polytechnic University,Xiangtan 411201, P.R.China;
2. Department of Materials Science and Engineering,
Centeral South University,Changsha 410083, P.R.China;
3. Guilin Institute of Electric Technology, Guilin 541004, P.R.China）
Abstract:The dry friction and wear properties of intermetallics MoSi2 against 45 steel under different loads were investigated with M-2 type friction and wear tester. Scanning electric microscope (SEM) equipment with microprobe was employed to analyze the morphology of the friction surface. Results show that the dry friction and wear properties are deeply affected by load. The wear rate of MoSi2 at the load of 80Nis the maximum which is 36.1μg/m. On the condition of the load of 150N, MoSi2 material has the better friction and wear properties: friction coefficient is 0.28 and wear rate is 10.6μg/m. With the load increasing, the main friction mechanisms change from microslip and plastic deformation to adhesive effect, and the main wear mechanisms change from plough-groove wear and oxidationfatigue wear to adhesive wear.
Key words: molybdenum disilicide; friction and wear mechanism; dry friction
