Ru-Tie L.,Central South University |
Xiang X.,Central South University |
Fu-Sheng C.,Fujian Longxi Bearing Co. |
Jin-Zhong L.,Fujian Longxi Bearing Co. |
And 2 more authors.
Tribology International | Year: 2011
As a solid self-lubricating material to serve under heavy load and low velocity, graphite containing tin lead bronzesteel bimetal composites were prepared using the powder metallurgy (P/M) technique. Effects of graphite content on tribological performance under reciprocal sliding were studied using the UMT-2MT tribo-meter. The optimal performance of average friction coefficient, maximum friction coefficient, friction coefficient amplitude and wear resistance can be achieved at the graphite content of ∼3 wt%. Appropriate graphite content and hardness are the two most crucial factors to achieve a good quality lubricating film on the worn surface and hence the desired solid lubrication performance. © 2010 Elsevier Ltd.
Liu R.,Central South University |
Xiong X.,Central South University |
Chen F.,Fujian Longxi Bearing Ltd Company |
Lu J.,Fujian Longxi Bearing Ltd Company |
And 2 more authors.
Fenmo Yejin Jishu/Powder Metallurgy Technology | Year: 2010
Bronze-steel bimetal containing graphite was prepared by powder metallurgy process. Effects of graphite contents on materials hardness, microstructure, tribological performance as well as mechanism were studied with multi-function micro-friction & wear tester, SEM and other equipment. It shows that the hardness decreases while tribological performance becomes better first and then worse with graphite content increasing. Materials have the best performance in average friction coefficient, maximum friction coefficient and friction coefficient change range when graphite content 3wt%. Under certain testing conditions, proper graphite content and materials hardness are key to ensure the forming of graphite film on frictional surface and to show the solid lubrication effect.