Arc Erosion Properties of Cu-based Self-lubricating Composites

作者：Qian Gang; Feng Yi^*; Huang Xiaochen; Zhang Jingeheng; Liu Wenhong; Zhang Xuebin; Cai Chengyu

来源：Rare Metal Materials and Engineering, 2018, 47(6): 1818-1823.

• Cu-based self-lubricating composites
• graphite
• WS2
• MoS2
• arc erosion

The arc erosion properties of Cu-30vol%gaphite, Cu-30vol%WS2 and Cu-30vol%MoS2 self-lubricating composites were investigated. The results demonstrate that graphite cannot be melted and is mainly lost in the form of oxidation during the arc discharge process because of its extremely high melting point. In contrast, WS2 and MoS2 are melted and even react with the Cu matrix due to the high temperature caused by the arc discharge. Therefore, the arc erosion resistance of Cu-30vol%gaphite composite is better than that of the Cu-30vol%WS2 and Cu-30vol%MoS2 composites. The main arc erosion mechanism of Cu-based self-lubricating composites is found to be oxidation, melting, ejecting, internal chemical reaction and fatigue peeling.

• 出版日期2018-6
• 单位合肥工业大学