Study on Properties and Mechanism of Si-reinforced Zn-Al Alloys

摘要：

Wear resistance of Zn-AI alloys declines sharply at high-speed overload, or poor lubrication, friction interface adhering. It is necessary to further improve the properties of Zn-AI alloys. Silicon were added into Zn-AI alloys as reinforcement (Si from 3％, 5％ to 7％) and modified with mixed salt (sodiums, CaF2 and KCl ) and mixed rare earth(La and Ce oxides).Research determined the hardness, tensile toughness, wear quantities (at room and high temperature), the microstructure of alloys, analyzed the modification mechanism of modifier on silicon ,and selected a better sample for testing of high temperature wear resistance and high speed frictionrotating. The results show that silicon phases are significantly modified from sheet to spheroid, the properties are further improved because of silicon as hard phase in alloys, especially, the high temperature properties increases greatly, adhering temperature increases from below 170℃ to above 250℃.

关键词： Zn-AI Alloy Silicon Phase Wear resistance Modifier Rare earth

作者: Xiuan Song

作者单位: Taiyuan University of Technology, 030024, Taiyuan, Shanxi, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1487-1490

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）