Cu-Cr-Zr合金电滑动磨损行为研究

Electrical sliding wear behavior of Cu-Cr-Zr alloy

将经过480℃×2h时效处理和拉拔成型制得的Cu-0.40Cr-0.10Zr合金线材在自制电磨损试验机上进行电滑动磨损实验,并运用扫描电子显微镜、能谱分析等方法对Cu-Cr-Zr合金滑动磨损表面形貌及电磨损机理进行了观察和分析。结果表明,在不加载电流的情况下Cu-Cr-Zr合金的滑动磨损机制为粘着磨损和磨粒磨损;在载流条件下的磨损机制为粘着磨损、磨粒磨损以及电烧蚀磨损,并且随着电流强度的增大,粘着磨损和电烧蚀磨损的程度也越严重。

Using SEM and EDS, the electrical sliding worn surface and mechanism of Cu-0.40Cr-0.10Zr alloy, which were tested on self-made electrical wear test facility after been drawn into wire materials and aged at 480℃ for 2h, are investigated in this paper. The wear mechanism of Cu-Cr-Zr alloy is made up of adhesive wear and abrasive wear without current, while adhesive wear, abrasive wear and arc erosion would be the dominate mechanism under currents. The trend of adhesive wear and arc erosion would be serious with the increased currents.