( 1. 北京有色金属研究总院 国家有色金属复合材料中心， 北京 100088;
2. 北京科技大学 国家新金属材料重点实验室， 北京 100083)
摘 要: 研究了喷射成形CuCr25合金沉积坯件的致密化处理工艺及其在860~1070℃保温1h后的组织演变， 确定了热变形加工温度， 研究了热锻压和热等静压后材料的组织、致密化以及电导率、 密度、 硬度等触头材料常规性能。 结果表明： 在1070℃保温1h， 触头材料未发生熔化， 组织略微长大， 但在正常范围内，经热锻压和热等静压处理后可实现致密化。 这种先进工艺制备的新型触头材料具有良好的性能。
关键字: 喷射成形； 热等静压； 致密化处理； 触头材料
（ 1. National Engineering & Technology Research Center for Nonferrous MMCs,
Beijing General Research Institute for Nonferrous Metals, Beijing 100088, China;
2. State Key Laboratory for Advanced Metals and Materials,
University of Science and Technology Beijing 100083, China）
Abstract: The densification process of CuCr25 alloy contact materials prepared by spray forming process were studied. The microstructures of the samples kept at different temperatures for 1h and after hot forging and HIP(hot isostatic pressing) were investigated. The properties of the CuCr 25 alloy after hot-forging and HIP were analyzed too. The results show that kept at 1070℃ for 1h, the contact materials will not melt again, and the grains increase little in size, but can be accepted. After hot forging pressing and hot isostatic pressing, the density can be improved. Meanwhile, the new contact materials prepared through spray forming process have well properties.
Key words: spray forming; hot isostatic pressing(HIP); densification; contact materials
