摘要
为解决大电流设备铜铝线接头电冲击、烧毁等问题,运用粉末叠层的方法制备了Cu-Al梯度功能材料试样。研究发现620℃烧结的7层试样具有较高的平均硬度和较低的电阻率,可用作铜铝导线的接头;试样的铜铝混合区烧结后有θ(CuAl2)生成,显著提高了局部区域的硬度;540℃烧结的试样电阻率最小;提高烧结温度,出现液相烧结,烧结进行更充分,θ(CuAl2)增加,平均硬度提高,电阻率也随之增加。
The purpose of the study is to solve the problem of burnout and electric shocking of copper and aluminum joints in high-current equipment. Copper/aluminum functional gradient material samples were prepared by powder overlaying. It was found that the seven lays sample sintered at 620℃ has higher hardness and lower resistivity, of which the joints of copper/aluminum wire could be made. θ（CuA12 ） generated in sintered samples dilution zone and hardness in local area increased notablely. The resistivity of samples sintered at 540℃ is the lowest. As the sintering temperature increased, liquid sintering happened and the sintering perfomed more sufficient,so the content of θ（CuAl2） and then average hardness and the resistivity increased.
出处
《材料开发与应用》
CAS
2007年第1期13-16,共4页
Development and Application of Materials
关键词
铜铝梯度材料
烧结
硬度
电阻率
Cu-Al gradient material
Sintering
Hardness
Resistivity
