Cu-0.8Cr-0.2Zr触头材料的组织与性能

Microstructure and Properties of Cu-0.8Cr-0.2Zr Alloy Contact Materials

制备了Cu-0.8Cr-0.2Zr触头合金材料,并对其组织与性能进行了研究。结果发现,Cu-0.8Cr-0.2Zr合金基体呈面心立方(FCC)结构,基体上Zr颗粒呈弥散分布,合金硬度(HB)为141,抗拉强度约为430 MPa,电导率为43.5 MS/m,软化温度为550℃。

Cu-0.8Cr-0. 2Zr alloy containing Zr was prepared by internal oxidation method, and micro- structure and properties of the alloy prepared were investigated. The experimental results indicate that the alloy maintains face centered cubic （FCC） lattice, and Zr-containing precipitates are dispersedly dis- tributed in the matrix uniformly, so the alloy exhibits excellent performance. The hardness（HV） and the tensile strength of the alloy reach up to 141, 430 MPa, respectively, while the electric conductivity reaches 43.5 MS/m with the softening temperature of 550 ℃.