介绍了机械合金化技术的基本原理、工艺过程及其特点，阐述了机械合金化(ma)制备电触头材料的研究进展。
In this paper, the mechanisms, processing and characteristic of mechanical alloying (ma) are briefly reviewed, and the progresses of the electrical contact materials prepared by ma is described.
细晶的合金组织有助于改善铜铬触头材料的电性能。
Fine microstructure is beneficial to improving the electric properties of contact materials.
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