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Ⅰ前言最近在点焊中获得应用的电极合金,是把薄层的Cu—AJ合金粉内氧化后,再行热挤压制得的Al_2O_3弥散强化铜。为了改善这种内氧化合金的特性,进一步开发高性能的弥散强化铜,作者用第一种方法,试图在Cu—Al和Cu—Si合金中添加Tj或Zr,使析出的弥散氧化物粒子微细化来达到目的,结果发现粒子微细化是有限度的。于是提出了制造Al_2O_3弥散强化铜的
I. INTRODUCTION Electrode alloys that have been recently used in spot welding are Al 2 O 3 dispersion-strengthened copper prepared by internal oxidation of a thin layer of Cu-AJ alloy powder followed by hot extrusion. In order to improve the properties of this internal oxidation alloy and further develop high-performance dispersion-strengthened copper, the author tried to add Tj or Zr to the Cu-Al and Cu-Si alloys by the first method to make the precipitated dispersion of oxide particles fine To achieve the goal, the results showed that the particle refinement is limited. So made the manufacture of Al 2 O 3 dispersion strengthened copper