| 摘要 |
The present invention relates to the methods for the manufacture of an electrode material applicable to special bonding of a metal of the light metal group or for spot resistance welding. The method of making an electrode material of Cu-Al2O3 includes the steps of annealing Cu-Al alloy powder in a vacuum state, and generating pure Cu-Al alloy without oxide by reducing the annealed Cu-Al alloy powder in a hydrogen atmosphere at 400 DEG DIFFERENCE 500 DEG C. A first oxidizing process oxidizes the surface of grains of the powder by heating the reduced Cu-Al alloy powder in an air or in an oxygen atmosphere at 400 DEG DIFFERENCE 500 DEG C. In an internal oxidizing process, the Al in the Cu-Al alloy powder is internally oxidized by heating the surface-oxidized Cu-Al alloy powder in an inert gas atmosphere at 900 DEG C. DIFFERENCE 1000 DEG C. to oxidize the powder grains internally, and further in a reduction process, reducing the internally oxidized Cu-Al2O3 alloy powder in a hydrogen atmosphere.
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