| 摘要 |
PURPOSE:To produce a copper-alumina dispersion strengthened alloy having excellent hardness and heat resistance by mixing copper powder and aluminum powder having adequate grain sizes at a specific ratio and growing adequately the grain size during the course of mixing and subjecting the mixture to reduction and compaction molding. CONSTITUTION:Aluminum powder having <=150 mesh grain size is mixed at 0.1-3wt% with copper powder having <=150 mesh grain size and the mixture is mixed, ground and press welded by a ball mill, etc. and is mixed until the grain size grows to >=150 mesh during the course of mixing. The oxygen on the surface of the copper and aluminum combines with the aluminum to form the particles dispersed finely with the alumina in the copper. The mixture is then reduced and is hot or cold worked after compaction molding by which the cupreous dispersion strengthened alloy dispersed finely and uniformly with the alumina in the copper and having excellent hardness, conductivity, heat resistance, etc. is obtd.
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