溶融銅と超硬合金の相互作用におよぼす溶融銅への添加物効果

概要

論文の詳細を見る
The present work has been undertaken for better understanding of the basic processes involved in the brazing of cemented tungsten carbides, and the interaction between Co-bonded tungsten carbide and molten copper has been studied referring especially to the effects of metal additives to copper. Techniques used for analyzing the obtained diffusion layers are EPMA and optical microscopy. It is shown that the structures of diffusion layers are classified into three types depending on the additives. Manganese, Ni and Al have the most pronounced effect on the interaction yielding an additional carbide-free layer in the cemented carbide. Addition of Co and Fe checks the penetration of copper into the cemented carbide, whereas Ag has no detectable effect. The results have been interpreted in terms of the phase relationships between additives and copper as well as the solubility of cobalt into the liquid copper.
社団法人溶接学会の論文
1978-07-05