Zone Refining of Aluminum
Takao Kino, Nobuo Kamigaki, Hitoshi Yamasaki, Jun Kawai, Yasuhiko Deguchi, Isao Nakamichi
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1976 Volume 17 Issue 10 Pages 645-648
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1976 Volume 17 Issue 10 Pages 645-648
99.999% aluminum was zone-refined in vacuum better than 1×10−6 Torr, and various zone speeds, zone lengths and numbers of passes were tried to know the optimum refining conditions. The impurity content was estimated from the residual resistivity, and the highest resistance ratio in bulk R300⁄R4.2 obtained in the present work was 50000.
