发明名称
摘要 Disclosed is a highly pure titanium which comprises containing not more than 200 ppm of oxygen; not more than 30 ppm each of elements consisting of iron, nickel and chromium, and not more than 0.1 ppm each of elements consisting of sodium and potassium. Disclosed is also a process for preparing the above highly pure titanium which comprises melting a crude titanium obtained by molten salt electrolysis, in a high vacuum of 5 x 10<-><5> mbar or less.
申请公布号 JPH0475301(B2) 申请公布日期 1992.11.30
申请号 JP19860123463 申请日期 1986.05.30
申请人 发明人
分类号 C22C29/02;C22B9/22;C22B34/12;C22C14/00;C23C14/34;C25C3/28;H01L21/768;H01L23/532 主分类号 C22C29/02
代理机构 代理人
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