发明名称 |
Method of making high-density, high-purity tungsten sputter targets |
摘要 |
A method is provided for fabricating tungsten sputter targets having a density of at least about 97% of theoretical density and an oxygen content of at least about 100 ppm less than the starting powder. According to the principles of the present invention, a tungsten powder having a powder size less than about 50 mum and an oxygen content less than about 500 ppm is hot-isostatic pressed at a temperature of about 1200° C. to about 1600° C. and a pressure of at least about 15 ksi for at least about 3 hours. A high-purity sputter target is further achieved by using a tungsten starting powder having a purity higher than about 99.999%. |
申请公布号 |
AU1826200(A) |
申请公布日期 |
2000.07.31 |
申请号 |
AU20000018262 |
申请日期 |
1999.11.19 |
申请人 |
MATERIALS RESEARCH CORPORATION |
发明人 |
CHI-FUNG LO;DARRYL DRAPER;PAUL S. GILMAN |
分类号 |
C22C1/04 |
主分类号 |
C22C1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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