发明授权
- 专利标题： Melting method for producing an inclusion-free Ta-base alloy
- 专利标题（中）： 用于生产无夹杂物的Ta基合金的熔化方法
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申请号： US13091852申请日： 2011-04-21
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公开(公告)号： US08636825B2公开(公告)日： 2014-01-28
- 发明人: Herwig Schiefer , Christoph Vogt , Heiko Specht , Jens Troetzschel , Egbert Stiedl
- 申请人： Herwig Schiefer , Christoph Vogt , Heiko Specht , Jens Troetzschel , Egbert Stiedl
- 申请人地址： DE Hanau
- 专利权人： W. C. Heraeus GmbH
- 当前专利权人： W. C. Heraeus GmbH
- 当前专利权人地址： DE Hanau
- 代理机构： Dicke, Billig & Czaja, PLLC
- 优先权： DE102010018303 20100423
- 主分类号： C22C47/14
- IPC分类号： C22C47/14 ; C22C27/02
摘要：
One aspect relates to a method for producing an alloy characterized by grinding tantalum to form a tantalum powder and grinding tungsten to form a tungsten powder; mixing the tantalum powder and the tungsten powder to form a blended powder. The weight fraction of tungsten powder in the blended powder is larger than in the desired alloy. A blended body is produced from the blended powder by a powder metallurgical route. A pre-alloy is produced by a first melting of the blended body and at least a fraction of at least one further metal by a melt metallurgical route. The alloy is produced by a second melting of the pre-alloy and the remaining fraction of at least one metal by a melt metallurgical route.