发明授权
- 专利标题: Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture
- 专利标题(中): 贵金属制品,其制造方法,其制造用的可成型混合物及其制造方法
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申请号: US231101申请日: 1994-04-22
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公开(公告)号: US5376328A公开(公告)日: 1994-12-27
- 发明人: Koji Hoshino , Masaki Morikawa , Tohru Kohno , Koshiro Ueda , Masaki Miyakawa
- 申请人: Koji Hoshino , Masaki Morikawa , Tohru Kohno , Koshiro Ueda , Masaki Miyakawa
- 申请人地址: JPX Tokyo
- 专利权人: Mitsubishi Materials Corporation
- 当前专利权人: Mitsubishi Materials Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX2-128447 19900518; JPX2-178753 19900706; JPX2-241014 19900911; JPX2-241015 19900911; JPX2-241016 19900911; JPX2-241017 19900911; JPX2-241018 19900911; JPX2-270938 19901009; JPX2-270939 19901009
- 主分类号: A44C27/00
- IPC分类号: A44C27/00 ; B22F3/22 ; B22F9/24 ; B44C5/00 ; C22C1/04 ; B22F1/00
摘要:
There is disclosed a precious metal article which is formed of a solid-phase sintered product of a precious metal powder. For manufacturing the precious metal article, a moldable mixture which contains a precious metal powder and a binder removable by sintering is shaped into a prescribed molded object, and the molded object is then subjected to sintering. The moldable mixture is produced by preparing a precious metal powder, preparing a jellylike cellulose binder by blending a cellulose with water and leaving for a prescribed period of time, and blending the precious metal powder and the jellylike cellulose binder together. The most preferable moldable mixture contains 50 to 90% by weight of precious metal powder, 0.8 to 8% by weight of water-soluble cellulose binder, 0.08 to 3% by weight of a surface-active agent. 0.1 to 3% by weight of oil, balance water and unavoidable impurities. The precious metal powder preferably contains gold powder and powder of an alloy containing silver or copper, and the gold powder is obtained by submerged-reduction method.
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