发明申请
- 专利标题: SILVER TERNARY ALLOY
- 专利标题(中): 银三合金
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申请号: US12766312申请日: 2010-04-23
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公开(公告)号: US20100239454A1公开(公告)日: 2010-09-23
- 发明人: Peter Gamon Johns
- 申请人: Peter Gamon Johns
- 申请人地址: GB Surrey
- 专利权人: Argentium International Limited
- 当前专利权人: Argentium International Limited
- 当前专利权人地址: GB Surrey
- 优先权: GB0312693.5 20030603
- 主分类号: C22C5/08
- IPC分类号: C22C5/08
摘要:
A firestain and tarnish-resistant ternary alloy of silver, copper and germanium contains from more than 93.5 wt % to 95.5 wt % Ag, from 0.5 to 3 wt % Ge, optionally 0.5 wt % Zn and the remainder, apart from incidental ingredients (if any), impurities and grain refiner, copper. In order to further protect an article made from the alloy, it may be surface treated with an alkanethiol, alkyl thioglycollate, dialkyl sulphide or dialkyl disulphide. Embodiments of the above alloy exhibit relatively low elution of copper when subjected to a simulated sweat test.
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