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    Low-carat corrosion-resistant gold alloy with the skin of the alloy not being blacked upon casting
    1.
    发明授权
    Low-carat corrosion-resistant gold alloy with the skin of the alloy not being blacked upon casting 失效
    低合金耐腐蚀金合金与合金的皮肤在铸造时不被黑化

    公开(公告)号：US4411863A

    公开(公告)日：1983-10-25

    申请号：US391941

    申请日：1982-06-24

    申请人： Masasuke Otsuka ,  Hideyo Maniwa ,  Shinya Nishina

    发明人： Masasuke Otsuka ,  Hideyo Maniwa ,  Shinya Nishina

    IPC分类号： C22C5/06 ,  A61K6/04 ,  B22D25/02 ,  C22C30/00 ,  H01H1/023

    CPC分类号： A61K6/046 ,  C22C30/00 ,  H01H1/023

    摘要： A low-carat corrosion-resistant gold alloy which is not blacked in its skin surface color upon being cast is provided. The alloy is used as cast alloy for reparation of tooth crowns, as general decorative articles, or as contact alloy used in electrical apparatus. The alloy is composed essentially of gold, palladium and silver, with addition thereto of indium in place of copper contained in the conventional alloys, and necessary amounts of zinc or tin as deoxidant. Copper contents have been desired in view of improving the castability and mechanical strength of the alloy but the skin surface of the cast alloy may thereby be blacked to detract from aesthetic effects thus making it necessary to wash off the blacked oxide film by use of strong acid washing agents. The indium added in place of copper affords necessary mechanical properties to the alloy while providing aesthetically desirable silver to gray skin color and making the washing with strong acids unnecessary.

    摘要翻译： 提供了一种低克拉耐腐蚀金合金，其在铸造时不会在其皮肤表面上变黑。 该合金用作用于修复牙冠的铸造合金，作为通用装饰制品，或用作电气设备中的接触合金。 该合金基本上由金，钯和银组成，其中添加了铟代替常规合金中所含的铜，以及必需量的锌或锡作为脱氧剂。 考虑到提高合金的铸造性和机械强度，期望铜含量，但铸造合金的表皮表面可能因此被黑化而损害美观效果，从而需要通过使用强酸来洗去黑色氧化物膜 洗涤剂。 添加了铜的铟为合金提供必要的机械性能，同时提供美观的银色至灰色的皮肤颜色，并且不需要用强酸进行洗涤。