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    • 4. 发明授权
    • Nickel-free white gold alloys
    • 无镍白金合金
    • US5372779A
    • 1994-12-13
    • US60601
    • 1993-05-12
    • Aldo M. Reti
    • Aldo M. Reti
    • C22C5/06C22C5/02
    • C22C5/06
    • A white gold alloy composition consisting essentially of about 35 to 50 weight percent of gold, about 35 to 63 weight percent of silver, about 0.1 to 7 weight percent of a whitening component of zinc, germanium or both, and palladium in an amount of about 9 weight percent or less. The whitening component and the palladium are present in an amount sufficient to impart a white gold appearance and a liquidus temperature of no greater than about 1950.degree. F. to the alloy, preferably between about 1700.degree. and 1900.degree. F., and more preferably less than about 1850.degree. F. Thus, the preferred amount of palladium is about 2 to 5 weight percent and the preferred amount of the whitening component is about 0.5 to 6 weight percent.
    • 一种白金合金组合物,其基本上由约35至50重量%的金,约35至63重量%的银,约0.1至7重量%的锌,锗或两者的增白组分和约为 9重量%以下。 增白组分和钯的存在量足以赋予合金白金外观和不大于约1950°F的液相线温度,优选在约1700°至1900°F之间,更优选较少 比约1850°F。因此,钯的优选量为约2至5重量%,并且增白组分的优选量为约0.5至6重量%。