研制出一种在钛板上镀铂金的新工艺,该法中的弱酸性电镀液主要由柠檬酸钠、乙二胺四乙酸(EDTA)和少量六氯合铂酸、氯化铵组成.此外还添加了微量的稀土盐和A(氨基酸类),B(硬化元素)两种试剂.A可以提高铂在溶液中的稳定性和镀层的均匀性,B可以提高镀铂层的光泽度和硬度.研究表明,镀层的优良性主要取决于电镀液的温度、pH值和电流密度,试验在较低的温度和较高的电流效率下获得了光亮均匀的铂镀层,并在主盐浓度不高的情况下获得了很好的铂镀层,大大降低了成本.
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