常用的评价合金材料抗变色性能的方法主要有肉眼观察法、称重法、腐蚀膜显微分析法和分光光度计法。
The common methods to evaluate alloy's anti-tarnishing capability include mainly naked eye observation, weighing weight, microcosmic analysis of corrosion film and spectrophotometer.
采用正交试验和条件试验，筛选出了一种以植酸、 苯甲酸钠、 钼酸钠和EDTA为基本组成的镍磷合金抗蚀防变色剂。
A new anti-tarnish agent has been screened out, based on phytic acid, sodium benzoate, sodium molybdate and EDTA by means of orthogonal analysis and conditional experiments.
为了提高铜及其合金的表面抗变色能力，研制了一种环保的化学抛光工艺和含稀土盐的新型钝化工艺。
An environmentally-friendly chemical polishing and passivation process was established for copper and its alloys, using a rare earth salt in the passivation solution.
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