电沉积Zn-Fe合金的渗氢行为研究 关键词： 三价铬；黑色钝化；发黑剂；磷酸盐；锌镀层 [gap=685]Key words：trivalent chrome；black passivation；blackening agent；phosphate；galvanized coating
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A kind of the steel blackening agent performance satisfactorily was developed.
研制了一种性能优良的钢铁常温发黑处理剂。
The blackening film with better brightness has better corrosion resistance and compactness and strong adhesive force. It is a perfect blackening agent.
发黑膜层与基体结合力强、耐蚀性高、致密性好且色泽光亮，是一种理想的钢铁防锈发黑剂。
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