Harbin Sanyong Metal Surface Technology Co., Ltd.

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DingxiAnodizing of aluminum, magnesium, and titanium alloys

DingxiChemical Conversion Coatings on Aluminum, Magnesium, and Titanium Alloys

DingxiFunctional Electroplating and Chemical Plating

DingxiMicro-arc oxidation of aluminum, magnesium, and titanium alloys

DingxiFunctional anodic oxide film on aluminum alloy

DingxiPattern Formation and Selective Processing

DingxiBluing of high-alloy steels, passivation of stainless steels

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DingxiChromium-free passivation film on aluminum alloy

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DingxiChemical Conversion Coatings on Aluminum, Magnesium, and Titanium Alloys

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Product Description

The chromium-free chemical passivation process for aluminum alloys uses tungstate salts as the oxidizing agent in the surface‑treatment formulation. The resulting chemical conversion coating offers substantial protective performance—exceeding the corrosion‑resistance requirements of MIL‑DTL‑81706 for cast aluminum alloys—along with good chemical resistance and electrical conductivity; however, it lacks self‑healing capabilities. It can serve either as an independent corrosion‑protective finish or as a primer for subsequent coatings.

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DingxiHigh-Corrosion-Resistant Trivalent Chromium Passivation Film on Aluminum Alloys

DingxiHexavalent chromium chemical oxide film on magnesium alloy

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