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High Performance Chromium-Free Passivation Technology

Guo Chong-wu

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Abstract

The ZECCOAT chromium-free passivation process is presented.The process features high-tech nanotechnology,non-toxic passivation solution,thin and self-reparative passivation film as well as high corrosion resistance of passivated products.The production practice shows that ZECCOAT chromium-free passivation process is about the same with traditional trivalent chromium passivation + sealing process in cost.Neutral salt spray test results show that compared with directly using ZECCOAT chromium passivation,the use of trivalent chromium passivation + ZECCOAT chromium passivation can significantly improve the corrosion resistance of products.

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What this paper is about

The ZECCOAT chromium-free passivation process is presented.The process features high-tech nanotechnology,non-toxic passivation solution,thin and self-reparative passivation film as well as high corrosion resistance of passivated products.The production practice shows that ZECCOAT chromium-free passivation process is about the same with traditional trivalent chromium passivation + sealing process in cost.Neutral salt spray test results show that compared with directly using ZECCOAT chromium passivation,the use of trivalent chromium passivation + ZECCOAT chromium passivation can significantly improve the corrosion resistance of products.

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Available abstract

The ZECCOAT chromium-free passivation process is presented.The process features high-tech nanotechnology,non-toxic passivation solution,thin and self-reparative passivation film as well as high corrosion resistance of passivated products.The production practice shows that ZECCOAT chromium-free passivation process is about the same with traditional trivalent chromium passivation + sealing process in cost.Neutral salt spray test results show that compared with directly using ZECCOAT chromium passivation,the use of trivalent chromium passivation + ZECCOAT chromium passivation can significantly improve the corrosion resistance of products.

Key concepts: Passivation, Chromium, Materials science, Corrosion, Metallurgy, Nanotechnology, Layer (electronics)

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