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稀土元素對Ni-P合金電刷鍍層耐蝕性的影響

Influence of RE Element on Corrosion Resistant of Eletro-Brush-Plating

  • 摘要: 研究了稀土對電刷鍍Ni-P合金耐蝕性能及組織的影響,浸泡實驗和極化曲線表明:在鍍液中添加一定量的稀土能顯著改善鍍層耐蝕性能,X射線、透射電子顯微鏡及能譜表明:稀土元素具有促進Ni-P合金形成非晶組織的作用,并提出了稀土促進非晶化的可能機理。

     

    Abstract: The effects of the Rare Earths(RE) on the corrosion resistance and structure of the electro brush-plating Ni-P alloy coating have been investigated. The results obtained from the immersion test and the polarization curves showed that the corrosion resistance of the coating could be improved obviously with a certain amount of RE in the bath. The X-ray,TEM, EDS composition analysis showed that the RE could improved the amorphism of the Ni-P alloy coating. And the probable mechanism of the RE to improve the amorphism has been proposed.

     

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