The titanium-containing oxide film has attracted attention due to the phenomenon of self-sealing pores. The influences of fluorotitanate (K2TiF6), phytic acid (H12Phy) and sodium fluoride(NaF) concentrations as well as final voltage on corrosion resistance of oxide film were investigated by an orthogonal experiment with four factors and three levels. The coating performances were characterized by using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and electrochemical methods. The results show that the sequence of processing factors on the corrosion resistance of oxide film is H12Phy concentration > NaF concentration > final voltage > K2TiF6 concentration. Anodic coatings are mainly composed of TiO2, MgF2, Mg2PO4F and Mg2TiO4. Micro-arc oxidation (MAO) coating can significantly improve the corrosion resistance of magnesium alloy. However, with the prolonging of immersion time, the coating corrosion resistance decreases.


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    Title :

    Preparation and corrosion resistance of titanium-containing coating on AZ31B magnesium alloy


    Contributors:
    SHI Xiaoting (author) / ZHU Yuanyuan (author) / LI Guoqiang (author) / ZHANG Shufang (author) / ZHAO Rongfang (author) / ZHANG Yijia (author) / ZHANG Rongfa (author)


    Publication date :

    2019




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




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