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采用Al-Zn-In-Mg-Ti合金作为阳极材料,杂质元素分别为Fe、Si和Cu,通过控制变量法,对牺牲阳极进行电化学性能测试。讨论了杂质元素对Al-Zn-In-Mg-Ti牺牲阳极电化学性能和表面溶解状态的影响。评价了不同杂质元素对Al-Zn-In-Mg-Ti牺牲阳极腐蚀防护性能的影响。结果表明:当Fe元素含量控制在0.1%左右,Si元素含量控制在0.1%左右,Cu元素含量控制在0%的情况下,Al-Zn-In-Mg-Ti牺牲阳极腐蚀防护性能最佳。
The Al-Zn-In-Mg-Ti alloy was used as the anode material, and the impurity elements were Fe, Si and Cu, respectively. The electrochemical performance of the sacrificial anode was tested by the controlled variable method. The effects of impurity elements on the electrochemical properties and surface dissolution of Al-Zn-In-Mg-Ti sacrificial anodes were discussed. The effects of different impurity elements on the corrosion protection of Al-Zn-In-Mg-Ti sacrificial anodes were evaluated. The results show that the corrosion protection performance of Al-Zn-In-Mg-Ti sacrificial anode is the best when the Fe content is controlled at about 0.1%, the Si content is controlled at about 0.1% and the Cu content is controlled at 0%.