铬不锈钢/碳钢梯度材料的耐腐蚀性研究
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摘要
通过水溶液电沉积法在碳钢表面电沉积铬,并在高温下进行扩散退火处理,形成了一种铬不锈钢/碳钢梯度材料。采用电化学测试实验法对该材料的耐腐蚀性进行研究;利用Tafel直线外推法对基体与铬不锈钢/碳钢梯度材料的极化曲线进行拟合。结果表明:铬不锈钢/碳钢梯度材料的耐腐蚀性要高于碳钢基体的;随着含铬量的增加,梯度材料的耐腐蚀性依次增强。表面Cr的百分含量与腐蚀电位的关系为E=-1.6+0.01514 W_(Cr)。
Chromium was electrodeposited on the surface of carbon steel by aqueous electrodeposition and then diffusion annealed at high temperature to form a chromium stainless steel/carbon steel gradient material. The corrosion resistance of the material was studied by electrochemical test method, and the polarization curve of the matrix and chromium stainless steel/carbon steel gradient material was fitted by Tafel linear extrapolation method. The results show that the corrosion resistance of chromium stainless steel/carbon steel gradient material is higher than that of carbon steel matrix, and the corrosion resistance of the gradient material increases successively with the increase of chromium content. The relationship between the percentage of Cr obtained and the corrosion potential is E=-1.6+0.01514 W_(Cr).
Chromium was electrodeposited on the surface of carbon steel by aqueous electrodeposition and then diffusion annealed at high temperature to form a chromium stainless steel/carbon steel gradient material. The corrosion resistance of the material was studied by electrochemical test method, and the polarization curve of the matrix and chromium stainless steel/carbon steel gradient material was fitted by Tafel linear extrapolation method. The results show that the corrosion resistance of chromium stainless steel/carbon steel gradient material is higher than that of carbon steel matrix, and the corrosion resistance of the gradient material increases successively with the increase of chromium content. The relationship between the percentage of Cr obtained and the corrosion potential is E=-1.6+0.01514 W_(Cr).
引文
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[2]郑智多金属电镀污泥中铬的回收利用[D].贵阳:贵州大学,2016.
[3]吕玮,张永祥.电沉积铁铬合金的研究[J].福建师范大学学报,2002,18(1):51-54.
[4]梁艳,龙媛媛,付广艳.Fe-Cr合金在1000度空气中的高温腐蚀行为[J].辽宁化工,2004,33(5):263-266.
[5]Shen D,Li G,Guo C,et al.Microstructure and corrosion behavior of micro-arc oxidation coating on 6061 aluminum alloy pre-treated by high-temperature oxidation[J].Applied Surface Science,2013,287(24):451-456.
[6]Imazn N,Ostram M,Vidalm M,et al.Corrosion behaviour of chromium coatings obtained by direct and reverse pulse plating electrodeposition in Na Cl aqueous solution[J].Corrosion Science,2014,78:251-259.