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A Green Conversion Coating on a Magnesium Alloy for Corrosion Protection

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摘要 A novel coating on the Mg1Mn alloy was produced by anodic polarization combined with hydrothermal treatment(AP+H)in 0.1 M Na2CO3 solution.The microstructure and protection of the coating were evaluated.The coating consisted of MgCO3,Mg(OH)2 and MgO,and provided satisfactory protection in 3.5 wt%NaCl with a corrosion rate of 0.07 mm y−1 in 72 h.However,after that period,the corrosion rate of the specimen increased due to the damage of the coating.The failure of the coating was strongly related to the second phase particles(e.g.Zr particles)or impurities in the matrix.The AP+H coating is supposed to be used as a primer coating for Mg applications in kitchen ware,biomedical areas or industry.
出处 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2023年第10期1630-1648,共19页 金属学报(英文版)
基金 supported by the National Natural Science Foundation of China(No.51801168).
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