刘胜林,孙亮,袁毅,卢才.热镀锌层在模拟湿热酸性大气环境中的耐蚀性研究[J].表面技术,2015,44(2):99-104.
LIU Sheng-lin,SUN Liang,YUAN Yi,LU Cai.Research on the Corrosion Resistance of Hot Dip Galvanized Coating in Simulated Hot and Humid Acidic Atmospheric Environment[J].Surface Technology,2015,44(2):99-104
热镀锌层在模拟湿热酸性大气环境中的耐蚀性研究
Research on the Corrosion Resistance of Hot Dip Galvanized Coating in Simulated Hot and Humid Acidic Atmospheric Environment
投稿时间:2014-10-24  修订日期:2015-02-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.02.019
中文关键词:  热浸镀  锌铝镍稀土合金  耐蚀性
英文关键词:hot-dip coating  Zn-Al-Ni-RE alloy  anticorrosion performance
基金项目:
作者单位
刘胜林 长安大学, 西安 710064 
孙亮 国网智能电网研究院, 北京 102211 
袁毅 国网长春供电公司, 长春 130021 
卢才 国网吉林东辽县供电有限公司, 吉林 东辽 136200 
AuthorInstitution
LIU Sheng-lin Chang'an University, Xi'an 710064,China 
SUN Liang State Grid Smart Grid Research Institute, Beijing 102211,China 
YUAN Yi State Grid Changchun Power Supply Company,Changchun 130021,China 
LU Cai State Grid Jilin Dongliao Power Supply Company Limited, Dongliao 136200, China 
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中文摘要:
      目的 研究 Q420 钢表面热镀锌工艺中,Zn 和 Zn-Al-Ni-RE 合金镀层在酸性铜离子加速盐雾试验条件下的耐蚀性能。 方法 Q420 钢表面预处理后进行热镀锌, 根据 GB 6460—1986 进行铜加速醋酸盐雾腐蚀试验,对比纯 Zn 镀层与 Zn-Al-Ni-RE 合金镀层的耐蚀性。 结果 Ni, RE 等元素的加入使镀层表面光亮,组织更加细密。 在酸性铜离子加速实验进行到 192 h 时,纯锌镀层的腐蚀质量损失是合金镀层的 2. 7 倍; 72 h 后纯锌镀层出现红锈, 120 h 后合金镀层出现红锈,说明 Zn-Al-Ni-RE 合金镀层比纯 Zn镀层更耐腐蚀。 结论 通过适量添加 Al,Ni 与稀土元素, 能使 Q420 钢合金镀层的耐蚀性能大幅度提高。
英文摘要:
      Objective To study the corrosion resistance of hot dip galvanized pure Zn and Zn-Al-Ni-RE alloy coatings of highstrength steel Q420 under the acidic and copper accelerated salt spray corrosion condition. Methods On the basis of surface pretreatment, the Q420 steel was treated by hot dip galvanizing. Copper accelerated acetic acid salt spray corrosion test was carried out according to GB 6460—1986, and the corrosion resistance of the pure Zn coating and Zn-Al-Ni-RE coating was compared. Results With the addition of Ni, RE and other elements, the coating surface was bright and the microstructure became finer. After 192 h, the corrosion weight loss of pure zinc coating was 2. 7 times higher than the corrosion weight loss of Zn-Al-Ni-RE alloy coatings under the acidic and copper accelerated salt spray corrosion condition. Pure zinc coating showed red rust after 72 h, while Zn-Al-Ni-RE alloy coating showed red rust after 120 h, so Zn-Al-Ni-RE alloy coating was more corrosion resistant than the pure Zn coating. Conclusion By means of adding nickel aluminum elements and rare earth elements, the corrosion resistance of alloy coating was greatly improved.
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