通过正交试验确定了稀土镧盐钝化镀锌钢板的最佳工艺条件为:30 g/L硝酸镧、20ml/L双氧水、pH值为4、40℃下钝化30 s.利用碱浸失重试验、中性盐雾试验和电化学阻抗谱评价了钝化膜的耐腐蚀性能.结果表明,经稀土镧盐处理后的试样阻抗值相对于空白试样大幅度提高,腐蚀速率降低1个数量级,抗白锈时间达54 h.扫描电镜(SEM)结果表明,稀土镧盐钝化膜对基体的覆盖度较高.
参考文献
| [1] | L. Hua;Y.C. Chan;Y.P. Wu;B.Y. Wu .The Determination Of Hexavalent Chromium (cr~(6+)) In Electronic And Electrical Components And Products To Comply With Rohs Regulations[J].Journal of hazardous materials,2009(2/3):1360-1368. |
| [2] | 杨宁,龙晋明.稀土钝化--金属防腐蚀表面处理新技术[J].稀土,2002(02):55-62. |
| [3] | LU Jin-tang,WU Hai-jiang,KONG Gang,CHE Chun-shan,XU Qiao-yu.Growth and corrosion behavior of rare earth film on hot-dip galvanized steel[J].中国有色金属学会会刊（英文版）,2006(06):1397-1401. |
| [4] | Trabelsi W;Cecilio P;Ferreira MGS;Montemor MF .Electrochemical assessment of the self-healing properties of Ce-doped silane solutions for the pre-treatment of galvanised steel substrates[J].Progress in Organic Coatings: An International Review Journal,2005(4):276-284. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%