对Zn-Al-Cd合金牺牲阳极在海水全浸和海水干湿交替条件下的电化学性能进行了对比研究,并对阳极表面腐蚀产物的形貌和阳极表面溶解状况进行了分析.随着干湿交替次数的增加,锌合金阳极的工作电位逐渐正移,发出电流的能力逐渐减弱,阳极活性逐渐降低,电流效率明显下降.在干湿交替条件下,锌合金阳极表面腐蚀产物更为致密,表面溶解状况不如全浸时的均匀.表面腐蚀产物层致密和局部腐蚀是造成干湿交替条件下锌合金牺牲阳极活性和电流效率降低的主要原因.
参考文献
[1] | A. NISHIKATA;Y. YAMASHITA;H. KATAYAMA;T. TSURU;A. USAMI;K. TANABE;H. MABUCHI .AN ELECTROCHEMICAL IMPEDANCE STUDY ON ATMOSPHERIC CORROSION OF STEELS IN A CYCLIC WET-DRY CONDITION[J].Corrosion Science,1995(12):2059-2069. |
[2] | Cruz R P;Nishikata A;Tsuru T .Pitting corrosion mechanism of stainless steels under wet-dry exposure in chloride-containing environments[J].Corrosion Science,1998,40:125-139. |
[3] | El-Mahdy GA.;Tsuru T.;Nishikata A. .Electrochemical corrosion monitoring of galvanized steel under cyclic wet-dry conditions[J].Corrosion Science,2000(1):183-194. |
[4] | Kamimura T;Stratmann M .The influence of chromium on the atmospheric corrosion of steel[J].Corrosion Science,2001,43:429-447. |
[5] | Amar Prasad Yadav;Fumiyuki Suzuki;Atsushi Nishikata;Tooru Tsuru .Investigation of atmospheric corrosion of Zn using ac impedance and differential pressure meter[J].Electrochimica Acta,2004(17/18):2725-2729. |
[6] | Chen Y Y;Tzeng J;Wei I L et al.Corrosion resistance and mechanical properties of low-alloy steels under atmospheric conditions[J].Corrosion Science,2005,47:1001-1021. |
[7] | 吴建华;温秀忭;刘光洲 等.阴极保护对海水间浸低碳钢的防蚀作用[J].中国腐蚀与防护学报,1998,18(02):131-135. |
[8] | Perkins J;Bornhold R A .The corrosion product morphology dound on sacrificial zinc anodes[J].Corrosion Science,1977,17:377-384. |
[9] | 孔小东.干湿交替条件下牺牲阳极保护效果分析[J].材料保护,1998(12):25. |
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%