Browse > Article

Molybdate Chemical Conversion Coating of Electro-Galvanized Steel  

김헌태 (동아대학교 금속공학과)
김인수 (동아대학교 금속공학과)
Publication Information
Journal of the Korean institute of surface engineering / v.37, no.4, 2004 , pp. 200-207 More about this Journal
Abstract
Molybdate chemical conversion coating layer formed on EGI has been studied in view of corrosion resistance, surface morphologies, and phases formed. It was found that coating layer consists of$ MoO_3$, $MoO_2$, Mo oxides having lower valences than 4 and ZnO. It is interesting to note that the coating layer formed at high Mo concentration (30 g/l) in the temperature range of $40-60^{\circ}C$ exhibited relatively high corrosion resistance, although thickness of coating layer is nearly identical with those formed under the other conditions. It was believed that an increase of driving force due to high Mo concentration plays an important role in the formation of corrosion-resistant coating layer, probably due to tile formation of dense coating layer.
Keywords
Molybdate; Chromate; Chemical conversion cooling; EGI; Corrosion resistance;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. D. Wilcox, D. R. Gabe, Metal Finishing, 86(9) (1988) 71
2 D. R. Gabe, S. E. Gould, Surface and Coatings Technology, 35 (1988) 79   DOI   ScienceOn
3 J. Lu, Z. Ye, J. Huang, L. Wang, B. Zhao, Applied Surface Science, 207 (2003) 295   DOI   ScienceOn
4 J. A. Wharton, G. D. Wilcox, K. R. Baldwin, Trans IMF, 77(4) (1999) 152   DOI
5 N. N. Voevodin, N. T. Grebasch, W. S. Soto, F. E. Amold, M. S. Donley, Surface and Coating Technology, 140 (2001) 24   DOI   ScienceOn
6 S. Langard, T. Norseth, Handbook on the Toxicity of Metals, Elsevier, New Youk, (1979)
7 J. G. Choi, L. T. Thompson, Applied Surface Science, 93 (1996) 143   DOI   ScienceOn
8 J. D. Ramsey, R. L. McCreery, Corrosion Science, 46(7) (2004) 1729   DOI   ScienceOn
9 D. J. McCoy, Presented at the Second AESF/EPA Chromium Colloquium, Miami, FL, February (1990)
10 F. W. Eppensteiner, M. R. Jenkins, Metal Finishing, 98 (2000) 497   DOI   ScienceOn
11 L. Jintang, K. Gang, C. Jinhong, X. Qiaoyu, S. Jinbing, Corrosion Science and Protection Technology, 13(1) (2001) 46
12 L. S. Sanches, S. H. Domingues, E. B. Marino, Electrochemistry Communications, 6 (2003) 543   DOI   ScienceOn
13 E. Almeida, T. C. Diamantino, M. O. Figueiredo, C. Sa, Surface and Coating Technology, 106 (1998) 8   DOI   ScienceOn
14 G. D. Wilcox, D. R. Gabe, M. E. Warwick, Corrosion Rev, 6(4) (1986) 327
15 Y. Liu, P. Skeldon, G. E. Thompson, H. Habazaki, K. Shimizu, Corrosion Science, 46 (2004) 297   DOI   ScienceOn
16 R. L. Twite, G. P. Bierwagen, Progress in Organic Coating, 33 (1988) 91