Characteristics Evaluation of Coating Film by Thermal Spray in Seawater Solution

Abstract:

Article Preview

Many surface protection methods have been developed to apply to constructional steels to be used under severe corrosive environments. Thermal spray coating has been known to be an attractive technique due to its relatively high coating speed. However, the high corrosion resistance of coating films deposited by thermal spray method is increasingly required to expand its application. Four types of coated films (DFT: 200um), that is, pure zinc, pure aluminum, and two Al-Zn alloy (Al:Zn=85:15 and Al:Zn=95:5), were coated onto carbon steel (SS401) with arc spraying, and the corrosion behavior of their samples were evaluated by the electrochemical method in this study. The pure aluminum sample had the best corrosion resistance when exposed to seawater solution and alloy (Al:Zn=85:15), so called galvalume and alloy (Al:Zn=95:5) samples followed the pure aluminum sample. The pure zinc sample ranked 4th in corrosion resistance in this study. Morphology of corroded surfaces of pure aluminum and alloy (Al:Zn=85:15) samples exhibited a general corrosion pattern, however, the patterns of intergranular and pitting corrosion were observed for the pure zinc and alloy (Al:Zn=95:5) samples respectively. Pure zinc sample had the smallest value of porosity ratio compared to other samples due to its heavier density. Keywords : Surface protection methods, Thermal spray, Corrosion resistance, Pure aluminum, Pure zinc, Porosity ratio

Info:

Periodical:

Advanced Materials Research (Volumes 690-693)

Edited by:

Xianghua Liu, Kaifeng Zhang and Mingzhe Li

Pages:

2098-2106

Citation:

K. M. Moon et al., "Characteristics Evaluation of Coating Film by Thermal Spray in Seawater Solution", Advanced Materials Research, Vols. 690-693, pp. 2098-2106, 2013

Online since:

May 2013

Export:

Price:

$38.00

* - Corresponding Author

[1] J. P. hirvonen, P. Kauppinen and P. Andersson, Preceeding of the 1993 National Thermal Spray Conference, 475 (1993).

[2] D. A. Jones, PRINCIPLES AND PREVENTION OF CORROSION, Maxwell Macmillian International Publishing Group, New York, USA, 398 (1991).

[3] The Techonlogy Center of the Coastal Development, Corrosion Control Manual of Harbor Steel Structure, Tokyo, Jappen, 21 (1987).

[4] W. Von Baeckmann, Handbook of CATHODIC CORROSION PROTECTION", Guef publishing Company, Houston Texas, USA, 180 (1997).

[5] M. G. Fontana, Corrosion Engineering, McGraw-Hill, Inc, New Jersey, USA, 39 (1978).

[6] R. F. Bunshah, Deposition technologies for films and coatings, Noyes Pub., Ch., 234 (1982).

[7] K. M. Moon, H. R. Cho, T. Y. Kang, M. H. Lee and Y. U. Kim, J. Korean Soc. of Mar. Eng., 31, 173 (2007).

[8] H. S, Ingham and A. P Shepart, Flame Spray Handbook, Metco Inc., vol. Ⅲ, (1985).

[9] M. H. Regina, P. Rodriguez, S. C. Roman and U. Schereiner, Surface and Coating Tec., 202, 172 (2007).

[10] J. Wilden, H. Frank, J. P. Bergman, Surface and Coating Tec., 201, 1962 (2006).

[11] B. Gerard, Surface and Coationg Tech., 201, 2028 (2006).

[12] W. B. Choi, L. L, Yluzin, H. J. Park, J. of Acta Materialia, 55, 857 (2007).

[13] R. S.C. Pendes, S. C. Amico, and C. M. D'oliveira, Surface and Coating Tec., 200, 3049 (2006).

[14] J. V. Muylder and M. Pourbaix, Atlas of Electrochemical Equilibria in Aqueous Solution, Ed. by M. Pourbaix, Rergomon press.

Fetching data from Crossref.
This may take some time to load.