Effects of residual white rust of inorganic zinc silicate primer on corrosion protection of epoxy-coated carbon steel

MinYoung Shon

Journal of Industrial and Engineering Chemistry, Vol.16, No.4, 523-530, July, 2010

DOI10.1016/j.jiec.2010.03.029 Export Citation

Effects of residual white rust of inorganic zinc silicate primer on corrosion protection of epoxy-coated carbon steel

MinYoung Shon^†

Coating and Corrosion Research Department, Samsung Heavy Industries, Jangpyung-ri 530, Shinhyun-up, Geoje, 656-710, Republic of Korea

E-mail:

Inorganic zinc silicate primer is widely used in shipbuilding as a preconstruction primer (or shop primer) on steel plates; however, white rust of zinc is formed on inorganic-zinc-silicate-coated steel surfaces exposed to outdoor conditions such as rain and humidity. In this study, effects of residual white rust of inorganic zinc silicate primer on corrosion protection of epoxy-coated carbon steel were examined by water ballast simulation and condensation chamber tests. Pull-off adhesion, blistering, and cathodic disbondment tests were also performed for the same purpose. Test results clearly indicated that the residual white rust did not affect the corrosion protection when the steel surface was treated with light to heavy sweep blasting.

Keywords:Shop primer;White rust;Zinc;Pull-off adhesion;Cathodic disbondment

[References]

Munger CG, Vincent LD, Corrosion Prevention by Protective Coatings, 2nd ed., NACE (1999)
Brodd RJ, Leger VE, Bard AJ (Eds.), Encyclopedia of Electrochemistry of the Elements, vol. 6, Marcel Decker, New York, 35 (1976)
Ross TK, Lingard J, Trans. Inst. Metal Finish., 40, 186 (1983)
Mayne JEO, Evans UR, J. Soc. Chem., Ind. Rev., 22, 109 (1944)
Mayne JEO, J. Soc. Chem. Ind., 66, 93 (1947)
Knudsen OO, Steinsmo U, Bjodal M, Prog. Org. Coat., 54, 224 (2005)
Ross TK, Lingard J, Trans. Inst. Metal Finish., 40, 186 (1963)
Newton DS, Sampson FG, J. Oil Col. Chem. Assos., 48, 382 (1965)
Theiler F, Corros. Sci., 14, 405 (1974)
Ross TK, Wolstenholme J, Corros. Sci., 17, 341 (1977)
Szauer T, Brandt A, J. Oil Col. Chem. Assos., 67, 13 (1984)
Lndovist SA, Meszaros L, Sevenson L, J. Oil Col. Chem. Assos., 68, 10 (1985)
Feliu S, Barajas R, Bastidas JM, Morcillo M, J. Coat. Technol., 61, 63 (1989)
Feliu S, Barajas R, Bastidas JM, Morcillo M, J. Coat. Technol., 61, 71 (1989)
Zhang XG, Corrosion and Electrochemistry of Zinc, PlenumPress, NewYork, 241 (1996)
Videm K, Myrdal R, The Electrochemical behavior of Steel in Concrete and How to Evaluate the Corrosion Rate, National Association of Corrosion Engineers, Corrosion, 96, 348 (1996)
Bird CE, Mater. Perform., 16, 14 (1977)
Sziraki L, Szocs E, Pilbath Z, Papp K, Kalman E, Electrochim. Acta, 46(24-25), 3743 (2001)
Annex 1, Resolution MSC.215(82), Performance standard for protective coatings for dedicated seawater water ballast tanks in all types of ships and double side skin spaces of bulk carriers, 8 December (2006)
ISO 6270-1:1998, Paints and varnishes . Determination of resistance to humidity . Part 1. Continuous condensation.
ISO 4628/2:2003, Paints and varnishes . Evaluation of degradation of coatings -Designation of quantity and size of defects, and of intensity of uniform changes in appearance . Part 2 & Part 3.
ISO 4624:2002, Pull-off test for adhesion.
Wiggle RR, Smith AG, Petrocelli JV, J. Paint Technol., 40, 174 (1968)
Leidheiser H, Kendig MW, Corrosion., 32, 69 (1976)
Smith AG, Dickie RA, Ind. Eng. Chem. Prod. Res. Dev., 17, 42 (1978)
Koehler EL, Corrosion., 33, 209 (1977)
Ritter JV, J. Coat. Technol., 54, 51 (1982)
Koehler EL, Corrosion., 40, 5 (1984)
Recommended Practice, DNV-RP-B401, Cathodic Protection Design, January (2005)
Forsgren A, Corrosion Control Through Organic Coatings, CRC Press, 106 (1996)

[1] Munger CG, Vincent LD, Corrosion Prevention by Protective Coatings, 2nd ed., NACE (1999)

[2] Brodd RJ, Leger VE, Bard AJ (Eds.), Encyclopedia of Electrochemistry of the Elements, vol. 6, Marcel Decker, New York, 35 (1976)

[3] Ross TK, Lingard J, Trans. Inst. Metal Finish., 40, 186 (1983)

[4] Mayne JEO, Evans UR, J. Soc. Chem., Ind. Rev., 22, 109 (1944)

[5] Mayne JEO, J. Soc. Chem. Ind., 66, 93 (1947)

[6] Knudsen OO, Steinsmo U, Bjodal M, Prog. Org. Coat., 54, 224 (2005)

[7] Ross TK, Lingard J, Trans. Inst. Metal Finish., 40, 186 (1963)

[8] Newton DS, Sampson FG, J. Oil Col. Chem. Assos., 48, 382 (1965)

[9] Theiler F, Corros. Sci., 14, 405 (1974)

[10] Ross TK, Wolstenholme J, Corros. Sci., 17, 341 (1977)

[11] Szauer T, Brandt A, J. Oil Col. Chem. Assos., 67, 13 (1984)

[12] Lndovist SA, Meszaros L, Sevenson L, J. Oil Col. Chem. Assos., 68, 10 (1985)

[13] Feliu S, Barajas R, Bastidas JM, Morcillo M, J. Coat. Technol., 61, 63 (1989)

[14] Feliu S, Barajas R, Bastidas JM, Morcillo M, J. Coat. Technol., 61, 71 (1989)

[15] Zhang XG, Corrosion and Electrochemistry of Zinc, PlenumPress, NewYork, 241 (1996)

[16] Videm K, Myrdal R, The Electrochemical behavior of Steel in Concrete and How to Evaluate the Corrosion Rate, National Association of Corrosion Engineers, Corrosion, 96, 348 (1996)

[17] Bird CE, Mater. Perform., 16, 14 (1977)

[18] Sziraki L, Szocs E, Pilbath Z, Papp K, Kalman E, Electrochim. Acta, 46(24-25), 3743 (2001)

[19] Annex 1, Resolution MSC.215(82), Performance standard for protective coatings for dedicated seawater water ballast tanks in all types of ships and double side skin spaces of bulk carriers, 8 December (2006)

[20] ISO 6270-1:1998, Paints and varnishes . Determination of resistance to humidity . Part 1. Continuous condensation.

[21] ISO 4628/2:2003, Paints and varnishes . Evaluation of degradation of coatings -Designation of quantity and size of defects, and of intensity of uniform changes in appearance . Part 2 & Part 3.

[22] ISO 4624:2002, Pull-off test for adhesion.

[23] Wiggle RR, Smith AG, Petrocelli JV, J. Paint Technol., 40, 174 (1968)

[24] Leidheiser H, Kendig MW, Corrosion., 32, 69 (1976)

[25] Smith AG, Dickie RA, Ind. Eng. Chem. Prod. Res. Dev., 17, 42 (1978)

[26] Koehler EL, Corrosion., 33, 209 (1977)

[27] Ritter JV, J. Coat. Technol., 54, 51 (1982)

[28] Koehler EL, Corrosion., 40, 5 (1984)

[29] Recommended Practice, DNV-RP-B401, Cathodic Protection Design, January (2005)

[30] Forsgren A, Corrosion Control Through Organic Coatings, CRC Press, 106 (1996)