Durability of powder-coated hot-dip galvanized steel

Springer Science and Business Media LLC - Tập 74 - Trang 43-54 - 2002
H. G. J. M. Verstappen1, S. J. van Susteren1, W. J. van Ooij2
1Weert, The Netherlands
2University of Cincinnati/USA

Tóm tắt

In this study, the quality and durability of powder-coated hot-dip galvanized products have been investigated. Standard steel coupons hot-dip galvanized in conventional and delta (i.e., high temperature) conditions were coated with powder paint systems or a high quality solvent-based system and then subjected to a wide range of test methods representing mild or highly aggressive exposure conditions. Additional variables in the project were the silicon content of the steel and the treatment prior to painting. The use of delta-galvanized steel as a base for painting offers a number of advantages such as much greater hardness and improved paint adhesion. Maximum corrosion protection is observed if the galvanized base is treated with chromate and sequentially powder coated with an epoxy primer followed by a polyester topcoat.

Tài liệu tham khảo

van Oeteren, K.A.,Feuerverzinkung und Duplexsystem, Band 423, Kontakt & Studium Oberflächentechnik, Expert verslag, Renningen-Halmsheim, 1993. van Oeteren, K.A.,Feuerverzinkung plus Beschichtung = Duplex-System, Bauverslag, Weisbaden, 1983. Porter F.C.,Corrosion Resistance of Zinc and Zinc Alloys, Marcel Dekker, Inc., New York, 1994. Porter, F.C.,Zinc Handbook, Properties, Processing and Use in Design, Marcel Dekker, Inc., New York, 1991. van Ooij, W.J. and Verma, A.R.B.,Surface and Coatings Techn., 89, 143 (1997). van Ooij, W.J. and Verma, A.R.B.,Surface and Coatings Techn., 89, 132 (1997). Chen, H.J.,EuroCoat., 12, 948 (1994). Cohen, S.M., “Electrochemical Impedance Spectroscopy Evaluation of Various Aluminum Pretreatments Painted with Epoxy Primer,”Journal of Coatings Technology,68, No. 859, 73 (1996). van Eijnsbergen,J.F.H.,Duplex Systems, Hot-Dip Galvanizing Plus Painting, Elsevier, Amsterdam, 1994. Haynes, G.S. and Baboian, R., ASTM Publication, Code number 04-866000-27 (1985). Kendig, M. and Jeanjaquet, S., “Rapid Electrochemical Assessment of Paint (REAP),”Journal of Coatings Technology,68, No. 863, 39 (1996). Machu, W. and Schiffman, L., Archiv. f.d. Eisenhüttenwesen, 37, 679 (1966, 8). Machu, W. and Schiffman, L., Archiv. f.d. Eisenhüttenwesen, 37, 729 (1966, 9). Machu, W. and Schiffman, L., Archiv. f.d. Eisenhüttenwesen, 37, 829 (1966, 10). Machu, W., Schiffman, L., and Hudson, J.C.,Metalloberfläche, 22, 274 (1968, 9). Mansfeld, F., Lin, S., Kim, S., and Shin, H.,J. Electrochem. Soc., 137, 78 (1990). Mansfeld, F. and Chen, C.,Corrosion Science, 39, 1075 (1997). Mansfeld, F.,J. Appl. Electrochem., 25, 187 (1995). Murray, J.N.,Prog. Org. Coat., 30, 225 (1997). Murray, J.N.,Prog. Org. Coat., 31, 255 (1997). Murray, J.N.,Prog. Org. Coat., 31, 375 (1997). Tait, W.S.,An Introduction to Electrochemical Corrosion Testing for Practising Engineers and Scientists, PairODocs Publications, 1994. van Ooij, W.J. and Subramanian, V.,Surf. Engineering, 15, 2 (1999). van Ooij, W.J. and Sundararajan, G.P.,J. Corrosion Science and Engineering (e-journal), 2, paper 14 (2001). van Ooij, W.J.,J. of Adh. Sci. Techn., Vol. 7, No. 8, 897 (1993).