Electrochemical Evaluation on Corrosion Resistance of Anti-corrosive Paints
3
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
It has been observed that coated steel structures are rapidly deteriorated than designed lifetime due to acid rain caused by air pollution etc.. Therefore improvement of corrosion resistance of anti-corrosive paint is very important in terms of safety and economic point of view. In this study corrosion resistance for five kinds of anti-corrosive paints including acryl, fluorine and epoxy resin series were investigated with electrochemical methods such as corrosion potential, polarization curves, impedance and cyclic voltammogram measurements etc.. There were somewhat good relationships between values measured by electrochemical methods such as corrosion current density obtained by cathodic and anodic polarization curves, value of impedance estimated with AC impedance, and polarization resistance on the cyclic voltammogram, for example, corrosion current density was decreased with increasing of values of impedance and polarization resistance on the cyclic voltammogram. However their relationships between corrosion current density and corrosion potential were not well coincided each other. Consequently it is considered that although a corrosion potential of F101 of fuoric resin series shifted to negative direction than other anti-corrosive paints, its corrosion resistance, indicating on the cathodic and anodic polarization curves, AC impedance curves and cyclic voltammogram, was the most superior to other paints, whereas A100 containing arcylic resin showed a relatively poor corrosion resistance compared to other paints.
Abstract
It has been observed that coated steel structures are rapidly deteriorated than designed lifetime due to acid rain caused by air pollution etc.. Therefore improvement of corrosion resistance of anti-corrosive paint is very important in terms of safety and economic point of view. In this study corrosion resistance for five kinds of anti-corrosive paints including acryl, fluorine and epoxy resin series were investigated with electrochemical methods such as corrosion potential, polarization curves, impedance and cyclic voltammogram measurements etc.. There were somewhat good relationships between values measured by electrochemical methods such as corrosion current density obtained by cathodic and anodic polarization curves, value of impedance estimated with AC impedance, and polarization resistance on the cyclic voltammogram, for example, corrosion current density was decreased with increasing of values of impedance and polarization resistance on the cyclic voltammogram. However their relationships between corrosion current density and corrosion potential were not well coincided each other. Consequently it is considered that although a corrosion potential of F101 of fuoric resin series shifted to negative direction than other anti-corrosive paints, its corrosion resistance, indicating on the cathodic and anodic polarization curves, AC impedance curves and cyclic voltammogram, was the most superior to other paints, whereas A100 containing arcylic resin showed a relatively poor corrosion resistance compared to other paints.
참고문헌 (14)
- P. Cicognami, "Application of the boundary-element method to offshore cathodic protection modeling", Journal of .Electrochem. Soc., 137(6), pp.1689~1695 (1990)
- K.G. Compton, "Factor involved in corrosion of lead cable sheath", CORROSION, 17, pp.115~118 (1961)
- P.O. Gartland, "Effect of flow on the cathodic protection of a steel cylinder in sea water", CORROSION, 40(3), pp.127~133 (1984)
- M. Hiramatsi, "Current trend in development of corrosion protective plating", Zairo-to-Kankyo, 45(1), pp.33~41 (1996)
- D.A. Jones, "Electrochemical corrosion studies on zinc-coated steel", CORROSION, 41(6), pp.357~362 (1985)
- J. Newman, "Cathodic protection with parrel cylinders", Journal of Electrochem. Soc., 130(12), pp.3554~3559 (1991)
- U. Steinsmo, "Factors limiting the cathodic current on painted steel", Journal of Electrochem.Soc., 136(12), pp.3588~3594 (1989)
- U. Steinsmo, "The effect of the dry film thickness, temperature and electrolyte on the cathodic current of painted steel", Journal of Electrochem.Soc., 136(12), pp.3383~3587 (1989)
- Report of corrosion damage research, "Japan Society of Corrosion Control Technology", 15~ (1977)
- Corrosion protection and repair manual for port and harbor steel structures, "The Overseas Coastal Area Development Institute of Japan", 27~96 (1998)
- J.D. Talati, "Maximum utilization current density", CORROSION, 40(2), pp.88~91 (1984)
- 성호진, "중방식도료의 내식성에 관한 전기화학적 평가", 한국마린엔지니어링학회지, 29(5), pp.519~525 (2005), 한국마린엔지니어링학회
- 문경만, "중방식 도료의 내식성에 미치는 첨가제의 영향", 한국해양공학회지, 21(3), pp.65~70 (2007), 한국해양공학회
- Painting industrial chemistry, "J.G. Jang", Dong yui Industrial College, 177~178 (2003)