Mathematical model for cathodic delamination using a porosity-pH relationship

被引:27
作者
Allahar, Kerry N.
Orazem, Mark E. [1 ]
Ogle, Kevin
机构
[1] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA
[2] IRSID, F-57214 Maizieres Les Metz, France
关键词
modelling studies; oxygen reduction; paint coatings;
D O I
10.1016/j.corsci.2007.03.024
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A mathematical model was developed to simulate the transient propagation of the cathodic delamination on a coated metal. The model employed porosity and the polarization kinetics at the metal-coating interface that were assumed to be dependent on the local pH. The simulations provided qualitative agreement with published experimental results for a zinc coated system characterized by extremely rapid cathodic delamination. The mathematical model described in this work provides a foundation on which more sophisticated models can be constructed. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3638 / 3658
页数:21
相关论文
共 16 条
[1]  
ALLAHAR K, 2003, THESIS U FLORIDA GAI
[2]   The delamination of polymeric coatings from electrogalvanized steel -: a mechanistic approach.: Part 2:: delamination from a defect down to steel [J].
Fürbeth, W ;
Stratmann, M .
CORROSION SCIENCE, 2001, 43 (02) :229-241
[3]   The delamination of polymeric coatings from electrogalvanised steel -: a mechanistic approach.: Part 1:: delamination from a defect with intact zinc layer [J].
Fürbeth, W ;
Stratmann, M .
CORROSION SCIENCE, 2001, 43 (02) :207-227
[4]   The delamination of polymeric coatings from electrogalvanized steel -: a mechanistic approach.: Part 3:: delamination kinetics and influence of CO2 [J].
Fürbeth, W ;
Stratmann, M .
CORROSION SCIENCE, 2001, 43 (02) :243-254
[5]   CORROSION OF PAINTED METALS - A REVIEW [J].
LEIDHEISER, H .
CORROSION, 1982, 38 (07) :374-383
[6]  
Leng A, 1999, CORROS SCI, V41, P547, DOI 10.1016/S0010-938X(98)00166-8
[7]  
Leng A, 1999, CORROS SCI, V41, P579, DOI 10.1016/S0010-938X(98)00167-X
[8]  
Leng A, 1999, CORROS SCI, V41, P599, DOI 10.1016/S0010-938X(98)00168-1
[9]  
NEWMAN JS, 1991, ELECTROCHEMICAL ENG
[10]   A MATHEMATICAL-MODEL OF THE INITIATION OF CREVICE CORROSION IN METALS [J].
SHARLAND, SM .
CORROSION SCIENCE, 1992, 33 (02) :183-201