Surface roughness profile and its effect on coating adhesion and corrosion protection: A review

被引:165
作者
Croll, S. G. [1 ]
机构
[1] North Dakota State Univ, Dept Coatings & Polymer Mat, Fargo, ND 58105 USA
关键词
Adhesion; Corrosion; Roughness; Mode II; Surface gradient; Developed area; CATHODIC DELAMINATION; POLYMERIC COATINGS; CRACK-GROWTH; FRACTAL DIMENSION; ORGANIC COATINGS; STEEL; INTERFACE; ENERGY; MORPHOLOGY; PAINT;
D O I
10.1016/j.porgcoat.2020.105847
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Specifications for coating many forms of infrastructure and equipment include abrasive cleaning, then measurement of the surface profile and adhesion on the assumption that they are linked to long term prevention of corrosion undercutting the coating. Studies find no quantitative connection between adhesion and corrosion protection, but many believe in a link. Although corrosion is a molecular phenomenon that starts at the interface, adhesion values are measured by a device attached to the coating at some distance from the interface, so it is difficult to directly connect corrosion with adhesion. Understanding how adhesion and the spread of corrosion under the coating are influenced by surface roughness entails surface metrology, fracture mechanics, surface energy and viscoelasticity. The impact of surface roughness cannot be not determined by a simple, or single, statistical parameter for variation in substrate height variation. Conventional "pull-off" adhesion testing does not characterize coating-metal interactions that might prevent water and electrolyte causing corrosion, they must be determined otherwise. The additional surface area created by the abrasion increases the number of adhesive interactions and the local slope of the surface engages Mode II loading that increases the force that the interface can support. Both these surface attributes may also slow the spread of corrosion across the interface. In order to prevent the diffusion of water and electrolyte across the interface, a coating should form well at the interface, be tough and as hydrophobic as realistically possible.
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页数:14
相关论文
共 107 条
  • [1] Abbott S., 2015, Adhesion Science: Principles and Practice
  • [2] An overview of degradable and biodegradable polyolefins
    Ammala, Anne
    Bateman, Stuart
    Dean, Katherine
    Petinakis, Eustathios
    Sangwan, Parveen
    Wong, Susan
    Yuan, Qiang
    Yu, Long
    Patrick, Colin
    Leong, K. H.
    [J]. PROGRESS IN POLYMER SCIENCE, 2011, 36 (08) : 1015 - 1049
  • [3] ANDREWS EH, 1973, PROC R SOC LON SER-A, V332, P385, DOI 10.1098/rspa.1973.0032
  • [4] [Anonymous], 2010, B4612009 ASME
  • [5] [Anonymous], 2020, DEFINITION WHAT DOES
  • [6] [Anonymous], 2011, D3363052011E2 ASTM A
  • [7] [Anonymous], 1997, 4287 ISO
  • [8] [Anonymous], 2004, J. Prot. Coat. Linings
  • [9] ELASTIC-PLASTIC ANALYSIS OF CRACKS ON BIMATERIAL INTERFACES - INTERFACES WITH STRUCTURE
    ASARO, RJ
    ODOWD, NP
    SHIH, CF
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 162 (1-2): : 175 - 192
  • [10] ASTM, 2017, D335917 ASTM ASTM IN