Electrochemical analysis of silane incorporated sodium dodecylbenzene sulphonate: zinc sulphate pre-treatment on mild steel and its effect on epoxy coating performance

被引：0
作者：
Ismail, I. [1 ]
Harun, M. K. [1 ]
Yahya, M. Z. A. [2 ]
机构：
[1] Univ Teknol MARA, Fac Appl Sci, Electrochem & Corros Sci Lab, Shah Alam 40450, Selangor, Malaysia
[2] Univ Pertahanan Nasl Malaysia, Fac Def Sci & Technol, Kuala Lumpur, Malaysia
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2022年 / 57卷 / 03期
关键词：
Silane film; corrosion inhibitors; corrosion resistance; adhesion; cathodic delamination; anodic delamination; CORROSION PROTECTION PROPERTIES; ORGANIC COATINGS; RUBBER/METAL COMPOSITES; INHIBITION SYNERGISM; ADHESION PROPERTIES; FILMS; DISBONDMENT; RESISTANCE; CHLORIDE; METALS;
D O I：
10.1080/1478422X.2021.2016089
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Variation of surface chemical energy and its effects on adhesion strength and corrosion protection properties of epoxy coatings of mild steel substrates were studied. Results indicated that pre-treatment with a mixture of 3-glycidoxypropyltrimethoxysilane, sodium dodecylbenzene sulphonates and zinc sulphate inhibitors enhanced the corrosion protection properties of epoxy coating when compared to untreated substrates. The formation of a compact insoluble layer of zinc hydroxide/oxide together with SDBS complex on the mild steel surface was found to affect the adhesion properties and resistance towards cathodic/anodic delamination of epoxy coating. This was primarily caused by the formation of strong interfacial interaction and increased in surface passivation. The findings suggested, adhesion alone plays a little part in preventing underfilm corrosion. The underfilm corrosion activities are determined by surface passivity towards corrosion reactions.
引用
收藏
页码：204 / 213
页数：10
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