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Investigation of blister formed on coated mild steel using scanning Kelvin Probe

Sahir, Zalilah Sharer and Sykes, John Malcolm (2011) Investigation of blister formed on coated mild steel using scanning Kelvin Probe. Jurnal Teknologi (Sciences and Engineering), 56 (1). pp. 139-154. ISSN 0127-9696

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Abstract

The degradation of a coated metal in term of the area underneath a blister has been studied after being immersed in 3% sodium chlorida and 3% ammonium chloride solution. Scanning Kelvin probe (SKP) was used to map electrochemical potentials, identifying anodic and cathodic regions underneath a blister and the surrounding coating. For blisters formed on coated panel immersed in sodium chlorida solution, SKP potential map reveals that the blister has formed at a cathode due to alkali but anodes form nearby (not remote). Meanwhile SKP potential map for blister formed on coated panel in 3% ammonium chloride reveals the presence of cathodic regions within the anodic areas.

Item Type:Article
Uncontrolled Keywords:coated mild steel
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Petroleum and Renewable Energy Engineering
ID Code:45007
Deposited By: Haliza Zainal
Deposited On:27 Apr 2015 04:50
Last Modified:01 Nov 2017 04:17

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