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PROPERTIES OF CALCAREOUS DEPOSITS FORMED ON METAL SURFACE IN SEA WATER UNDER CATHODIC PROTECTION AT DIFFERENT POTENTIALS AND CURRENT DENSITIES
Title
THE PROPERTIES OF CALCAREOUS DEPOSITS FORMED ON METAL SURFACE IN SEA WATER UNDER CATHODIC PROTECTION AT DIFFERENT POTENTIALS AND CURRENT DENSITIES.
Creator
Luo, Jiunn-Shyong, Florida Atlantic University, Lee, Rupert U., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
The influence of impressed current density and potential upon the nature of calcareous deposits formed . on a cathodic steel surface has been investigated. The experiments included potentiostatic, galvanostatic and mixed mode combined galvanostatic and potentiostatic techniques for affecting polarization. Specific attention was focused upon the thickness, morphology and composition of the deposits. A Mg 2+ depletion model has been developed as a possible explanation for the nucleation and...
Show moreThe influence of impressed current density and potential upon the nature of calcareous deposits formed . on a cathodic steel surface has been investigated. The experiments included potentiostatic, galvanostatic and mixed mode combined galvanostatic and potentiostatic techniques for affecting polarization. Specific attention was focused upon the thickness, morphology and composition of the deposits. A Mg 2+ depletion model has been developed as a possible explanation for the nucleation and growth behavior of calcareous deposits formed under combined mode operation.
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Date Issued
1987
PURL
http://purl.flvc.org/fcla/dt/14376
Subject Headings
Metals--Cathodic protection, Chemical oceanography, Calcium
Format
Document (PDF)
Mathematical modeling of the pit initiation process
Title
Mathematical modeling of the pit initiation process.
Creator
Kappukattil, Lizamma Joseph., Florida Atlantic University, Lee, Rupert U., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
The potential at which pitting corrosion begins under anodic polarization is a function of the environmental parameters. Determination of this characteristic potential enables prediction of pitting susceptibility under specific environmental conditions. The pitting potentials were determined experimentally for AISI 304 stainless steel for different values of chloride ion concentration, sulphate ion concentration, temperature and solution pH. A factorial design technique was employed to study...
Show moreThe potential at which pitting corrosion begins under anodic polarization is a function of the environmental parameters. Determination of this characteristic potential enables prediction of pitting susceptibility under specific environmental conditions. The pitting potentials were determined experimentally for AISI 304 stainless steel for different values of chloride ion concentration, sulphate ion concentration, temperature and solution pH. A factorial design technique was employed to study the individual and interaction effects of parameters in order to investigate the multi-faceted nature of the pitting process. An empirical model was developed based on the result of the factorial analysis. The model emphasizes the fact that the pit nucleation process involves interrelated processes, and that the parameters behave differently with respect to each process.
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Date Issued
1989
PURL
http://purl.flvc.org/fcla/dt/14548
Subject Headings
Corrosion and anti-corrosives--Mathematical models, Metals--Corrosion fatigue--Mathematical models
Format
Document (PDF)