Progress of Corrosion in Painted Steel Plates in a Sea Water Environment : Inspection of Plates in Ballast Tanks of Actual Ships and in Dry/Wet Alternating Tests

概要

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The corrosion of internal structures of ships is a complex issue which is influenced by many variables. Numerous reports have been published which offer guidance on protecting structural members from corrosion and wear. Such guidance, which is controllable within acceptable criteria, can go a long way towards reducing corrosion. For more rational and precise corrosion life assessment for long-time use, many research plans have been formulated and further research is underway. The aim of this paper is to examine the electrochemical properties in dry/wet alternating tests in order to develop a general understanding of various kinds of corrosion tests and to consider the relation between actual ship hull corrosion and the results of dry/wet alternating tests. The acceleration rates of dry/wet test as compared with actual hull corrosion, the electrochemical properties from the dry/wet test, and the effects of some paint specifications on the progress of corrosion are clarified in this paper.
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