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08001 Determine Usable Coating Systems - Results of Laboratory Tests Versus Long Term Trials in Nature

Product Number: 51300-08001-SG
ISBN: 08001 2008 CP
Author: Gunter Binder
Publication Date: 2008
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$20.00
$20.00
Accelerated laboratory tests are commonly used for judging the performance of coatings for corrosion protection. Assessment could be done by comparison of systems or measuring the damages after the test, mainly the rusting on the scratch, and checked against fixed boundary values. In this study common test methods like salt spray (ISO 7253), as well as cyclic test (NORSOK M-501, ISO 20340) were checked and compared to each other by statistical calculations. By that any relationship between the different tests were figured out. The cycle test according ISO 20340 for offshore structures is relatively new and experiences in practice are limited. Immediately the test procedure indicates that results using this method that only systems with zinc-dust primers passed the test and many well established coating systems failed. The statistical calculations in this work showed, that the test procedure can be shortened by nearly a factor of two to reach comparable results to other accelerated tests and by that time and money will be saved.
Accelerated laboratory tests are commonly used for judging the performance of coatings for corrosion protection. Assessment could be done by comparison of systems or measuring the damages after the test, mainly the rusting on the scratch, and checked against fixed boundary values. In this study common test methods like salt spray (ISO 7253), as well as cyclic test (NORSOK M-501, ISO 20340) were checked and compared to each other by statistical calculations. By that any relationship between the different tests were figured out. The cycle test according ISO 20340 for offshore structures is relatively new and experiences in practice are limited. Immediately the test procedure indicates that results using this method that only systems with zinc-dust primers passed the test and many well established coating systems failed. The statistical calculations in this work showed, that the test procedure can be shortened by nearly a factor of two to reach comparable results to other accelerated tests and by that time and money will be saved.
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08015 Waterborne Coatings - Results of 6 years Offshore Testing

Product Number: 51300-08015-SG
ISBN: 08015 2008 CP
Author: Per G. Lunde and Jan Ivar Skar
Publication Date: 2008
$20.00