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Erosion Resistance Testing for Abrasion and Cavitation Resistant Coatings

Erosion Resistance Testing for Abrasion and Cavitation Resistant Coatings
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Cavitation erosion of the rudder has been a serious problem in the high-speed container ship industry. It is well known that the lifetime of a conventional coating system is about 6 months against cavitation bubble collapse. Although STS 316L stainless steel has been applied to prevent such a problem, there are several drawbacks such as high repair cost and poor workability. 

Product Number: 41215-910-SG
Author: Hee-Baek Lee, Chung-Seo Park, Seong-Mo Son, Kyung-Jin Park, Sang-Sik Park**
Publication Date: 2015
Industries: Corrosion Monitoring and Control , Coatings , Coatings and Linings
$0.00
$20.00
$20.00

Cavitation erosion of the rudder has been a serious problem in the high-speed container ship industry. It is well known that the lifetime of a conventional coating system is about 6 months against cavitation bubble collapse. Although STS 316L stainless steel has been applied to prevent such a problem, there are several drawbacks such as high repair cost and poor workability. In this study, a series of cavitation erosion resistance tests, for several types of coatings, were performed to identify and prioritize among coatings. A useful test method, which can more effectively simulate the cavitation characteristics, was also selected. The result of this study showed that an unsaturated polyester coating with glass flake had the best cavitation erosion resistance among the candidates. The vibratory apparatus test method was more suitable to evaluate the erosion resistance of organic coatings because it had better reproducibility and sensitivity as well as uniform surface erosion characteristics by cavity contact compared to the cavitating liquid jet test method.

Cavitation erosion of the rudder has been a serious problem in the high-speed container ship industry. It is well known that the lifetime of a conventional coating system is about 6 months against cavitation bubble collapse. Although STS 316L stainless steel has been applied to prevent such a problem, there are several drawbacks such as high repair cost and poor workability. In this study, a series of cavitation erosion resistance tests, for several types of coatings, were performed to identify and prioritize among coatings. A useful test method, which can more effectively simulate the cavitation characteristics, was also selected. The result of this study showed that an unsaturated polyester coating with glass flake had the best cavitation erosion resistance among the candidates. The vibratory apparatus test method was more suitable to evaluate the erosion resistance of organic coatings because it had better reproducibility and sensitivity as well as uniform surface erosion characteristics by cavity contact compared to the cavitating liquid jet test method.

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