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The effects of three blasting methods utilised for surface preparation upon the behavior of five organic coating systems are investigated. The blasting methods include dry blast cleaning, UHP and UHPAB. It is shown that pull-off strength, pull-off failure mode, and delamination are significantly affected by the surface preparation method.
The effects of three blasting methods utilised for surface preparation upon the behavior of five organic coating systems are investigated. The blasting methods include dry blast cleaning, UHP and UHPAB. It is shown that pull-off strength, pull-off failure mode, and delamination are significantly affected by the surface preparation method. A rather complex relationship between substrate properties, namely roughness, visual cleanliness and grit contamination, and coating performance exists. Certain coating systems are sensitive to grit contamination, and these coatings show very bad performance if applied over dry blast cleaned steel substrates if no fine cleaning was performed.
This presentation will offer best practices maintenance advice to the user of Abrasive Blasting Equipment, providing a ready-made checklist to guide the user through an operating year.
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Nonskid coatings are typically used on the flight deck of aircraft carriers and high traffic areas of a ships’ deck. At this time, there are only a few approved materials available for use as nonskid coating for landing areas onboard US Navy vessels. Nonskid coating materials with improved performance, lower cost, and decreased maintenance are currently in development.
Current coating practice requires the thickness of anti-corrosion organic coatings to be over 250 for immersion parts of ships and offshore structures and the protective performance of these coatings has been evaluated by destructive and qualitative analysis. Recently, Electrochemical Impedance Spectroscopy (EIS) method has been employed, as an alternative, to evaluate corrosion resistance of organic coatings. This method is characterized as being nondestructive, reproducible, and quantitative in evaluating aging of organic coatings.