As primary cause of a coating failure, surface preparation is a crucial, but often overlooked step of coating application. Coatings require a clean substrate to some degree and a surface profile to ensure maximum adhesion strength. But do all profiles of the same depth provide the same coating adhesion? The USACE Paint Technology Technical Center of Expertise examines the benefits of utilizing alternative blasting media that can provide advanced adhesion through the use of grit composed of variated material and size. Laboratory studies will be used to illustrate this technology on steel test panels coated with epoxy and vinyl resin military systems. Surface morphology and surface area calculations, and results from performance testing, including cyclic corrosion testing, will be presented and compared to conventional blasting material along with a cost savings assessment.

Subject
Abrasive blasting, Test methods, Steel surfaces, Coatings, Materials, Substrates, Steel substrates, Surface preparation, Substrate surfaces, Garnet, Coating adhesion, Steel, Surface profile
Keywords:
Surface Preparation, Abrasive Blasting
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2023
GOV
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