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    STP1086

    Long-Term Weathering of Organic and Inorganic Coatings on Steel and on Aluminum

    Published: 01 January 1990


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    Abstract

    This study reports on the protection offered to steel and aluminum by selected formulations of fluidized-bed-applied vinyl, epoxy, polyester, ethylene-acrylic acid copolymer, and nylon powder coatings; solvent-borne vinyl, epoxy and chlorinated rubber coatings; ceramic coatings; hot-dipped and flame-sprayed zinc and aluminum coatings; and flame-sprayed 67-33 zinc-aluminum coatings. Most of the coatings fully protected the metals when exposed for ten years to a polluting industrial atmosphere. Some of the solvent-borne organic and flame-sprayed metallic coatings protected the metals during eleven years on a North Carolina ocean beach. Some of the flame-sprayed metallic coatings protected the metals during twelve years of Florida saltwater and mud exposure. The aluminum substrate panels retained their structural integrity whether exposed with or without coatings.

    Keywords:

    organic coatings, inorganic coatings, fluidized-bed-applied coatings, ceramic coatings, flame-sprayed aluminum and zinc coatings, hot-dipped aluminum and zinc (galva-nized) coatings, solvent-borne coatings, Resistance of coated steel and aluminum to an industrial atmosphere, to an ocean beach atmosphere, to seawater, to burial in salt sandy-mud


    Author Information:

    Lundberg, CV
    AT&T Bell Laboratories, Murray Hill, NJ


    Committee/Subcommittee: G01.04

    DOI: 10.1520/STP26105S