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    Acid Resisting Properties of Porcelain Enamels

    Published: 01 January 1954

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    In considering acid attack on ceramic coatings, it should be pointed out that the degree of attack is a relative consideration. Just as it is meaningless to say that a material is heat resistant, so it is equally indefinite to classify a ceramic coating as acid resistant without further elaboration. Perhaps a good rule of procedure in considering any type of coating or finish, whether a ceramic type or a nonceramic type, is to adopt the premise that every coating is slightly soluble. Assuming that there is a solubility problem, however slight, it naturally follows that the requirements of the application under consideration should be studied to determine just what the conditions of exposure are, how much the conditions affect a given coating, and whether the established amount of attack for this exposure can be tolerated. To give point to the above statements it might be well to review a few types of exposures which illustrate different requirements in resistance to acid attack.

    Author Information:

    Wilson, Harold C.
    Chief Chemist, Vitreous Steel Products Co., Nappanee, Ind.

    Committee/Subcommittee: B08.12

    DOI: 10.1520/STP47968S