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Variables Involved in Accelerated Alkali Resistance Testing of Porcelain Enamels
Author(s) -
COX JOHN E.
Publication year - 1958
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1958.tb12928.x
Subject(s) - sodium hydroxide , sodium hypochlorite , bleach , alkali metal , pyrophosphate , calcium hydroxide , sodium , chemistry , materials science , metallurgy , organic chemistry , biochemistry , enzyme
Alkali test data were obtained for experimental and commercial porcelain enamels for test solutions of sodium hydroxide, sodium pyrophosphate, and commercial detergents. The effects of variations in volume and strength of solutions, time and temperature of testing, and the addition of bleaching agent were studied. The best correlation to detergent action was obtained with 1% sodium pyrophosphate. Results for sodium hydroxide varied greatly with solution strength. For some porcelain enamels the alkali resistance results, obtained with 5% sodium hydroxide, were contrary to those obtained with commercial detergents. The addition of a sodium hypochlorite type of bleach to detergent solution did not affect the degree of attack on porcelain enamels.