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Quantitative High‐Temperature Oxidation of Porcelain Enameled Iron
Author(s) -
LEFORT H. G.,
FRIEDBERG A. L.
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.tb13543.x
Subject(s) - abrasion (mechanical) , materials science , metallurgy , metal , electroplating , cast iron , enamel paint , composite material , layer (electronics)
A continuous gain‐in‐weight method was used to measure quantitatively the oxidation taking place at elevated temperatures for long periods of time on enameled and unenameled iron. The oxidation was studied as a function of time and temperature on both bare and enameled iron. Specimens were subjected to variations in (1) enamel thickness, (2) thickness of electroplated‐nickel deposit, and (3) metal surface preparation of the iron. The rate of oxidation of enameled iron was lower than that of bare specimens at all temperatures. This effect was most significant at lower temperatures; it decreased in extent as the test temperature was increased to 1850°F. An increase in enamel thickness was very effective in reducing the rate of oxidation. To a lesser extent, an increase in nickel‐plate thickness on both enameled and unenameled specimens, and the use of sandblasting instead of mechanical abrasion and chemical cleaning as a method of metal preparation before enameling, also reduced the rate of oxidation. After the initial oxidation had proceeded at a linear rate, the oxidation rate of enameled and unenameled specimens followed a parabolic relation.