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Interfacial Reactions in Lead Oxide‐Bearing Enamel‐Metal Systems
Author(s) -
GREENBERG CHARLES B.,
COOK RALPH L.
Publication year - 1967
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.1151-2916.1967.tb15045.x
Subject(s) - materials science , oxide , metal , lead oxide , boron , enamel paint , metallurgy , copper , bearing (navigation) , lead (geology) , layer (electronics) , precipitation , composite material , chemistry , physics , cartography , organic chemistry , geomorphology , geology , meteorology , geography
Interfacial reactions involving the use of lead oxide‐bearing enamels fused directly to steel substrates were studied. Particular emphasis was given to the lead borate enamels. Metallic lead precipitated from all lead oxide‐bearing enamels when they were fused in air in contact with steel; no such precipitation could be detected as a result of fusion on copper substrates. Interfacial compounds were identified by X‐ray analysis. Electron micrographs taken at ×2900 and ×20,000 showed that the interfacial region consisted of bands, each of which contained metallic lead, iron borate, Fe 2 Si0 4 , or glass, depending on the specific system and layer. The development of a band structure did not appear to promote adherence within the firing and compositional limits investigated.