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Microalloy Precipitation at the Glass–Steel Interface Enabling Adherence of Porcelain Enamel
Author(s) -
Striepe Simon,
Bornhöft Hansjörg,
Deubener Joachim,
Wendel Jörg
Publication year - 2015
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12435
Subject(s) - materials science , electron microprobe , enamel paint , alloy , dissolution , metallurgy , microprobe , precipitation , coalescence (physics) , metal , composite material , chemical engineering , mineralogy , chemistry , physics , astrobiology , meteorology , engineering
The adherence of vitreous enamels on steel plates is studied clarifying the mechanisms taking place at the interface during firing. Evidence is provided from electron microprobe analysis for an iron alloy precipitation at the interface, which results from oversaturation of ferrous iron in the enamel glass. Subsequent coalescence of the alloy particles is observed but only after their bonding to the base metal adherence after cupping is achieved. The formation of microalloys requires Co 2+ , Ni 2+ , and Cu 2+ ions in the enamel glass. A selective dissolution of the base metal by the latter cations does not occur.