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Reaction of Zirconia with Silica at the Stoichiometry of Zircon
Author(s) -
Trappen Karen M.,
Eppler Richard A.
Publication year - 1989
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.1151-2916.1989.tb06238.x
Subject(s) - zircon , cubic zirconia , halide , stoichiometry , materials science , oxygen , chemical engineering , diffusion , atmosphere (unit) , layer (electronics) , mineralogy , inorganic chemistry , chemistry , metallurgy , geology , nanotechnology , geochemistry , organic chemistry , ceramic , physics , engineering , thermodynamics
Zirconia was combined with silica and halide mineralizers and fired in a nitrogen atmosphere. X‐ray analysis showed zircon was formed, demonstrating that an oxygen atmosphere is not necessary for the formation of zircon. The reaction mechanism is the same as that forming zircon in air, involving transport of the silica as a volatile halide, followed by diffusion of silica and oxygen across the product layer to a reaction site on the zirconia.