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Synthesis of Chemically Stabilized Cristobalite
Author(s) -
Saltzberg Michael A.,
Bors Susan L.,
Bergna Horacio,
Winchester Steven C.
Publication year - 1992
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.1151-2916.1992.tb05447.x
Subject(s) - cristobalite , dopant , yield (engineering) , chemical engineering , materials science , mineralogy , solid state , phase (matter) , organosilicon , chemistry , organic chemistry , polymer chemistry , metallurgy , doping , quartz , optoelectronics , engineering
The synthesis of chemically stabilized cristobalite (CSC) by a wet‐chemical route is described. CSC is a form of silica (containing small amounts of other oxides) which is similar in many ways to β‐cristobalite, but does not invert to α‐cristobalite upon cooling. The effects of changing the dopant levels and various synthetic parameters on the phases formed in the CaO‐Al 2 O 3 ‐SiO 2 system have been investigated. Stabilization of cristobalite with a number of different dopant combinations has been attempted, with mixed results. The use of wet‐chemical techniques has led to the synthesis of apparently phase‐pure CSC in a composition region where traditional solid‐state synthetic techniques yield a mixture of other phases.