Interfacial precipitation in titania-doped diphasic mullite gels
1998 ◽
Vol 13
(4)
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pp. 974-978
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Keyword(s):
Sol Gel
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Interfacial precipitation in sol-gel derived, titania-doped diphasic mullite gels was investigated using conventional and high resolution transmission electron microscopy. Rutile, anatase, and brookite precipitated on the interface between {110} planes of mullite and glass pockets in the sintered body. The formation of brookite may be attributable to the Si- and Al-rich environment during precipitation. Each polymorph of titania has a unique morphology and orientation relationship with mullite. Brookite exhibits a truncated pill box shape, and anatase displays a vermicular morphology. Quenching experiments suggest that the precipitates grow and undergo phase transformations during cooling.
2009 ◽
Vol 24
(1)
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pp. 192-197
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1998 ◽
Vol 294-296
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pp. 43-50
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2008 ◽
Vol 56
(13)
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pp. 3169-3176
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2010 ◽
Vol 434-435
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pp. 717-718
1982 ◽
Vol 40
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pp. 722-723
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2002 ◽
Vol 82
(4)
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pp. 735-749
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