CHEMICAL-PROCESSING AND DENSIFICATION CHARACTERISTICS OF LITHIUM ALUMINOSILICATE (LAS) GELS
SCIE
SCOPUS
- Title
- CHEMICAL-PROCESSING AND DENSIFICATION CHARACTERISTICS OF LITHIUM ALUMINOSILICATE (LAS) GELS
- Authors
- JANG, HM; JUNG, CJ; KIM, KS
- Date Issued
- 1992-08
- Publisher
- MATERIALS RESEARCH SOCIETY
- Abstract
- Two different chemical processing routes were successfully used for the fabrication of lithium aluminosilicate (LAS) specimens having dense and homogeneous microstructure with an essentially pore-free state. These are (i) sol-gel route using the hydrolysis-condensation reaction of metal alkoxides and (ii) mixed colloidal processing route. Lowering Li content in the sol-gel-derived LAS significantly enhanced densification and retarded the crystallization. The beta-spodumene (approximately 0.8-mu-m) seeding in the sol-gel-derived LAS modified the sequence of phase transformations and lowered the crystallization temperature by 120-degrees-C. Therefore, combining the epitaxial seeding with the sol-gel process, one can bring down the crystallization temperature to the sintering temperature range (approximately 800-degrees-C). Similarly, the LAS gel prepared by the mixed colloidal processing route exhibited a noticeable shrinkage over a broad temperature range (600-950-degrees-C) and produced a dense sintered body with an essentially pore-free microstructure.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22174
- DOI
- 10.1557/JMR.1992.2273
- ISSN
- 0884-2914
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS RESEARCH, vol. 7, no. 8, page. 2273 - 2280, 1992-08
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- There are no files associated with this item.
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