Preparation of Li2ZrO3 by powder reaction and hydrolysis of metal alkoxides
Identifieur interne : 000C00 ( Istex/Curation ); précédent : 000B99; suivant : 000C01Preparation of Li2ZrO3 by powder reaction and hydrolysis of metal alkoxides
Auteurs : C. Alvani [Italie] ; L. Bruzzi [Italie] ; S. Casadio [Italie] ; V. Rondinella [Italie] ; A. Tucci [Italie] ; E. H. Toscano [Italie, Allemagne]Source :
- Journal of the European Ceramic Society [ 0955-2219 ] ; 1989.
Abstract
Three methods have been developed to produce high purity, fine grained lithium metazirconate (Li2ZrO3) powders. In the first, a solid state powder reaction starting from lithium peroxide and zirconia fine commercial powders was performed. Alternatively, two wet routes were developed, both starting from metal alkoxides: the first consists of a hydrolysis and coprecipitation; the second route is based on the hydrolysis and polycondensation of the precursors, mixed in solution and gelled. Subsequently, the powders were calcined to obtain the lithium metazirconate. Uniaxial cold pressing and pressureless sintering were used to consolidate monoliths having about 80% of the theoretical density and a pore distribution which made the material suitable for the blanket of fusion reactors.
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DOI: 10.1016/0955-2219(89)90024-1
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<front><div type="abstract" xml:lang="en">Three methods have been developed to produce high purity, fine grained lithium metazirconate (Li2ZrO3) powders. In the first, a solid state powder reaction starting from lithium peroxide and zirconia fine commercial powders was performed. Alternatively, two wet routes were developed, both starting from metal alkoxides: the first consists of a hydrolysis and coprecipitation; the second route is based on the hydrolysis and polycondensation of the precursors, mixed in solution and gelled. Subsequently, the powders were calcined to obtain the lithium metazirconate. Uniaxial cold pressing and pressureless sintering were used to consolidate monoliths having about 80% of the theoretical density and a pore distribution which made the material suitable for the blanket of fusion reactors.</div>
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