Properties of alumina-zirconia powder prepared from aluminium chelate compound and zirconium alkoxide

Koji Kawabata, Hideyuki Yoshimatsu, Tatsumi Yabuki, Akira Kubotsu, Satoshi Hayakawa, Akiyoshi Osaka, Yoshinari Miura

Research output: Contribution to journalArticle

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Abstract

Alumina-zirconia powder (AZ) was prepared by thermal decomposition of organic precursors synthesized from ethyl acetoacetate aluminium diisopropoxide and zirconium tetra-n-butoxide. The specific surface area of AZ was higher than that of alumina-zirconia powder (ALK) prepared from aluminium tri-sec-butoxide and zirconium tetra-n-butoxide in the range of 0-40 mol% ZrO 2. The pore radius for AZ containing 0-40 mol% ZrO 2 distributed from 1 to 3 nm. The true density of AZ was lower than that of ALK in the range of 0-40 mol% ZrO 2. Four- and 6-coordinated Al atoms existed in ZrO 2-free AZ, while 5-coordinated Al atoms in addition to 4- and 6-coordinated Al atoms existed in AZ containing 20-80 mol% ZrO 2. These results indicate that alumina component and zirconia component in AZ were mixed homogeneously at the atomic level.

Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume106
Issue number2
Publication statusPublished - 1998

Fingerprint

Aluminum compounds
Aluminum Oxide
alkoxides
chelates
Zirconium
zirconium oxides
Zirconia
Powders
Alumina
aluminum oxides
aluminum
Aluminum
Atoms
atoms
zirconium oxide
Specific surface area
thermal decomposition
Pyrolysis

Keywords

  • Al MAS-NMR
  • Alumina-zirconia powder
  • Aluminium chelate compound
  • Pore size distribution
  • Specific surface area
  • True density
  • Zirconium alkoxide

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Properties of alumina-zirconia powder prepared from aluminium chelate compound and zirconium alkoxide. / Kawabata, Koji; Yoshimatsu, Hideyuki; Yabuki, Tatsumi; Kubotsu, Akira; Hayakawa, Satoshi; Osaka, Akiyoshi; Miura, Yoshinari.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 106, No. 2, 1998, p. 155-159.

Research output: Contribution to journalArticle

Kawabata, Koji ; Yoshimatsu, Hideyuki ; Yabuki, Tatsumi ; Kubotsu, Akira ; Hayakawa, Satoshi ; Osaka, Akiyoshi ; Miura, Yoshinari. / Properties of alumina-zirconia powder prepared from aluminium chelate compound and zirconium alkoxide. In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 1998 ; Vol. 106, No. 2. pp. 155-159.
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abstract = "Alumina-zirconia powder (AZ) was prepared by thermal decomposition of organic precursors synthesized from ethyl acetoacetate aluminium diisopropoxide and zirconium tetra-n-butoxide. The specific surface area of AZ was higher than that of alumina-zirconia powder (ALK) prepared from aluminium tri-sec-butoxide and zirconium tetra-n-butoxide in the range of 0-40 mol{\%} ZrO 2. The pore radius for AZ containing 0-40 mol{\%} ZrO 2 distributed from 1 to 3 nm. The true density of AZ was lower than that of ALK in the range of 0-40 mol{\%} ZrO 2. Four- and 6-coordinated Al atoms existed in ZrO 2-free AZ, while 5-coordinated Al atoms in addition to 4- and 6-coordinated Al atoms existed in AZ containing 20-80 mol{\%} ZrO 2. These results indicate that alumina component and zirconia component in AZ were mixed homogeneously at the atomic level.",
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AU - Yabuki, Tatsumi

AU - Kubotsu, Akira

AU - Hayakawa, Satoshi

AU - Osaka, Akiyoshi

AU - Miura, Yoshinari

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AB - Alumina-zirconia powder (AZ) was prepared by thermal decomposition of organic precursors synthesized from ethyl acetoacetate aluminium diisopropoxide and zirconium tetra-n-butoxide. The specific surface area of AZ was higher than that of alumina-zirconia powder (ALK) prepared from aluminium tri-sec-butoxide and zirconium tetra-n-butoxide in the range of 0-40 mol% ZrO 2. The pore radius for AZ containing 0-40 mol% ZrO 2 distributed from 1 to 3 nm. The true density of AZ was lower than that of ALK in the range of 0-40 mol% ZrO 2. Four- and 6-coordinated Al atoms existed in ZrO 2-free AZ, while 5-coordinated Al atoms in addition to 4- and 6-coordinated Al atoms existed in AZ containing 20-80 mol% ZrO 2. These results indicate that alumina component and zirconia component in AZ were mixed homogeneously at the atomic level.

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