アルミニウムキレート化合物とジルコニウムアルコキシドより作製したアルミナ-ジルコニア粉体の性質

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タイトル別名
  • Properties of Alumina-Zirconia Powder Prepared from Aluminium Chelate Compound and Zirconium Alkoxide
  • アルミニウム キレート カゴウブツ ト ジルコニウム アルコキシド ヨリ サク

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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 0-40mol% ZrO2. The pore radius for AZ containing 0-40mol% ZrO2 distributed from 1 to 3nm. The true density of AZ was lower than that of ALK in the range of 0-40mol% ZrO2. Four- and 6-coordinated Al atoms existed in ZrO2-free AZ, while 5-coordinated Al atoms in addition to 4- and 6-coordinated Al atoms existed in AZ containing 20-80mol% ZrO2. These results indicate that alumina component and zirconia component in AZ were mixed homogeneously at the atomic level.

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