Influence of Precursor Preparation via Ammonolysis Route on Alumina-Zirconia Nanostructure.

DOI Web Site Web Site 5 References Open Access
  • TANG Jun-Min
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University
  • UEHARA Masato
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University
  • ENOMOTO Naoya
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University
  • HOJO Junichi
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University
  • NAKAGAWA Zenbe-e
    Faculty of Engineering & Resource Science, Akita University

Bibliographic Information

Other Title
  • アルミナ-ジルコニアナノ構造に対してアンモニア法による前駆体調製方法が与える影響

Search this article

Description

Al2O3-ZrO2 composite precursor was synthesized by introducing ammonia into a liquid mixture of ZrO2 sol and Al(NO3)3 aqueous solution. Precipitation of bayerite suggested a degradation in the dispersion of ZrO2 nanoparticles in the Al2O3 matrix during heat treatment. In order to avoid the formation of bayerite, it was preferred to produce a precipitation with a diluted NH3 water solution with NH3+N2 gas by controlling the hydration temperature and the NH3-adding methods. After suitable calcination and hot pressing, we successfully synthesized a uniform Al2O3-ZrO2 microstructure in which tetragonal zirconia particles of 30nm were finely dispersed within the alumina grains.

Journal

References(5)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top