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Synthesis of indium hydroxide powders by a precipitation method

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2017, 27(3), pp.122-129
  • DOI : 10.6111/JKCGCT.2017.27.3.122
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Published : June 30, 2017

Choi Eun Kyoung 1 lee won jun 1 Han Kyu Sung 1 Ungsoo Kim 1 Jinho Kim 1 Kwangtaek Hwang 1 Jong-Young Kim 1 HAE JIN HWANG 2 Kwang Bo Shim 3 Wooseok Cho 1

1한국세라믹기술원
2인하대학교
3한양대학교

Accredited

ABSTRACT

For the production of a high-density ITO target, In2O3 powders with a small particle size and low agglomeration should be synthesized. The purpose of this study is to control the size and shape of the Indium hydroxide precursor which affects the properties of the In2O3 powder. As a starting raw material, Indium metal was dissolved in a Nitric acid (HNO3) solution. The effect of concentration, pH, and temperature on the properties of Indium hydroxide was investigated using ammonium hydroxide as a precipitant. Crystallite size of each sample was analyzed by X-ray diffraction and the shape and the size of the powder was analyzed by transmission electron microscopy. As a result, the particle size of Indium hydroxide was increased with increase in the concentration of In(NO3)3 and the particle size and shape of the Indium hydroxide remained unchanged with increase in the pH of the solution. The particle size increased with increase in the precipitation temperature during precipitation.

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