Preparation and Impurity Control of the BaTiO3 Coatings by Micro Arc Oxidation Method

  • Ok, Myeong-Ryul (Materials Science and Technology Division, Korea Institute of Science and Technology) ;
  • Kim, Ji Hye (Materials Science and Technology Division, Korea Institute of Science and Technology) ;
  • Oh, Young-Joo (Materials Science and Technology Division, Korea Institute of Science and Technology) ;
  • Hong, Kyung Tae (Materials Science and Technology Division, Korea Institute of Science and Technology)
  • 발행 : 2006.08.01

초록

$BaTiO_3$ coatings were prepared by micro arc oxidation (MAO) method. Only $Ba(OH)_2$ was dissolved in the electrolyte and process time was less than 30 min. Commercial purity $Ba(OH)_2$ (97%) containing $BaCO_3$ as impurity was used in preparing the electrolyte. XRD showed that the coating was composed of largely $BaTiO_3$, and in some process conditions, small quantity of impurity, $BaCO_3$, was characterized in the coating layer. The quantity of $BaCO_3$ could be controlled to negligible quantity by regulating the applied voltage and duration time of the MAO process.

키워드

참고문헌

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