Fabrication of AMO4 (A = Ba, Sr, Ca M = Mo, W) films on M substrate by solution reaction assisted ball rotation

Dinesh Rangappa, Takeshi Fujiwara, Tomoaki Watanabe, Masahiro Yoshimura

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

An alkaline earth molybdates and tungstates, such as AMoO4 and AWO4, films have been successfully fabricated on the respective metal substrate in AOH (A = Ba, Sr, Ca) solutions by a ball rotation-assisted solution reaction at room temperature. This film consists the polyhedral crystals of AMO4 with an average grain size of 8 μm. The dissolution of substrate surface was mainly controlled by the concentration of H2O2 oxidizing agent and ball rotation to form MO 4 2 - in the solution. AMO4 was deposited on the substrate by the reaction between MO4 2 - and A 2 + ions without any high energy or high temperature treatment. Also, the mass transport of alkaline earth ions on to the solid/solution interface was improved as a result of the vigorous solution agitation by the ball rotation. Therefore, the deposition rate of the AMO4 films was accelerated by the ball rotation. A decrease in the grain size of the film was observed incase of an excessive ball rotation.

Original languageEnglish
Pages (from-to)853-860
Number of pages8
JournalJournal of Electroceramics
Volume17
Issue number2-4
DOIs
Publication statusPublished - 2006 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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