Direct visualization of high-temperature dissolution dynamics of α-Al2O3(0 0 0 1) with an oxide-based melt flux of Sn:BiOx

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Abstract

The present study is a challenge to visualizing the high-temperature dissolution dynamics of an α-Al2O3(0 0 0 1) crystal surface buried in an oxide-based melt flux of Sn:BiOx above 1000 °C with a confocal scanning laser microscope. The formation of triangular pits consisting of the R-planes was kinetically dominant at the initial stage of the dissolution process. It was then followed by their shapes gradually approaching to hexagonal-like ones consisting of the M- and R-planes. A preliminary estimation was also attempted of the activation energies for the dissolution process and the result was then discussed in comparison to those previously reported.

Original languageEnglish
Article number139869
JournalChemical Physics Letters
Volume803
DOIs
Publication statusPublished - 2022 Sep 16

Keywords

  • Confocal scanning laser microscope
  • Dissolution process
  • In situ observation
  • Interface
  • α-AlO

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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