Phase equilibria study and thermodynamic description of the BaO-CaO-Al2O3 system

Rui Zhang*, Huahai Mao, Pekka Taskinen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

A combined experimental investigation and thermodynamic assessment was performed for the BaO-CaO-Al2O3 system. By using a high-temperature equilibration/quenching technique and scanning electron microscopy, electron probe microanalysis, and X-ray powder diffraction analysis, the phase equilibria at 1500°C and phase stability of BaCa2Al8O15 phase were determined. An extensive literature survey was conducted for the experimental and thermodynamic modeling data of the BaO-CaO-Al2O3 system. According to the literature data and the present measurements, a thermodynamic assessment was made in order to obtain a set of self-consistent thermodynamic parameters to describe the BaO-CaO-Al2O3 system. Based on the thermodynamic parameters acquired in this work, isothermal sections at 1100°C, 1250°C, 1400°C, 1475°C, and 1500°C and the BaO·Al2O3-CaO·Al2O3 and BaO·6Al2O3-CaO·6Al2O3 joints were calculated and compared with the available experimental data.

Original languageEnglish
Pages (from-to)2722-2731
Number of pages10
JournalJournal of the American Ceramic Society
Volume100
Issue number6
DOIs
Publication statusPublished - 1 Jun 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • glass-ceramics
  • phase equilibria
  • thermodynamics

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