본문 바로가기
  • Home

Effect of modifiers on the properties of glass-ceramics containing coal bottom ash

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2010, 20(1), pp.53~57
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

KANG SEUNG GU 1

1경기대학교

Accredited

ABSTRACT

The influence of CaO addition on the crystallization temperature, crystal types, and microstructure of L-A-S (Li2O-Al2O3-SiO2) glass-ceramics system fabricated from a coal bottom ash, produced at thermal power plant, was studied. The glass transition and crystallization temperatures were shifted to the higher temperature position with increasing CaO content in a non-isothermal analysis using a DTA. The major crystalline phases of L-A-S glass-ceramics system produced were identified as β-spodumene (LiAlSi2O6) and eucryptite (LiAlSiO4). The glass-ceramics showed a bulk and surface crystallization behavior at a time. With increasing CaO content, the β-spodumene peak in XRD increased and some CaOrelated phases were formed. The surface crystal grown from the exterior to the center in glass-ceramics showed various shapes by amount of CaO added. Some cracks were generated at the glass-ceramics containing CaO above 9 wt% due to the mismatch of thermal expansion coefficients between a β-spodumene and CaO-related crystal phases.

Journal Copyright Policy

BY-NC 아이콘

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.

Citation status

* References for papers published after 2025 are currently being built.