Articles
  • Mechanical properties of CaO-MgO-Al2O3-SiO2-based glass–ceramic glaze for ceramic tiles fabricated by controlled heat-treatment

  • Jeong-U Eoma, Seunggu Kanga, Kangduk Kima,* and Jin-Ho Kimb,**

  • aDepartment of Advanced Materials Science and Engineering, Kyonggi University, Suwon 16227, Korea
    bKorea Institute of Ceramic Engineering & Technology, Icheon 17303, Korea

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Glass–ceramic glazes were prepared using a CaO-MgO-Al2O3-SiO2 system and were used to fabricate low-temperature firing, high-hardness glazes in ceramic tiles. Additives (B2O3) and a nucleating agent (TiO2) were added to the glaze, and crystalline glazes were obtained by sintering at 1000 ~ 1100 oC for 30 or 60 min. X-ray diffraction analysis of the glazes suggested that cordierite (Mg2Al4Si5O18) and anorthite (CaAl2Si2O8) crystal phases were present, and the peak intensity of the cordierite crystal phase increased with increasing sintering temperature. All samples showed high crystallinities of 70% or more, irrespective of sintering temperature or time. The glaze density increased with increasing sintering temperature and decreased at 1100 oC. The Vickers hardness test results of the glazes indicated high hardness values of 6.79 and 6.77 GPa after 30 min heat treatment at 1000 oC and 60 min at 1050 oC, respectively. Glass-ceramic glaze with high hardness at low temperature was fabricated through crystallization of glaze for tiles


Keywords: CaO-MgO-Al2O3-SiO2, Glass–Ceramic Glazes, Hardness, Thermal Expansion Coefficient, Sintering

This Article

  • 2021; 22(5): 568-575

    Published on Oct 31, 2021

  • 10.36410/jcpr.2021.22.5.568
  • Received on Mar 31, 2021
  • Revised on Apr 17, 2021
  • Accepted on Apr 28, 2021

Correspondence to

  • Kangduk Kim a, and Jin-Ho Kim b

  • aDepartment of Advanced Materials Science and Engineering, Kyonggi University, Suwon 16227, Korea
    Tel: +82–10-6206-6290
    bKorea Institute of Ceramic Engineering & Technology, Icheon 17303, Korea
    Tel: +82–10-8914-8707

  • E-mail: solidwaste@kyonggi.ac.kr, jino.kim@kicet.re.kr