Paper Title:
Crystallization and Thermal Expansion of MgO-Al2O3-SiO2-TiO2 Glass-Ceramics
  Abstract

Crystallization sequence of MgO-Al2O3-SiO2-TiO2 system glass was investigated by means of DTA, XRD, SEM and EDS. The relationship between crystalline phases, heat treatment methods and thermal expansion coefficient (α) were well discussed. The results have shown that: The glass first underwent extensive phase separation into titanium-rich droplets in a silica-rich matrix, then magnesium aluminotitanate (MAT) initially precipitated in the droplet phases. With the crystallization temperature increased, β-quartzss, sapphirine, α-quartzss and α-cordierite made their appearance successively. The thermal expansion coefficient as a function of the heat treatment condition was studied.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
1635-1638
DOI
10.4028/www.scientific.net/KEM.280-283.1635
Citation
H. Shao, K. M. Liang, F. Zhou, F. Peng, "Crystallization and Thermal Expansion of MgO-Al2O3-SiO2-TiO2 Glass-Ceramics", Key Engineering Materials, Vols. 280-283, pp. 1635-1638, 2005
Online since
February 2007
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$32.00
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