β-Spodumene Glass-Ceramic with Anomalous Low Thermal Expansion

Akihiko Sakamoto; Yusuke Himei; Yoshio Hashibe

doi:10.4028/www.scientific.net/AMR.39-40.381

Paper Titles

Chemical Durability of Glass Thermal Insulation Fibers in Borate and Phosphate Water Solutions
p.363

The Influence of Metal Diffusion and Interfacial Reactions on the Crystallization Behaviour of Glasses Employed in the Manufacture of Glass-Ceramic-to-Metal Seals
p.369

Effects of Dispersed Al₂O₃ Particles on Sintering of LTCC
p.375

β-Spodumene Glass-Ceramic with Anomalous Low Thermal Expansion
p.381

Electron Microscopic Investigations of Electrochemically Induced Mullite Crystallization in a Glassy Matrix
p.387

Crystallization of Glasses in the MoO₃-Bi₂O₃ System
p.391

Evolution of Absorption Spectra in the Process of Nucleation in Photo-Thermo-Refractive Glass
p.395

Thermal Stability vs. Crystallization of the Lithiumsilicate Glasses with Addition Zirconium Dioxide and Titanium Dioxide
p.399

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 39-40β-Spodumene Glass-Ceramic with Anomalous Low...

β-Spodumene Glass-Ceramic with Anomalous Low Thermal Expansion

Abstract:

To survey new method for controlling thermal expansion of glass-ceramic material, we studied the coefficient of thermal expansion (CTE) and the microstructure of β-spodumene glass-ceramics. We found that the CTE of the β-spodumene glass-ceramics is remarkably reduced by introducing interstices at the boundary between the crystalline and glass phases. Despite its relatively low crystallinity (45vol%), a newly developed glass-ceramic showed an anomalous low thermal expansion of 7x10-7 /oC, which compares to that of silica glass. The mechanical strength of this glass-ceramic was at the same level as that of natural stones: marble and granite.