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THE COMPARISON OF MECHANICAL PROPERTIES OF SINTERED ?. QUARTZ SOLID SOLUTION AND GAHNITE GLASS – CERAMICS IN ZNO-AL2O3-SIO2 SYSTEM
Eftekhari-Yekta B., Marghussian V.k.,
Volume 2, Issue 2 (6-2005)
Abstract
The effect of precipitation of ?.qss. and gahnite phases during heat treatment of glass frits in the ZnO-Al2O3-SiO2 system on the mechanical property of resulting glass-ceramic specimens were investigated. It was shown that gahnite glass-ceramics had higher bend strength and toughness values than ?.qss. ones. The results are attributed to the higher modulus of elasticity as well as higher thermal expansion coefficient of gahnite relative to the residual glass phase.
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