EFFECTS OF NUCLEATING-AGENTS ON DIOPSIDE CRYSTALLIZATION IN NEW GLASS-CERAMICS FOR TILE-GLAZE APPLICATION

被引：72

作者：

BALDI, G ^{[1
]}

GENERALI, E ^{[1
]}

LEONELLI, C ^{[1
]}

MANFREDINI, T ^{[1
]}

PELLACANI, GC ^{[1
]}

SILIGARDI, C ^{[1
]}

机构：

[1] UNIV MODENA,FAC ENGN,DEPT CHEM,I-41100 MODENA,ITALY

来源：

JOURNAL OF MATERIALS SCIENCE | 1995年 / 30卷 / 12期

关键词：

D O I：

10.1007/BF01209246

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of crystallization produced by addition of TiO2, ZrO2 and P2O5 oxides to glass-ceramic of the system CaO-MgO-SiO2 was studied using structural and thermal techniques. The devitrification process was independent of thermal treatment. X-ray diffraction studies performed on the glass-ceramic system indicated that diopside crystalline phase was more thermodynamically favourable than other phases. The effect of the nucleating agent depends on its nature: TiO2 decreased the activation energy while P2O5 and ZrO2 did not. SEM analysis of the doped glass-ceramics showed randomly distributed crystals with significant dimensional variations from those of the undoped system. All these formulations, showing a high crystallization rate, and a fast heating rate, can be used as tile glazes and/or tile-glaze components.

引用

页码：3251 / 3255

页数：5

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