ULTRAFINE GRAINED GLASS-CERAMICS OBTAINED WITH CR2O3 ADDITIONS

被引：16

作者：

ANDRIANASOLO, B ^{[1
]}

CHAMPAGNON, B ^{[1
]}

ESNOUF, C ^{[1
]}

机构：

[1] INST NATL SCI APPL,GEMPPM,CNRS,UA 341,F-69622 VILLEURBANNE,FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1990年 / 126卷 / 1-2期

关键词：

D O I：

10.1016/0022-3093(90)91028-P

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nucleation process of an aluminosilicate precursor of a glass-ceramic SiO2Al2O3Li2O is studied when a low concentration of Cr2O3 is added to the usual nucleating elements ZrO2 and TiO2. For annealing at 770 and 720°C, low frequency inelastic scattering (LoFIS) and transmission electron microscopy (TEM) characterize diameter of nuclei up to 6 nm while electron paramagnetic resonance and laser spectroscopy determine the environment of the chromium ions during the nucleation process. It is shown that chromium ions strongly modify the nucleation but do not enter in the nuclei. An enhancement of the number of nuclei and a simultaneous reduction of their size is postulated. © 1990.

引用

页码：103 / 110

页数：8

共 21 条

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