In Situ study of Nucleation of Zirconia in an MgO-Al2O3-SiO2 Glass

被引：59

作者：

Dargaud, Olivier ^{[1
,2
]}

Calas, Georges ^{[1
]}

Cormier, Laurent ^{[1
]}

Galoisy, Laurence ^{[1
]}

Jousseaume, Cecile ^{[2
]}

Querel, Gilles ^{[3
]}

Newville, Matthew ^{[4
]}

机构：

[1] Univ Paris Diderot, Univ Paris 06, CNRS, IPGP,UMR 7590,Inst Mineral & Phys Milieux Condens, F-75015 Paris, France

[2] St Gobain Res, F-93303 Aubervilliers, France

[3] St Gobain Northboro Res & Dev Ctr, Northborough, MA 01532 USA

[4] Univ Chicago, Consortium Adv Radiat Sources, Argonne, IL 60439 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 02期

关键词：

X-RAY-ABSORPTION; NEUTRON-DIFFRACTION; SPECTROSCOPY; CRYSTALLIZATION; ENVIRONMENTS; SCATTERING; ELEMENTS; MG; AL;

D O I：

10.1111/j.1551-2916.2009.03409.x

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：

Crystalline nucleation is investigated during the dynamical heat treatment of a ZrO2-MgO-Al2O3-SiO2 glass by high-temperature Zr K-edge X-ray absorption near-edge spectroscopy. In the parent glass, the Zr coordination number is higher than in most glasses, explaining the structural instability of Zr during thermal treatment. The Zr local structure is modified at 30 degrees C above the nucleation onset. Crystalline nucleation is characterized by the formation of peculiar nano-ZrO2 particles, which are stable until completion of the thermal treatment. These nano-ZrO2 particles are stable during the elaboration of glass-ceramics, without any Zr4+ remaining in the glassy matrix of the final material.

引用

页码：342 / 344

页数：3

共 21 条

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