Structure of Mg- and Mg/Ca aluminosilicate glasses: 27Al NMR and Raman spectroscopy investigations

被引：188

作者：

Neuville, Daniel R. ^{[1
]}

Cormier, Laurent ^{[2
]}

Montouillout, Valerie ^{[3
,4
]}

Florian, Pierre ^{[3
,4
]}

Millot, Francis ^{[3
,4
]}

Rifflet, Jean-Claude ^{[3
,4
]}

Massiot, Dominique ^{[3
,4
]}

机构：

[1] CNRS IPGP, F-75005 Paris, France

[2] Univ Paris 07, Univ Paris 06, IPGP, CNRS,IMPMC, F-75015 Paris, France

[3] CRMHT, CNRS, UPR4212, F-45071 Orleans 2, France

[4] Univ Orleans, F-45067 Orleans 2, France

来源：

AMERICAN MINERALOGIST | 2008年 / 93卷 / 11-12期

关键词：

Aluminosilicate; glasses; NMR; Raman;

D O I：

10.2138/am.2008.2867

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The structure and properties of glasses and melts in the MgO-Al2O3-SiO2 (MAS) and CaO-MgO-Al2O3-SiO2 (CMAS) systems play an important role in Earth and material sciences. Aluminum has a crucial influence in these systems, and its environment is still questioned. In this paper, we present new results using Raman spectroscopy and Al-27 nuclear magnetic resonance on MAS and CMAS glasses. We propose an Al/Si tetrahedral distribution in the glass network in different Q(n) species for silicon and essentially in Q(4) and Al-V for aluminum. For the CMAS glasses, an increase of Al-V and Al-VI is clearly visible as a function of the increase of Mg/Ca ratio in the (Ca,Mg)(3)Al2Si3O12 (garnet) and (Ca,Mg)AlSi2O8 (anorthite) glass compositions. In the MAS system, the proportion of Al-V and Al-VI increases with decreasing SiO2 and, similarly with calcium aluminosilicate glasses, the maximum of Al-V is located in the center of the ternary system.

引用

页码：1721 / 1731

页数：11

共 80 条

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