Effects of boron on structure of lanthanum and sodium aluminoborosilicate glasses studied by X-ray diffraction, transmission electron microscopy and infrared spectrometry

被引：11

作者：

Mabrouk, A. ^{[1
,2
,3
]}

Meneses, D. De Sousa ^{[1
,2
]}

Pellerin, N. ^{[1
,2
]}

Veron, E. ^{[1
,2
]}

Genevois, C. ^{[1
,2
]}

Ory, S. ^{[1
,2
]}

Vaills, Y. ^{[1
,2
]}

机构：

[1] Univ Orleans, CNRS, CEMHTI UPR 3079, F-45071 Orleans, France

[2] Univ Orleans, Fac Sci, Ave Parc Floral,BP 6749, F-45067 Orleans 2, France

[3] CEA DEN DTN SMTA LMCT, Site Cadarache, F-13108 St Paul Les Durance, France

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2019年 / 503卷

关键词：

Aluminoborosilicate glass; Peraluminous; Phase separation; Lanthanum oxide; Infrared; ALUMINOSILICATE GLASSES; PHASE-SEPARATION; BOROSILICATE GLASSES; CALCIUM SILICATE; CRYSTALLIZATION; YTTRIUM; GADOLINIUM; ALUMINUM; AL-27; ORDER;

D O I：

10.1016/j.jnoncrysol.2018.09.030

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：

Study of glasses with a high content of rare earth elements has a particular interest due to their use in nuclear waste storage. New glass matrices are required to immobilize even higher concentrations of high-level waste in comparison to borosilicate glasses already used. We study the effect of aluminum/boron substitution on the structure of peraluminous lanthanum-rich sodium aluminoborosilicate glasses of 55SiO(2)-(25-x)Al2O3-xB(2)O(3)-15Na(2)O-5La(2)O(3) composition, where lanthanum simulate all the lanthanides as well as the minor actinides typical for the high-level waste. We have here chosen a chemical composition of a model glass that can accept the presence of minor actinides among the fission products generated by the new reactors of the fourth generation. Transmission Electron Microscopy, Differential Scanning Calorimetry, X-ray diffraction and Infrared spectroscopy showed the existence of phase separation at high boron oxide concentrations, and finely characterized the structure of the major vitreous network.

引用

页码：69 / 77

页数：9

共 37 条

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