Crystallization of Y2O3-Al2O3 Rich Glasses: Synthesis of YAG Glass-Ceramics

被引：57

作者：

Alahrache, Salaheddine ^{[1
,2
]}

Deschamps, Michael ^{[1
,2
]}

Lambert, Julien ^{[1
,2
]}

Suchomel, Matthew R. ^{[3
]}

Meneses, Domingos De Sousa ^{[1
,2
]}

Matzen, Guy ^{[1
,2
]}

Massiot, Dominique ^{[1
,2
]}

Veron, Emmanuel ^{[1
,2
]}

Allix, Mathieu ^{[1
,2
]}

机构：

[1] CNRS, Lab CEMHTI, UPR 3079, F-45071 Orleans 2, France

[2] Univ Orleans, Fac Sci, F-45067 Orleans 2, France

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 42期

关键词：

HIGH-TEMPERATURE; PHASE; LIQUID; NMR; LUMINESCENCE; PHOSPHORS; Y3AL5O12; SI-29; CE;

D O I：

10.1021/jp207516w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An yttria-alumina glass incorporating 4 wt % of SiO2 was prepared by the use of an aerodynamic levitator equipped with a laser heating device. Upon post synthesis annealing, the glass is observed to exhibit crystallization below the glass transition temperature. In the current study, this unusual behavior is examined using powder X-ray diffraction and infrared spectroscopy to follow crystallinity and optical absorbance as a function of annealing treatment. Double-resonance Al-27/Si-29 NMR spectroscopy and synchrotron diffraction experiments demonstrate that Si cations are incorporated in the formed Y3Al5O12 (YAG) crystals on the 4-fold coordination Al site during crystallization. This has important consequences on the resulting microstructure of the YAG glass-ceramics.

引用

页码：20499 / 20506

页数：8

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