Synthesis and structural characterization of ultrafine terbium oxide powders

被引：32

作者：

Balabanov, Stanislav S. ^{[1
]}

Permin, Dmitry A. ^{[1
]}

Rostokina, Elena Ye. ^{[1
]}

Egorov, Sergey V. ^{[2
]}

Sorokin, Andrey A. ^{[2
]}

Kuznetsov, Denis D. ^{[1
]}

机构：

[1] RAS, GG Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod, Russia

[2] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod, Russia

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 18期

基金：

俄罗斯基础研究基金会;

关键词：

Powders: chemical preparation; Microwave processing; Sintering B. X-ray methods Tb2O3 nanopowders; HIGH-TEMPERATURE SYNTHESIS; YB(YLA)(2)O-3 CERAMICS; THERMAL-DECOMPOSITION; CERIUM OXIDE; POWER LASERS; CRYSTAL; ACETATE; TB11O20;

D O I：

10.1016/j.ceramint.2017.09.044

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：

Glycine-nitrate self-propagating high-temperature synthesis was used to synthesize terbium oxide nanopowders whose phase transformations were investigated by methods of high-temperature differential scanning calorimetry, dilatometry, and X-ray diffraction analysis. The as-prepared powders consisting of Tb7O12 and Tb11O20 phases were converted to Tb2O3 after calcination at 600-800 degrees C in reducing atmosphere. The sintering behavior of Tb2O3 was studied under microwave heating up to 1780 degrees C. The microstructure of the powders and ceramics was investigated by scanning electron microscopy. Near full-density material was obtained at about 1620 degrees C. Further temperature increases causes a deterioration of the ceramics microstructure due to monoclinic Tb2O3 phase formation.

引用

页码：16569 / 16574

页数：6

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