X-ray powder diffraction characterization of residual stresses and strains in Y3Al5O12:Nd3+ nanocerarnics

被引：2

作者：

Fedyk, Robert ^{[1
]}

Holsa, Jorma ^{[2
]}

Hreniak, Dariusz ^{[3
]}

Lastusaari, Mika ^{[2
]}

Lehto, Vesa-Pekka ^{[4
]}

Lojkowski, Witold ^{[1
]}

Strek, Wieslaw ^{[3
]}

Tenho, Mikko ^{[4
]}

机构：

[1] Polish Acad Sci, Inst High Pressure Phys, Sokolowska 29-37, PL-01142 Warsaw, Poland

[2] Univ Turku, Dept Chem, FI-20014 Turku, Finland

[3] Polish Acad Sci, Inst Low Temp & Sci Res, PL-50422 Wroclaw, Poland

[4] Univ Turku, Dept Phys, FI-20014 Turku, Finland

来源：

STRESS EVALUATION IN MATERIALS USING NEUTRONS AND SYNCHROTRON RADIATION | 2008年 / 571-572卷

关键词：

yttrium aluminum garnet; neodymium; nanoceramics; stress; strain; texture;

D O I：

10.4028/www.scientific.net/MSF.571-572.303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Y3Al5O12:Nd3+ nanoceramics were obtained by sintering nanocrystalline Y3Al5O12:Nd3+ powders at 450 degrees C under different pressures between 2 and 8 GPa. The structural purity, residual stress, strain, texture, and crystallite size of the products were analysed with X-ray powder diffraction. The results indicate that the average crystallite size remains unchanged at about 30 nm in spite of the heating and the pressure applied. No texture was observed. On the other hand, the microstrains increase with increasing pressure, while the residual stresses are at their maximum in the green body and the sample processed at 8 GPa. Increasing strains were observed to increase the width of the luminescence lines and to decrease the luminescence decay times.

引用

页码：303 / +

页数：3

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