Fabrication of highly porous Y2O3:Ho,Yb ceramic and its thermometric applications

被引：43

作者：

Guo, Yanyan ^{[1
,2
]}

Wang, Dianyuan ^{[3
]}

He, Yong ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China

[2] Jiujiang Univ, Coll Mech & Mat Engn, Jiujiang 332005, Peoples R China

[3] Jiujiang Univ, Coll Sci, Jiujiang 332005, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 741卷

关键词：

Porous ceramics; Y2O3:Ho; Yb; Microstructure; Compressive strength; Upconversion luminescence; UP-CONVERSION LUMINESCENCE; TRANSPARENT CERAMICS; FLUORESCENCE; EMISSION;

D O I：

10.1016/j.jallcom.2018.01.229

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：

Highly porous Y2O3:Ho,Yb ceramic with relative high compressive strength was successfully fabricated by using NaF as pore-forming agent for the first time. The porosity, pore size, compressive strength and temperature-dependent upconversion luminescence of the as-fabricated porous Y2O3: Ho,Yb ceramic were investigated in detail. It was found that the open porosity and compressive strength of the as-fabricated porous Y2O3: Ho, Yb ceramic were 43.12% and 28.53 MPa, respectively, and the pore size was 4-8 mu m. Under 980 nm excitation, the upconversion luminescence intensity ratio (I-550/I-665) of the 550 nm and 665 nm emissions varied from 8.10 to 4.63 with the temperature increasing from 293 K to 873 K. Porous Y2O3: Ho, Yb ceramic with such properties could be applied to ultra-high temperature ceramic structures for space application, luminescent probes and temperature sensors. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1158 / 1162

页数：5

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