Luminescence thermometry for environmental barrier coating materials

被引：16
作者：
Chambers, M. D. [1 ]
Rousseve, P. A. [1 ]
Clarke, D. R. [1 ]
机构：
[1] Univ Calif Santa Barbara, Dept Mat Engn, Santa Barbara, CA 93106 USA
来源：
SURFACE & COATINGS TECHNOLOGY | 2008年 / 203卷 / 5-7期
关键词：
Europium; Yttrium silicate; Environmental barrier coatings; Optical thermometry; High temperature luminescence; Lifetime;
D O I：
10.1016/j.surfcoat.2008.07.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The potential for applying luminescence thermometry techniques to two candidate materials for environmental barrier coatings, Y2SiO5 and Y2Si2O7, is investigated. The high temperature luminescence of Eu3+ doped Y2SiO5 and Y2Si2O7 is measured to assess the capability of thermometry based on the decay lifetimes of the rare-earth ions after pulsed laser excitation. The resulting decay profiles and their evolution with temperature are discussed as well as approaches to fitting of the profiles to yield precise, reproducible lifetime values. Lifetime-temperature maps for both materials are presented. (C) 2008 Elsevier B.V. All rights reserved.
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页码：461 / 465
页数：5
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