High temperature thermal barrier coatings from recycled fly ash cenospheres

被引：41
作者：
Arizmendi-Morquecho, A. [1 ]
Chavez-Valdez, A. [2 ]
Alvarez-Quintana, J. [1 ]
机构：
[1] Ctr Invest Mat Avanzados SC Unidad Monterrey, Apodaca 66600, Nuevo Leon, Mexico
[2] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Inst Biomat, D-91058 Erlangen, Germany
来源：
APPLIED THERMAL ENGINEERING | 2012年 / 48卷
关键词：
High temperature insulators; Thermal barrier coatings; Fly ash cenospheres; CONDUCTIVITY; CEMENT; HEAT;
D O I：
10.1016/j.applthermaleng.2012.05.004
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The high temperature behavior of electrophoretically deposited thermal barrier coatings based on recycled fly ash cenospheres is presented. Thermal properties such as thermal expansion coefficient, specific heat, thermal conductivity, thermal diffusivity and thermal effusivity of fly ash (FA) and fly-ash cenospheres (FAC) were measured in the temperature range of 373 K-1173 K. Thermal conductivity values as low as 0.17 W/m K and 0.32 W/m K for FAC and FA respectively at 1200 K were found. These results confirm their potentiality as ultra-low thermal conductivity thermal insulators for high temperature applications. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：117 / 121
页数：5
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