Radiative properties characterization of ZrB2-SiC-based ultrahigh temperature ceramic at high temperature

被引：45
作者：
Meng, Songhe [1 ]
Chen, Hongbo [1 ]
Hu, Jianghua [1 ,3 ]
Wang, Zongwei [2 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Inst Automat Detecting & Proc Control Syst, Harbin 150001, Peoples R China
[3] Xian Hitech Inst, Xian 710025, Peoples R China
来源：
MATERIALS & DESIGN | 2011年 / 32卷 / 01期
基金：
美国国家科学基金会;
关键词：
MECHANICAL-PROPERTIES; COMPOSITES; EMISSIVITY; BEHAVIORS; ZIRCONIUM;
D O I：
10.1016/j.matdes.2010.06.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Experimental investigations of radiative property on pre-oxidized ZrB2-SiC-15 vol.%-C ultrahigh temperature ceramic (ZSC UHTC) at high temperature range of 1100-1800 degrees C were performed. By Fourier transform infrared radiant (FT-IR) spectrometer, spectral emissivity was measured in the wavelength region between 3 and 18 mu m. Total normal emissivity was calculated using spectral emissivity data via theoretical formula. It has been found that high emissivity for all the testing specimens was presented, and the total normal emissivity is between 0.65 and 0.92 with temperature range from 1100 to 1800 degrees C. Moreover, the total normal emissivity of pre-oxidized ZSC ceramic decreased non-monotonously as the temperature increased. The total normal emissivity decreased as the testing temperature increased from 1100 to 1800 degrees C, whereas the total normal emissivity at the testing temperature of 1600 degrees C was higher than that of 1400 and 1800 degrees C. Macroscopical surface morphology and microstructure were carried out before and after the testing. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：377 / 381
页数：5
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