Effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics

Fuyuan Wang; Laifei Cheng; Yanan Xie; Jie Jian; Litong Zhang

doi:10.1016/j.jallcom.2014.09.191

Effects of SiC shape and oxidation on the infrared emissivity properties of ZrB₂-SiC ceramics

Fuyuan Wang, Laifei Cheng, Yanan Xie, Jie Jian, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

ZrB₂-SiC ceramics were prepared by hot-pressing sintering using SiC whiskers and SiC particles and the effects of SiC shape and oxidation on the infrared emissivity properties of ZrB₂-SiC ceramics were investigated systematically. SiC whiskers and SiC particles affected the spectral emissivity of ceramics by changing the propagation direction of electromagnetic waves. Compared with SiC particles, SiC whiskers had smaller surface area at the same volume ratio and caused relatively higher infrared emissivity in ceramics. After oxidation at 1300 °C for different time, the total emissivity of ZrB₂-SiC ceramics varied in 0.70-1.00. The oxide layer on sample surface slowed down the increase rate of infrared emissivity and the substrate dominated the radiant behavior of ceramics. The investigation also illustrated that the exposed ZrO₂ on the samples surface degenerated the infrared emissivity properties of ZrB₂-SiC ceramics.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	625
DOIs	https://doi.org/10.1016/j.jallcom.2014.09.191
State	Published - 15 Mar 2015

Keywords

Infrared emissivity
Oxidation
SiC shape
ZrB-SiC ceramics

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10.1016/j.jallcom.2014.09.191

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title = "Effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics",

abstract = "ZrB2-SiC ceramics were prepared by hot-pressing sintering using SiC whiskers and SiC particles and the effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics were investigated systematically. SiC whiskers and SiC particles affected the spectral emissivity of ceramics by changing the propagation direction of electromagnetic waves. Compared with SiC particles, SiC whiskers had smaller surface area at the same volume ratio and caused relatively higher infrared emissivity in ceramics. After oxidation at 1300 °C for different time, the total emissivity of ZrB2-SiC ceramics varied in 0.70-1.00. The oxide layer on sample surface slowed down the increase rate of infrared emissivity and the substrate dominated the radiant behavior of ceramics. The investigation also illustrated that the exposed ZrO2 on the samples surface degenerated the infrared emissivity properties of ZrB2-SiC ceramics.",

keywords = "Infrared emissivity, Oxidation, SiC shape, ZrB-SiC ceramics",

author = "Fuyuan Wang and Laifei Cheng and Yanan Xie and Jie Jian and Litong Zhang",

year = "2015",

month = mar,

day = "15",

doi = "10.1016/j.jallcom.2014.09.191",

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T1 - Effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics

AU - Wang, Fuyuan

AU - Cheng, Laifei

AU - Xie, Yanan

AU - Jian, Jie

AU - Zhang, Litong

PY - 2015/3/15

Y1 - 2015/3/15

N2 - ZrB2-SiC ceramics were prepared by hot-pressing sintering using SiC whiskers and SiC particles and the effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics were investigated systematically. SiC whiskers and SiC particles affected the spectral emissivity of ceramics by changing the propagation direction of electromagnetic waves. Compared with SiC particles, SiC whiskers had smaller surface area at the same volume ratio and caused relatively higher infrared emissivity in ceramics. After oxidation at 1300 °C for different time, the total emissivity of ZrB2-SiC ceramics varied in 0.70-1.00. The oxide layer on sample surface slowed down the increase rate of infrared emissivity and the substrate dominated the radiant behavior of ceramics. The investigation also illustrated that the exposed ZrO2 on the samples surface degenerated the infrared emissivity properties of ZrB2-SiC ceramics.

AB - ZrB2-SiC ceramics were prepared by hot-pressing sintering using SiC whiskers and SiC particles and the effects of SiC shape and oxidation on the infrared emissivity properties of ZrB2-SiC ceramics were investigated systematically. SiC whiskers and SiC particles affected the spectral emissivity of ceramics by changing the propagation direction of electromagnetic waves. Compared with SiC particles, SiC whiskers had smaller surface area at the same volume ratio and caused relatively higher infrared emissivity in ceramics. After oxidation at 1300 °C for different time, the total emissivity of ZrB2-SiC ceramics varied in 0.70-1.00. The oxide layer on sample surface slowed down the increase rate of infrared emissivity and the substrate dominated the radiant behavior of ceramics. The investigation also illustrated that the exposed ZrO2 on the samples surface degenerated the infrared emissivity properties of ZrB2-SiC ceramics.

KW - Infrared emissivity

KW - Oxidation

KW - SiC shape

KW - ZrB-SiC ceramics

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U2 - 10.1016/j.jallcom.2014.09.191

DO - 10.1016/j.jallcom.2014.09.191

M3 - 文章

AN - SCOPUS:84915789442

SN - 0925-8388

VL - 625

SP - 1

EP - 7

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effects of SiC shape and oxidation on the infrared emissivity properties of ZrB₂-SiC ceramics

Abstract

Keywords

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