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Effects of heat treatment and coatings on the infrared emissivity properties of carbon fibers

Published online by Cambridge University Press:  27 May 2014

Fuyuan Wang ,
Laifei Cheng ,
Qing Zhang  and
Litong Zhang
Fuyuan Wang
Affiliation:
Science and Technology on Thermostructural Composite Materials Laboratory, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, People's Republic of China
Laifei Cheng
Affiliation:
Science and Technology on Thermostructural Composite Materials Laboratory, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, People's Republic of China
Qing Zhang*
Affiliation:
Science and Technology on Thermostructural Composite Materials Laboratory, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, People's Republic of China
Litong Zhang
Affiliation:
Science and Technology on Thermostructural Composite Materials Laboratory, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, People's Republic of China
*
a)Address all correspondence to this author. e-mail: zhangqing@nwpu.edu.cn
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Abstract

The infrared emissivity properties of carbon fibers with different treatments were investigated in the wave length range 6–15 μm from 1273 to 1873 K. The heat treatment affected the infrared emissivity of carbon fibers through the microstructure evolution. The Raman investigation about the microstructure indicated that the increase of the graphitization degree in carbon fibers degenerated the infrared emissivity of carbon fibers, especially under high temperatures. For the coated carbon fibers, the infrared emissivity properties were decreased for carbon fibers coated pyrolytic carbon (PyC) due to the lamellar structure of PyC and increased for carbon fibers deposited carbon nanotubes (CNTs) owing to the skeleton-like structure of CNTs. The study also illustrated that the PyC coating thickness from 0.5 to 1.0 μm had few effects on the infrared emissivity properties of carbon fibers.

Keywords

fibersmicrostructureinfrared spectroscopy
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 10 , 28 May 2014 , pp. 1162 - 1167
Copyright
Copyright © Materials Research Society 2014 

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References

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