Investigation of High-Temperature Normal Infrared Spectral Emissivity of ZrO2 Thermal Barrier Coating Artefacts by the Modified Integrated Blackbody Method

Zhang, Tong; Song, Xiaoqian; Qi, Gongjin; An, Bin; Wei, Dong; Zhao, Yan; Wang, Zhiyong; Yi, Xiaosu; Yuan, Z.; Zhao, Yunlong; Sun, luge; Mao, Hongyu

doi:10.3390/ma15010235

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…In terms of experimental observation, the current spectral emissivity measurement of high-temperature targets is mainly based on energy or reflectance [ 15 , 16 ]. Emissivity can be calculated as the ratio of the target radiant energy to the radiant energy of the blackbody at the same temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the blackbody radiation energy is obtained by observing a blackbody furnace at the same temperature. The integral blackbody technique [ 15 ] and independent blackbody [ 16 , 17 , 18 ] with Fourier-transform infrared spectrometer are the main current approaches used for observation in SWIR. The integrated blackbody formed by the sample surface on the cavity bottom is coupled with the cavity wall.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

Sun¹,

Jiang²,

Hao³

et al. 2022

Sensors

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The currently used energy methods in spectral emissivity measurement are susceptible to the difference in temperature between the target and the reference blackbody. It is also limited by the state of the observation target and observation. This paper introduces the irradiance condition, while using the correlation between the information of emission energy and reflected energy of the high-temperature target. Based on the principle of radiative transmission and energy conservation, the relationship between the emissivity and bidirectional reflectance factor (BRF) was used to perform the retrieval of emissivity and temperature. An experimental device was designed, and graphite and rock were considered to verify the feasibility of the experimental scheme. The error of emissivity and temperature of both targets were, respectively, less than 5% and 0.5%, due to the Lambertian assumption, and the systematic errors had negligible impact on the retrieval. This verifies that the experimental observation method and scheme is reasonable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

Sun¹,

Jiang²,

Hao³

et al. 2022

Sensors

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Low thermal conductivity and thermal radiation of La2Zr2O7 ceramics with hierarchical structure above 1000 K

Yu,

Guo,

Cai

et al. 2023

Ceramics International

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Protective Magnetron Sputtering Physical Vapor Deposition Coatings for Space Application

Kucharska,

Bochra,

Wierzchoń

et al. 2024

Coatings

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In this study, the use of Cr/CrN+CrCN/Cr-C:H, Cr/W-C:H, and Cr/CrN+Ag/Cr-C:H coatings deposited on copper beryllium were investigated. These protective coatings were prepared using the Magnetron Sputtering Physical Vapor Deposition (MSPVD) method. The tests were carried out in order to qualify the outer DLC (Diamond-Like Carbon) layers for use as the protective function and for regulating the thermo-optical properties. The objective of this study was to compare the properties of chromium and chromium nitride-based coatings. The microstructure, architecture, and chemical composition were studied using scanning electron microscopy (SEM), Photo Diode BackScattered Electrons (PDBS), and X-ray dispersion spectroscopy (EDX). The adhesion was evaluated using a scratch test and a peel and pull-off method. The level of protection against the cold welding effect was tested. Thermo-optical, microhardness, and surface electric resistivity tests were performed. It was found that in cases where increased resistance to cold welding is required, DLC2 and DLC3 proved to be the best solutions. An example of such an application is tubular boom antennas, which are stored in a rolled-up form until deployed in space. They are susceptible to cold welding due to vibration during rocket launch and subsequent exposure to high vacuum.

show abstract

Investigation of High-Temperature Normal Infrared Spectral Emissivity of ZrO2 Thermal Barrier Coating Artefacts by the Modified Integrated Blackbody Method

Cited by 4 publications

References 26 publications

Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

Low thermal conductivity and thermal radiation of La2Zr2O7 ceramics with hierarchical structure above 1000 K

Protective Magnetron Sputtering Physical Vapor Deposition Coatings for Space Application

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