Infrared radiative properties of plasma-sprayed BaZrO3 coatings

Wang, Li; Habibi, M. H.; Eldridge, Jeffrey I.; Guo, Shengmin

doi:10.1016/j.jeurceramsoc.2014.05.015

Cited by 34 publications

(13 citation statements)

References 56 publications

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“…The second model selected to analyze the pBN spectra is the four flux approximation (4FA) recently used to investigate the infrared response of yttria-stabilized zirconia thermal barrier coatings [3,12]. The associated analytical expressions for reflectance and transmittance for a parallel plate of thickness also include three adjustable parameters: the index of refraction , the absorption coefficient and the scattering coefficient :…”

Section: Semi-transparency Domainmentioning

confidence: 99%

“…The availability of accurate optical and thermal radiative properties of scattering materials is becoming strategic in laboratories and even more patently in the industrial sector. This knowledge is essential in material selection, for sizing solar absorbers [1] and thermal barrier coatings [2,3], to design and shape thermal shields which protect instrumentation and communication devices in solar probes such as PHOIBOS and Solar Probe Plus [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Optical indices and transport scattering coefficient of pyrolytic boron nitride: a natural thermal barrier coating for solar shields

et al. 2016

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International audienceAbsorption and scattering properties of pyrolytic boron nitride (pBN) have been characterized by infrared spectroscopy. The strong dielectric anisotropy predicted by first principles calculations is confirmed by measurements performed on a highly oriented pBN sample. Optical properties of textured samples elaborated by chemical vapor deposition were identified from normal hemispherical reflectance and transmittance spectra by applying modified two-flux and four-flux transport models. It is also shown that coating carbon–carbon composites used to build solar shields with a pBN layer having an optimal thickness could improve the protection performance

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Section: Semi-transparency Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical indices and transport scattering coefficient of pyrolytic boron nitride: a natural thermal barrier coating for solar shields

et al. 2016

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“…The four-flux model is based on the Kubelka-Munk theory and is widely used to investigate the absorption and scattering characteristics of the translucent mediums [25,26]. In the radiative transport process of the biomimetic materials, the incident direction of the collimated radiation is defined as the positive direction.…”

Section: Radiation Propertiesmentioning

confidence: 99%

Preparation and optimization of biomimetic materials simulating solar spectrum reflection characteristics of natural leaves

2020

J Mater Sci

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Solar spectrum reflection characteristics of natural leaves are caused by the absorption and scattering processes of incident radiation in the leaves. To realize hyperspectral camouflage in the background of vegetation, two types of biomimetic materials are prepared. One type utilizes Cr 2 O 3 particles to simultaneously simulate the absorption characteristics in the visible light band and the scattering characteristics in the solar spectrum band and is named as COG-BM. The other type contains chlorophyll and TiO 2 particles to simulate the absorption and scattering characteristics in the above two bands, respectively, and is named as CH/TD-BM. The measured results show that both can simulate the solar spectrum reflection characteristics of the leaves approximately. In order to optimize the bionic performance, the reflectance predicting model was constructed with Lorenz-Mie scattering and four-flux theories. The simulation results show that with the increase in particle volume fraction, the reflectance of COG-BM in the visible light band is maintained at almost the same level as that of the leaves because of the simultaneous increase in absorption and scattering coefficients. Nevertheless, the reflectance of CH/TD-BM increases significantly, because the absorption coefficient of CH/TD-BM is constant with the increase in the particle volume fraction, and the scattering coefficient enhances remarkably. More interestingly, with the increase in particle size, the near-infrared plateau of COG-BM and CH/TD-BM is closer to horizontal, exhibiting greater similarity to the natural leaves. Moreover, the water absorption characteristics at 1450 and 1940 nm become more significant with the increase in water content.

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“…Oxygen deficiencies and corresponding crystal lattice defects caused by the reducing H 2 lead to thermoelectric properties. Plasma sprayed BaZrO 3 coatings with excellent infrared radiative properties but was accompanied with BaCO 3 [13], due to the decomposition in the extremely high temperature. As is known, both of microdefect and crystal lattice distortion can affect the performance of electrical ceramic.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and post heat treatment of 0.5Pb (Mg 1/3 Nb 2/3) O 3 -0.5Pb(Zr 0.48 Ti 0.52 )O 3 coatings by supersonic plasma spray

Liu¹,

Xing²,

Wang³

et al. 2017

Journal of the European Ceramic Society

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Infrared radiative properties of plasma-sprayed BaZrO3 coatings

Cited by 34 publications

References 56 publications

Optical indices and transport scattering coefficient of pyrolytic boron nitride: a natural thermal barrier coating for solar shields

Optical indices and transport scattering coefficient of pyrolytic boron nitride: a natural thermal barrier coating for solar shields

Preparation and optimization of biomimetic materials simulating solar spectrum reflection characteristics of natural leaves

Fabrication and post heat treatment of 0.5Pb (Mg 1/3 Nb 2/3) O 3 -0.5Pb(Zr 0.48 Ti 0.52 )O 3 coatings by supersonic plasma spray

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