scholarly journals Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1178 ◽  
Author(s):  
Hongwen Yu ◽  
Jinkai Li ◽  
Qian Zhang ◽  
Wei Pang ◽  
Hui Yan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Iron Oxidation ◽  
Optical Trap ◽  
Thermal Conversion ◽  
Performance Criterion ◽  
Solar Thermal ◽  
Solar Absorptance ◽  
Solar Thermal System ◽  
First Time ◽  
Thermal Stability Of

The solar selective absorber coating (SSAC) are at the core of the efficient solar-thermal system. In this paper, for the first time, the Chromium-iron oxidation mixture cermet was successfully prepared on the surface of ultra-pure ferritic stainless steel by chemical coloring as SSAC. The coating surface has an optical trap structure, and the chromium-iron oxidation mixture cermet is used as an absorption layer to realize solar-thermal conversion. The solar absorptance (AM1.5) of the coating reached 93.66, and the thermal emittance was less than 13. After thermal shock tests at 25/300 °C done 32 times (accumulated 812.8 h), the Performance Criterion (PC) of the coating was 0.01375 < 0.05, showing outstanding thermal stability.

Thermal stability of WAlN/WAlON/Al2O3-based solar selective absorber coating

MRS Advances ◽  
2016 ◽  
Vol 1 (41) ◽  
pp. 2807-2813 ◽  
Author(s):  
Atasi Dan ◽  
Kamanio Chattopadhyay ◽  
Harish C. Barshilia ◽  
Bikramjit Basu
Keyword(s):  
Thermal Stability ◽  
Stainless Steel ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Rf Magnetron Sputtering ◽  
Thermal Conversion ◽  
Solar Absorptance ◽  
Excellent Thermal Stability ◽  
Oxidation In Air ◽  
Thermal Stability Of

AbstractThe solar absorptance property of W/WAlN/WAlON/Al2O3-based coatings, deposited by DC/RF magnetron sputtering on stainless steel substrate was studied by measuring the reflectance spectra in the wavelength range of 250 - 2500 nm. The effect of thermal annealing on the optical properties of the solar selective absorber coatings was investigated. Annealing the coatings at 450°C for 150 hrs in air did not show any significant change in the spectral properties of the absorber coating indicating the excellent thermal stability of the coating. The W layer acts as infrared reflective layer and diffusion barrier on stainless steel substrate. The top Al2O3 layer serves as dense shield to protect the under layers from oxidation in air. In summary, the present study indicates the potential application of W/WAlN/WAlON/Al2O3-based selective coatings in high temperature photo thermal conversion systems.

Nickel nanoparticles individually encapsulated in densified ceramic shells for thermally stable solar energy absorption

2019 ◽  
Vol 7 (7) ◽  
pp. 3039-3045 ◽  
Author(s):  
Dawei Ding ◽  
Kai Liu ◽  
Qikui Fan ◽  
Bitao Dong ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Solar Energy ◽  
Energy Absorption ◽  
Nickel Nanoparticles ◽  
Thermal Conversion ◽  
Solar Thermal ◽  
Thermally Stable ◽  
Spectrally Selective ◽  
Thermal Stability Of

Encapsulation of nickel nanoparticles in densified silica nanoshells enhances the thermal stability of spectrally selective absorbers for high-temperature solar-thermal conversion systems.

scholarly journals First thermal studies on visible-light-switchable negative T-type photochromes of a nitrile-rich series

RSC Advances ◽  
2021 ◽  
Vol 11 (34) ◽  
pp. 21097-21103
Author(s):  
Mikhail Yu. Belikov ◽  
Mikhail Yu. Ievlev
Keyword(s):  
Thermal Stability ◽  
Visible Light ◽  
Temperature Effect ◽  
Thermal Studies ◽  
First Time ◽  
Thermal Stability Of

The temperature effect on the thermal stability of both the initial and photoinduced forms of nitrile-rich T-type photochromes was studied for the first time.

scholarly journals Optimization of Polyamide Pulp-Reinforced Silica Aerogel Composites for Thermal Protection Systems

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1278
Author(s):  
Mariana E. Ghica ◽  
Cláudio M.R. Almeida ◽  
Mariana Fonseca ◽  
António Portugal ◽  
Luísa Durães
Keyword(s):  
Thermal Stability ◽  
Thermal Protection ◽  
Molar Ratio ◽  
Experimental Procedure ◽  
Thermal Protection Systems ◽  
Protection Systems ◽  
Density Values ◽  
Polyamide Fibers ◽  
First Time ◽  
Thermal Stability Of

The present work describes for the first time the preparation of silica-based aerogel composites containing tetraethoxysilane (TEOS) and vinyltrimethoxysilane (VTMS) reinforced with Kevlar® pulp. The developed system was extensively investigated, regarding its physical, morphological, thermal and mechanical features. The obtained bulk density values were satisfactory, down to 208 kg·m−3, and very good thermal properties were achieved—namely a thermal conductivity as low as 26 mW·m−1·K−1 (Hot Disk®) and thermal stability up to 550 °C. The introduction of VTMS offers a better dispersion of the polyamide fibers, as well as a higher hydrophobicity and thermal stability of the composites. The aerogels were also able to withstand five compression-decompression cycles without significant change of their size or microstructure. A design of experiment (DOE) was performed to assess the influence of different synthesis parameters, including silica co-precursors ratio, pulp amount and the solvent/Si molar ratio on the nanocomposite properties. The data obtained from the DOE allowed us to understand the significance of each parameter, offering reliable guidelines for the adjustment of the experimental procedure in order to achieve the optimum properties of the studied aerogel composites.

Tuning the photochromic properties of chromophores containing a nitrile-rich acceptor: a novel branch in the investigation of negative photochromes

2019 ◽  
Vol 43 (22) ◽  
pp. 8414-8417 ◽  
Author(s):  
Mikhail Yu. Belikov ◽  
Mikhail Yu. Ievlev ◽  
Sergey V. Fedoseev ◽  
Oleg V. Ershov
Keyword(s):  
Thermal Stability ◽  
Photochromic Properties ◽  
Photoinduced Form ◽  
First Time ◽  
Thermal Stability Of

High photoswitching contrast and variation of the thermal stability of the photoinduced form for a novel group of reverse photochromes are described for the first time.

Theoretical study on thermal stability of molten salt for solar thermal power

2013 ◽  
Vol 54 (1) ◽  
pp. 140-144 ◽  
Author(s):  
Xiaolan Wei ◽  
Qiang Peng ◽  
Jing Ding ◽  
Xiaoxi Yang ◽  
Jianping Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Molten Salt ◽  
Theoretical Study ◽  
Thermal Power ◽  
Solar Thermal ◽  
Solar Thermal Power ◽  
Thermal Stability Of

Synergistic effect of fluorination and regio-regularity on the long-term thermal stability of polymer solar cells

2016 ◽  
Vol 4 (47) ◽  
pp. 18598-18606 ◽  
Author(s):  
Zidong Li ◽  
Tong Zhang ◽  
Yue Xin ◽  
Xiaoli Zhao ◽  
Dalei Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Synergistic Effect ◽  
Polymer Solar Cells ◽  
First Time ◽  
Thermal Stability Of

The synergistic effect of fluorination and regio-regularity is proposed for the first time to realize the long-term thermal stability of polymer solar cells.

High Thermal Stability of Mo/Si3N4/Mo/Si3N4/SiO2 Multilayer Solar Selective Coatings

2015 ◽  
Vol 1102 ◽  
pp. 67-71 ◽  
Author(s):  
Rui Hua Yang ◽  
Jin Yang Liu ◽  
Li Mei Lin ◽  
Fa Chun Lai ◽  
Yan Qu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Multilayer Structure ◽  
High Thermal Stability ◽  
Solar Absorptance ◽  
Selective Coating ◽  
Thermal Emittance ◽  
Quartz Substrates ◽  
Thermal Stability Of

In terms of good optical properties and high thermal stability, Mo/Si3N4/Mo/Si3N4/SiO2 coatings based on metal/dielectric multilayer structure were adapted to the solar selective coating at high operating temperatures. The coatings exhibited high solar absorptance in the range of 0.924 ~ 0.936 and low thermal emittance of 0.114 ~ 0.118. The coatings deposited on quartz substrates were thermally stable up to 625 °C in air for 2 h, while they were degraded at 650 °C from the characterization of the absorptance and emittance. The degradation of the coatings was mainly due to the oxidation of molybdenum in air, which was confirmed by Raman spectroscopy. Compared with the thermal stability in air, the coatings were much more stable in vacuum under high temperature. The remarkable thermal stability of the Mo/Si3N4/Mo/Si3N4/SiO2 coatings in air and in vacuum makes them suitable to be applied at high temperature applications.

Angular solar absorptance and thermal stability of Mo–SiO 2 double cermet solar selective absorber coating

Solar Energy ◽  
2015 ◽  
Vol 115 ◽  
pp. 341-346 ◽  
Author(s):  
Liqing Zheng ◽  
Fuyun Zhou ◽  
Zhuangda Zhou ◽  
Xingwang Song ◽  
Guobo Dong ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Absorptance ◽  
Thermal Stability Of
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