Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

Xu, Xin; Wang, Dongbin; Rao, Zhenggang; Wu, Jianfeng; Liu, Xing; Zhang, Chen

doi:10.1007/s41779-020-00537-2

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…The susceptibility of carbides and borides ceramics to oxidation necessitated the addition of protective coatings and vacuum apparatus. 35,37,38 Therefore, it remains essential to investigate absorber materials capable of simultaneously meeting optical and thermal stability requirements. 39,40 Recently, La 0.5 Sr 0.5 CoO 3-δ (LSC5) exhibited notable solar selective absorption compared with other ceramics.…”

Section: Introductionmentioning

confidence: 99%

Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Xie,

Gao,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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As a key device for solar energy conversion, solar absorbers play a critical role in improving the operating temperature of concentrated solar power (CSP) systems. However, solar absorbers with high spectral selectivity and good thermal stability at high temperatures in air are still scarce. This study presents a novel surface reconstruction strategy to improve the spectral selectivity of La0.5Sr0.5CoO3‑δ (LSC5) for enhanced CSP application. The strategy could efficiently enhance the solar absorptance due to the existence of a high-absorption thin layer composed of nanoparticles on the LSC5 surface. Meanwhile, the crystal facet with low emittance on the LSC5 surface was exposed. Thus, the LSC5 that underwent surface reconstruction achieved a higher solar absorptance (∼0.75) and lower infrared emittance (∼0.19) compared to the original LSC5 (0.63/0.21), representing an improvement of nearly 32%. Additionally, the surface reconstructed LSC5 demonstrated a lower infrared thermographic temperature and a higher solar–thermal conversion equilibrium temperature compared to those of LSC5 and SiC. Moreover, the reconstructed LSC5 could maintain stable performance up to 800 °C in air, which might simplify the complexity of the CSP systems. The surface reconstruction strategy provided a new method to optimize the spectral selectivity of high-temperature stable ceramics, contributing to advancements in solar energy conversion technologies.

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Section: Introductionmentioning

confidence: 99%

Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Xie,

Gao,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…In the last decades, β-SiAlON ceramics have been extensively studied due to their excellent strength, toughness, and sintering properties [1][2][3]. The general formula of β-SiAlON, solid solution based on β-Si 3 N 4 , is given as Si 6-z Al z O z N 8-z (0 ≤ z ≤ 4.2), where z value corresponds to the extent of the Al-O bonds dissolved in the Si 3 N 4 structure [4].…”

Section: Introductionmentioning

confidence: 99%

Preparation of porous β-SiAlON ceramics using corn starch as pore-forming agent

Liu

Chen

et al. 2022

J Aust Ceram Soc

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In this study, porous β-SiAlON ceramics were prepared by starch consolidation using corn starch as a pore-forming agent. The effect of corn starch content (10 wt.%, 20 wt.%, and 30 wt.%) on the microstructure, apparent porosity, compressive strength, and dielectric properties of porous β-SiAlON ceramics was investigated. It was observed that both β-SiAlON and corundum phases were present in the prepared porous β-SiAlON ceramics. Meanwhile, the SEM results revealed that the hierarchical pore structures were formed as the corn content was enhanced. Increasing the corn starch content from 10 to 30 wt.% enhanced the apparent porosity from 53 to 64%, whereas the compressive strength decreased from 6.5 to 3.8 MPa. The porous β-SiAlON ceramics consisting of 60 wt.% solid content and 30 wt.% corn starch possessed porosity of 64%, reasonable compressive strength of 3.8 MPa, low dielectric constant of 3.0, and low dielectric loss tangent of 0.0046. Overall, the obtained results confirm that the starch consolidation method is a simple and convenient approach for preparing porous β-SiAlON ceramics with potential application in the field of radome.

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Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

Ogunbiyi,

Jamiru,

Adekoya

et al. 2024

J Aust Ceram Soc

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Oxonitridoaluminosilicates (SiAlON) are renowned in advanced ceramics for their exceptional properties: high temperature stability, excellent oxidation resistance, and good wear resistance. Incorporating micro- and nano-sized fillers into SiAlON matrices enhances their properties, yielding SiAlON composite materials with superior mechanical, tribological, and thermal characteristics. This review examines fabrication techniques for producing SiAlON micro/nanocomposites and the structure-property relationships governing their performance across different phase compositions (β, α, X, and O-phases). A comprehensive literature review scrutinized fabrication techniques and structure-property relationships from various databases and scholarly articles. Although SiAlON composites with micro/nano inclusions hold promise across applications, understanding their fabrication processes, structure-property relationships, and potential applications in different fields is crucial. The review highlights diverse fabrication techniques for SiAlON micro/nanocomposites and provides insights into their structure-property relationships. Additionally, emerging applications in structural domains, cutting tools, coatings, corrosion protection, solar cells, LEDs, biomedical realms, and filtration membranes are discussed. This review is a valuable resource for researchers and engineers interested in designing SiAlON products tailored for sophisticated applications. It emphasizes understanding fabrication processes and structure-property relationships to unlock SiAlON-based materials' full potential across industries.

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Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

Cited by 5 publications

References 22 publications

Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Preparation of porous β-SiAlON ceramics using corn starch as pore-forming agent

Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

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Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

Cited by 5 publications

References 22 publications

Surface Reconstruction of La0.5Sr0.5CoO3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Surface Reconstruction of La0.5Sr0.5CoO3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Preparation of porous β-SiAlON ceramics using corn starch as pore-forming agent

Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

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Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion

Surface Reconstruction of La_0.5Sr_0.5CoO_3-δ Ceramic toward High Solar Selectivity for High-Temperature Air-Stable Solar–Thermal Conversion