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Characterization of solar-aged porous silicon carbide for concentrated solar power receivers

TitleCharacterization of solar-aged porous silicon carbide for concentrated solar power receivers
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2021
AuthorsCañadas, I., Candelario V.M., De Aloysio G., Fernández J., Laghi L., Cuesta-López S., Chen Y., T. Marrow James, Rinaldi Antonio, Sanchez A.M., Tatì Angelo, and Testani C.
KeywordsAccelerated ageing, Ageing conditions, Ceramic materials, Computed X-ray tomographies, Concentrated solar power, Light flash method, Nondestructive characterization, Nondestructive examination, Porous silicon, Silicon carbide, Solar furnaces, Solar power generation, Specific heat, Thermal aging, Thermophysical characterization, Ultrasonic inspections, Ultrasonic testing

Porous silicon carbide is a promising material for ceramic receivers in next-generation concentrated solar power receivers. To investigate its tolerance to thermal shock, accelerated ageing of large coupons (50 × 50 × 5 mm) was conducted in a solar furnace to investigate the effects of thermal cycling up to 1000 °C, with gradients of up to 22 °C/mm. Non-destructive characterization by computed X-ray tomography and ultrasonic inspection could detect cracking from thermal stresses, and this informed the preparation of valid specimens for thermophysical characterization. The effect of thermal ageing on transient thermal properties, as a function of temperature, was investigated by using the light-flash method. The thermophysical properties were affected by increasing the severity of the ageing conditions; thermal diffusivity decreased by up to 10% and specific heat by up to 5%. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.


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Citation KeyCañadas2021