Optical properties and corrosion resistance of Ti2AlC, Ti3AlC2, and Cr2AlC as candidates for concentrated solar power receivers

Year: 2023

Authors: Azina C., Badie S., Litnovsky A., Silvestroni L., Sani E., Gonzalez-Julian J.

Autors Affiliation: RWTH Aachen University; Consiglio Nazionale delle Ricerche (CNR); Consiglio Nazionale delle Ricerche (CNR); Istituto Nazionale di Ottica (INO-CNR); RWTH Aachen University

Abstract: New generation concentrated solar power (CSP) plants require new solar receiver materials with selective optical properties and excellent corrosion resistance against molten salts. MAX phases are promising materials for CSP applications due to their optical properties and resistance to thermal shocks. Herein, we report a solar absorptance & GE;0.5 and a thermal emittance of 0.17-0.31 between 600 and 1500 K for Cr2AlC, Ti2AlC, and Ti3AlC2. These compositions were also exposed to solar salt corrosion at 600 degrees C for up to 4 weeks. Cr2AlC exhibited superior corrosion resistance due to the formation of a protective nanometric layer.

Journal/Review: SOLAR ENERGY MATERIALS AND SOLAR CELLS

Volume: 259      Pages from: 112433-1  to: 112433-6

More Information: Prof. Jochen M. Schneider for access to the Focused Ion Beam (FIB) . C.A. acknowledges funding from the European Union’s H2020-MSCA-IF-2019 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 892501 (REALMAX) . The authors would like to thank Ms Melina Poll for sintering the samples and
KeyWords: MAX phases; Concentrated solar power; Corrosion; Optical properties
DOI: 10.1016/j.solmat.2023.112433

Citations: 9
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