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%0 Thesis
%A Aarab, Fadoua
%T Entwicklung und Charakterisierung salzkorrosionsresistenter ferritischer Edelstähle zur Anwendung in solarthermischen Kraftwerken
%I Rheinisch-Westfälische Technische Hochschule Aachen
%V Dissertation
%C Aachen
%M RWTH-2024-10454
%P 1 Online-Ressource : Illustrationen
%D 2024
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2025
%Z Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2024
%X The aim of the present work is the development and characterization of salt corrosion resistant, cost-effective steels for application in solar thermal power plants. The base of the alloy development is the fully ferritic high-performance steel called HiperFer (High performance Ferrite) developed at Forschungszentrum Jülich (IEK-2), which is known for its good thermomechanical fatigue strength, steam oxidation resistance and creep resistance. Concentrating solar power (CSP) and thermal energy storage (TES) based on molten salts are still not economically feasible, with material investment costs being a major drawback. Ferritic stainless steels are a comparatively inexpensive class of materials that can contribute significantly to cost reduction. The addition of aluminium to ferritic stainless steel can lead to self-passivation by formation of a compact Al2O3 top layer, which has significantly higher corrosion resistance to solar salt compared to the Cr2O3 top layers that typically form on expensive structural alloys (like austenitic steels and Ni-base alloys) for CSP and TES. Cyclic salt corrosion tests under flowing synthetic air were performed on ferritic experimental alloys (17Cr2-14Al0.6-1Nb2.6-4W0.25Si) using solar salt (60 wt.-
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.18154/RWTH-2024-10454
%U https://publications.rwth-aachen.de/record/996219