Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers

Abstract This study investigates the effects of Multistage Heat Treatment (MSHT) on the development of an oxide-scale layer on the surface of FeCrAl sintered-metal-fibers. The oxide-scale layer was developed using an MSHT cycle at 930 °C for 1 h, followed by 960 °C for 1 h, and finally at 990 °C for...

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Autores principales:	Osama M. Ibrahim, Abdullah A. Alazemi, Loai Ben Naji
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d31a688d87b841a6ab79b1fa8fecc828
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spelling	oai:doaj.org-article:d31a688d87b841a6ab79b1fa8fecc8282021-12-02T14:01:23ZMultistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers10.1038/s41598-020-80888-92045-2322https://doaj.org/article/d31a688d87b841a6ab79b1fa8fecc8282021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80888-9https://doaj.org/toc/2045-2322Abstract This study investigates the effects of Multistage Heat Treatment (MSHT) on the development of an oxide-scale layer on the surface of FeCrAl sintered-metal-fibers. The oxide-scale layer was developed using an MSHT cycle at 930 °C for 1 h, followed by 960 °C for 1 h, and finally at 990 °C for 2 h. In this study, three samples were considered: Sample 1 was kept without thermal oxidation, while Samples 2 and 3 were exposed to one and eighteen MSHT cycles. Thermo-gravimetric analyses show that the weight gain of the heat-treated sample slows with time, confirming the growth of the protective oxide-scale layer. Scanning electron microscope images, after one MSHT cycle, reveal nonuniform oxide-scale growth with platelet-like on the surface. After eighteen MSHT cycles, however, clumped particles formed on the surface of the fibers. Atomic force microscopy was utilized to study the surface topography of the fibers. The results show that MSHT increases the surface roughness, where the surface roughness of one and eighteen MSHT cycles are the same. The x-ray diffraction analyses of the baseline sample and the sample with one MSHT cycle show pattern peaks of crystalline Fe2CrAl. In contrast, the results of eighteen MSHT cycles displayed diffraction pattern peaks of crystalline Cr and stable α-Al2O3. In summary, the results of this study reveal the changing nature of the oxide-scale layer. The findings of this study form the foundation for new techniques to protect and prepare the FeCrAl fibers as a support for catalysts.Osama M. IbrahimAbdullah A. AlazemiLoai Ben NajiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Osama M. Ibrahim Abdullah A. Alazemi Loai Ben Naji Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
description	Abstract This study investigates the effects of Multistage Heat Treatment (MSHT) on the development of an oxide-scale layer on the surface of FeCrAl sintered-metal-fibers. The oxide-scale layer was developed using an MSHT cycle at 930 °C for 1 h, followed by 960 °C for 1 h, and finally at 990 °C for 2 h. In this study, three samples were considered: Sample 1 was kept without thermal oxidation, while Samples 2 and 3 were exposed to one and eighteen MSHT cycles. Thermo-gravimetric analyses show that the weight gain of the heat-treated sample slows with time, confirming the growth of the protective oxide-scale layer. Scanning electron microscope images, after one MSHT cycle, reveal nonuniform oxide-scale growth with platelet-like on the surface. After eighteen MSHT cycles, however, clumped particles formed on the surface of the fibers. Atomic force microscopy was utilized to study the surface topography of the fibers. The results show that MSHT increases the surface roughness, where the surface roughness of one and eighteen MSHT cycles are the same. The x-ray diffraction analyses of the baseline sample and the sample with one MSHT cycle show pattern peaks of crystalline Fe2CrAl. In contrast, the results of eighteen MSHT cycles displayed diffraction pattern peaks of crystalline Cr and stable α-Al2O3. In summary, the results of this study reveal the changing nature of the oxide-scale layer. The findings of this study form the foundation for new techniques to protect and prepare the FeCrAl fibers as a support for catalysts.
format	article
author	Osama M. Ibrahim Abdullah A. Alazemi Loai Ben Naji
author_facet	Osama M. Ibrahim Abdullah A. Alazemi Loai Ben Naji
author_sort	Osama M. Ibrahim
title	Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
title_short	Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
title_full	Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
title_fullStr	Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
title_full_unstemmed	Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers
title_sort	multistage heat treatment and the development of a protective oxide-scale layer on the surface of fecral sintered-metal-fibers
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d31a688d87b841a6ab79b1fa8fecc828
work_keys_str_mv	AT osamamibrahim multistageheattreatmentandthedevelopmentofaprotectiveoxidescalelayeronthesurfaceoffecralsinteredmetalfibers AT abdullahaalazemi multistageheattreatmentandthedevelopmentofaprotectiveoxidescalelayeronthesurfaceoffecralsinteredmetalfibers AT loaibennaji multistageheattreatmentandthedevelopmentofaprotectiveoxidescalelayeronthesurfaceoffecralsinteredmetalfibers
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Multistage heat treatment and the development of a protective oxide-scale layer on the surface of FeCrAl sintered-metal-fibers

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