Millisecond photonic sintering of iron oxide doped alumina ceramic coatings

Abstract The sintering of alumina (Al2O3) traditionally occurs at high temperatures (up to ca. 1700 °C) and in significantly long times (up to several hours), which are required for the consolidation of the material by diffusion processes. Here we investigate the photonic sintering of alumina partic...

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Autores principales:	Evgeniia Gilshtein, Stefan Pfeiffer, Marta D. Rossell, Jordi Sastre, Lovro Gorjan, Rolf Erni, Ayodhya N. Tiwari, Thomas Graule, Yaroslav E. Romanyuk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/71a663cda5354f74bb124a2a355858e4
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spelling	oai:doaj.org-article:71a663cda5354f74bb124a2a355858e42021-12-02T12:09:51ZMillisecond photonic sintering of iron oxide doped alumina ceramic coatings10.1038/s41598-021-82896-92045-2322https://doaj.org/article/71a663cda5354f74bb124a2a355858e42021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82896-9https://doaj.org/toc/2045-2322Abstract The sintering of alumina (Al2O3) traditionally occurs at high temperatures (up to ca. 1700 °C) and in significantly long times (up to several hours), which are required for the consolidation of the material by diffusion processes. Here we investigate the photonic sintering of alumina particles using millisecond flash lamp irradiation with extreme heating rates up to 108 K/min. The limitation of the low visible light absorption of alumina is resolved by adding colored α-Fe2O3 nanoparticles, which initiated the grain growth during sintering. After the millisecond-long light pulses from a xenon flash lamp, a bimodal mixture of α-Al2O3 precursor particles was sintered and iron segregation at the grain boundaries was observed. The proposed photonic sintering approach based on doping with colored centers may be extended to other refractory ceramics with low absorption in the visible light range once appropriate high-absorbing dopants are identified.Evgeniia GilshteinStefan PfeifferMarta D. RossellJordi SastreLovro GorjanRolf ErniAyodhya N. TiwariThomas GrauleYaroslav E. RomanyukNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evgeniia Gilshtein Stefan Pfeiffer Marta D. Rossell Jordi Sastre Lovro Gorjan Rolf Erni Ayodhya N. Tiwari Thomas Graule Yaroslav E. Romanyuk Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
description	Abstract The sintering of alumina (Al2O3) traditionally occurs at high temperatures (up to ca. 1700 °C) and in significantly long times (up to several hours), which are required for the consolidation of the material by diffusion processes. Here we investigate the photonic sintering of alumina particles using millisecond flash lamp irradiation with extreme heating rates up to 108 K/min. The limitation of the low visible light absorption of alumina is resolved by adding colored α-Fe2O3 nanoparticles, which initiated the grain growth during sintering. After the millisecond-long light pulses from a xenon flash lamp, a bimodal mixture of α-Al2O3 precursor particles was sintered and iron segregation at the grain boundaries was observed. The proposed photonic sintering approach based on doping with colored centers may be extended to other refractory ceramics with low absorption in the visible light range once appropriate high-absorbing dopants are identified.
format	article
author	Evgeniia Gilshtein Stefan Pfeiffer Marta D. Rossell Jordi Sastre Lovro Gorjan Rolf Erni Ayodhya N. Tiwari Thomas Graule Yaroslav E. Romanyuk
author_facet	Evgeniia Gilshtein Stefan Pfeiffer Marta D. Rossell Jordi Sastre Lovro Gorjan Rolf Erni Ayodhya N. Tiwari Thomas Graule Yaroslav E. Romanyuk
author_sort	Evgeniia Gilshtein
title	Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
title_short	Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
title_full	Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
title_fullStr	Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
title_full_unstemmed	Millisecond photonic sintering of iron oxide doped alumina ceramic coatings
title_sort	millisecond photonic sintering of iron oxide doped alumina ceramic coatings
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/71a663cda5354f74bb124a2a355858e4
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Millisecond photonic sintering of iron oxide doped alumina ceramic coatings

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