Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders

High quality α/β-Sialon materials were reproducible prepared using cost effective silicon nitride powders and an aqueous processing route. The influence of the powder quality (SN-E10, Silzot HQ, SicoNide P95H) on sintering and phase formation was investigated. With all 3 powders dense Sialon materia...

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Autores principales:	Eveline Zschippang, Fabian Loepthien, Anne-Kathrin Wolfrum, Björn Matthey, Kerstin Sempf, Mathias Herrmann
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Sialon Aqueous processing Cost effective silicon nitride powders Microstructure formation Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/21afb1b7dd7c4353bac0d325f5d5cab3
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spelling	oai:doaj.org-article:21afb1b7dd7c4353bac0d325f5d5cab32021-11-26T04:41:09ZMicrostructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders2666-539510.1016/j.oceram.2021.100199https://doaj.org/article/21afb1b7dd7c4353bac0d325f5d5cab32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666539521001450https://doaj.org/toc/2666-5395High quality α/β-Sialon materials were reproducible prepared using cost effective silicon nitride powders and an aqueous processing route. The influence of the powder quality (SN-E10, Silzot HQ, SicoNide P95H) on sintering and phase formation was investigated. With all 3 powders dense Sialon materials with nominal composition RxSi12-(m + n)Alm + nOnN16-n and m = 0.5 and n = 1 and 4 wt% excess rare earth additives could be prepared. The material based on Silzot HQ exhibits the highest α-Sialon content and subsequently the highest hardness due to the lower oxygen content of the starting powder.The microstructural analysis using XRD, FESEM including EDX- and EBSD-mapping reveal, that the α-Sialon grains are formed on existing α-Si3N4 grains of the starting powder. Anisotropic grain growth of the α-Sialon takes place therefore the differences in the microstructure depend strongly on the oxygen content but not from the α/β-content of the starting powders.Eveline ZschippangFabian LoepthienAnne-Kathrin WolfrumBjörn MattheyKerstin SempfMathias HerrmannElsevierarticleSialonAqueous processingCost effective silicon nitride powdersMicrostructure formationClay industries. Ceramics. GlassTP785-869ENOpen Ceramics, Vol 8, Iss , Pp 100199- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sialon Aqueous processing Cost effective silicon nitride powders Microstructure formation Clay industries. Ceramics. Glass TP785-869
spellingShingle	Sialon Aqueous processing Cost effective silicon nitride powders Microstructure formation Clay industries. Ceramics. Glass TP785-869 Eveline Zschippang Fabian Loepthien Anne-Kathrin Wolfrum Björn Matthey Kerstin Sempf Mathias Herrmann Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
description	High quality α/β-Sialon materials were reproducible prepared using cost effective silicon nitride powders and an aqueous processing route. The influence of the powder quality (SN-E10, Silzot HQ, SicoNide P95H) on sintering and phase formation was investigated. With all 3 powders dense Sialon materials with nominal composition RxSi12-(m + n)Alm + nOnN16-n and m = 0.5 and n = 1 and 4 wt% excess rare earth additives could be prepared. The material based on Silzot HQ exhibits the highest α-Sialon content and subsequently the highest hardness due to the lower oxygen content of the starting powder.The microstructural analysis using XRD, FESEM including EDX- and EBSD-mapping reveal, that the α-Sialon grains are formed on existing α-Si3N4 grains of the starting powder. Anisotropic grain growth of the α-Sialon takes place therefore the differences in the microstructure depend strongly on the oxygen content but not from the α/β-content of the starting powders.
format	article
author	Eveline Zschippang Fabian Loepthien Anne-Kathrin Wolfrum Björn Matthey Kerstin Sempf Mathias Herrmann
author_facet	Eveline Zschippang Fabian Loepthien Anne-Kathrin Wolfrum Björn Matthey Kerstin Sempf Mathias Herrmann
author_sort	Eveline Zschippang
title	Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
title_short	Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
title_full	Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
title_fullStr	Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
title_full_unstemmed	Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
title_sort	microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/21afb1b7dd7c4353bac0d325f5d5cab3
work_keys_str_mv	AT evelinezschippang microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders AT fabianloepthien microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders AT annekathrinwolfrum microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders AT bjornmatthey microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders AT kerstinsempf microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders AT mathiasherrmann microstructureformationofabsialonspreparedviaanaqueousprocessingrouteandfromcosteffectivesiliconnitridepowders
_version_	1718409766614597632

Microstructure formation of α/β-sialons prepared via an aqueous processing route and from cost effective silicon nitride powders

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