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Silicon nitride – silicon carbide micro/nano-composites – a review

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dc.contributor.author Hampshire, Stuart
dc.contributor.author Kennedy, Tríona
dc.date.accessioned 2021-10-01T11:23:23Z
dc.date.issued 2021
dc.identifier.govdoc 10.1111/ijac.13903
dc.identifier.uri http://hdl.handle.net/10344/10633
dc.description peer-reviewed en_US
dc.description The full text of this article will not be available in ULIR until the embargo expires on the 14/09/2022
dc.description.abstract This paper reviews investigations of silicon nitride–silicon carbide micro–nanocomposites from the original work of Niihara, who proposed the concept of structural ceramic nanocomposites, to more recent work on strength and creep resistance of these unique materials. Various different raw materials are described that lead to the formation of nanosized SiC within the Si3N4 grains (intragranular) and at grain boundaries (intergranular). The latter exert a pinning effect on the amorphous grain boundary phases in the silicon nitride and also act as nucleation sites for β-Si3N4, which limits grain growth during sintering. This finer microstructure results in strengths higher than for the monolithic silicon nitride. Intragranular SiC particles enhance strength and fracture toughness as a result of residual compressive thermal stresses within the nanocomposites. High temperature strength and creep resistance are also much higher than for monolithic silicon nitride and a few investigations of these topics are briefly reviewed and the proposed mechanisms are described. Within the context of other studies cited, work on Si3N4–SiC micro–nanocomposites by the current authors describes an aqueous processing route for better dispersion of commercial powders prior to sintering. en_US
dc.language.iso eng en_US
dc.publisher Wiley and Sons Ltd en_US
dc.relation.ispartofseries International Journal of Applied Ceramic Technology;
dc.relation.uri https://doi.org/10.1111/ijac.13903
dc.rights This is the peer reviewed author version of the following article:Hampshire, S, Kennedy, T. Silicon nitride–silicon carbide micro/nanocomposites: A review. Int J Appl Ceram Technol. 2021; 1– 20, which has been published in final form at https://doi.org/10.1111/ijac.13903 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. http://olabout.wiley.com/WileyCDA/Section/id-828039.html#terms en_US
dc.subject silicon nitride en_US
dc.subject silicon carbide en_US
dc.subject nanocomposites en_US
dc.subject flexural strength en_US
dc.title Silicon nitride – silicon carbide micro/nano-composites – a review en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.embargoEndDate 2022-09-14
dc.embargo.terms 2022-09-14 en_US
dc.rights.accessrights info:eu-repo/semantics/embargoedAccess en_US


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