Silicon nitride–silicon carbide micro/nanocomposites: A review
نویسندگان
چکیده
This paper reviews investigations of silicon nitride–silicon carbide micro–nanocomposites from the original work Niihara, who proposed concept structural ceramic nanocomposites, to more recent on strength and creep resistance these unique materials. Various different raw materials are described that lead formation nanosized SiC within Si3N4 grains (intragranular) at grain boundaries (intergranular). The latter exert a pinning effect amorphous boundary phases in nitride also act as nucleation sites for β-Si3N4, which limits growth during sintering. finer microstructure results strengths higher than monolithic nitride. Intragranular particles enhance fracture toughness result residual compressive thermal stresses nanocomposites. High temperature much few topics briefly reviewed mechanisms described. Within context other studies cited, Si3N4–SiC by current authors describes an aqueous processing route better dispersion commercial powders prior
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ژورنال
عنوان ژورنال: International Journal of Applied Ceramic Technology
سال: 2021
ISSN: ['1744-7402', '1546-542X']
DOI: https://doi.org/10.1111/ijac.13903