Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing



Título del documento: Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312901
ISSN: 1516-1439
Autores: 1
Instituciones: 1Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Rio de Janeiro. Brasil
Año:
Periodo: Abr-Jun
Volumen: 9
Número: 2
Paginación: 143-146
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés This present work evaluates the influence of microstructure on the fracture toughness of two types of silicon nitride. The two microstructural types of silicon nitride were processed using the gas pressure sintering (GPS) and hot pressing (HP) pathways. The fracture toughness was measured using the Single Edge V-Notch Beam (SEVNB) and Chevron Notch Beam (CNB) methods. The results from both methods for the two forms were in close agreement (with a maximum variation of 5.8%); the KIc of the material processed by HP was 35% higher than that of GPS and the grain length had a direct influence on the fracture toughness
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Ingeniería industrial,
Cerámica,
Nitruro de silicio,
Fractura,
Alta temperatura,
Sinterización
Keyword: Engineering,
Industrial engineering,
Materials engineering,
Ceramics,
Silicon nitride,
Fracture,
High temperature,
Sintering
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