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Elongation of α‐SiC Particles in Spark Plasma Sintered α‐SiAlON/α‐SiC Composites
Author(s) -
Liu Limeng,
Ye Feng,
Zhang Zhiguo,
Zhou Yu
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04296.x
Subject(s) - spark plasma sintering , sialon , materials science , composite material , fracture toughness , microstructure , flexural strength , elongation , toughness , sintering , ultimate tensile strength
α‐SiAlON/α‐SiC composites with 0–40 wt%α‐SiC were synthesized by spark plasma sintering for 5 min at 1800°C under 20 MPa pressure. A self‐reinforcing microstructure with both elongated α‐SiAlON and α‐SiC grains, was formed. Flexural strength and fracture toughness were significantly improved due to the in situ reinforcement. High fracture toughness up to 8.2 MPa·m 1/2 was obtained in the 40 wt% SiC composition.