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High Temperature Mechanical Properties of Dense AlN–SiC Ceramics Fabricated by Spark Plasma Sintering Without Sintering Additives
Author(s) -
Kobayashi Ryota,
Tatami Junichi,
Wei Chen I.,
Wakihara Toru,
Komeya Katsutoshi,
Meguro Takeshi,
Goto Takashi,
Tu Rong
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.1551-2916.2011.04901.x
Subject(s) - spark plasma sintering , materials science , sintering , ceramic , flexural strength , fracture toughness , composite material , microstructure , hexagonal crystal system , chemistry , crystallography
Dense AlN–SiC solid solution ceramics with 25–75 mol% AlN were fabricated by spark plasma sintering using hexagonal SiC and AlN powders without additives. The bending strength reaches 800 MPa at room temperature with a fracture toughness of about 5 MPa·m 1/2 . The high bending strength can be retained at high temperatures, maintaining over 400 MPa at 1700°C.