Premium
Effect of Cr 3 C 2 Addition on the Sintering of SiC‐TiC Composite
Author(s) -
Chae KiWoong,
Niihara Koichi,
Kim DohYeon
Publication year - 1996
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.1151-2916.1996.tb08109.x
Subject(s) - materials science , sintering , fracture toughness , hot pressing , composite material , composite number , phase (matter) , flexural strength , silicon carbide , pressureless sintering , pressing , chemistry , organic chemistry
The densification behavior and mechanical properties of SiC‐30TiC (in volume percent) composites prepared with Cr 3 C 2 additive were investigated. By hot‐pressing a SiC‐30TiC‐lCr 3 C 2 specimen at 1950°C, 98.5% of theoretical density was achieved and the specimen exhibited a fracture strength of 750 MPa. For the SiC‐30TiC‐10Cr 3 C 2 specimen, (β‐α transformation of SiC was observed to occur during hot‐pressing and in situ growth of elongated α‐SiC grains resulted in an increase of fracture toughness. Micro‐structural observations using high‐resolution TEM indi‐cated that no liquid phase was present at the interfaces.