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Fabrication and Characterization of Three‐Dimensional Carbon Fiber Reinforced Silicon Carbide and Silicon Nitride Composites
Author(s) -
Nakano Kikuo,
Kamiya Akira,
Nishino Yoichi,
Imura Toru,
Chou TsuWei
Publication year - 1995
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.1151-2916.1995.tb08058.x
Subject(s) - materials science , composite material , flexural strength , silicon carbide , fracture toughness , porosity , chemical vapor infiltration , fabrication , slurry , composite number , organosilicon , medicine , alternative medicine , pathology , polymer chemistry
Three‐dimensional (3D) carbon fiber reinforced SiC and Si 3 N 4 composites have been fabricated using repeated infiltration of an organosilicon slurry under vacuum and pressure. Open porosity of the infiltrated body was reduced from 40% after the first infiltration to approximately 8% after the seventh cycle. Further reduction of open porosity to less than 3% was accomplished by hot‐press densification. The maximum values of flexural strength and fracture toughness were, respectively, 260 MPa and 7.3 MPa·m 1/2 for C/Si 3 N 4 composites, and 185 MPa and 6 MPa·m 1/2 for C/SiC composite.