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Three‐dimensional Silica Fiber Reinforced Silicon Nitride‐based Composites Fabricated via Different Polysilazanes
Author(s) -
Qi G.,
Zhang C.,
Hu H.,
Cao F.,
Wang S.,
Jiang Y.
Publication year - 2005
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200500104
Subject(s) - materials science , composite material , flexural strength , ceramic matrix composite , silicon nitride , brittleness , fiber , ceramic , silica fiber , pyrolysis , fiber pull out , silicon , composite number , layer (electronics) , composite laminates , fiber laser , engineering , metallurgy , waste management
Three‐dimensional silica fiber reinforced silicon nitride‐based composites were fabricated at 873–1073 K in ammonia using polyhydriomethylsilazane and perhydropolysislazane, respectively. The composites showed high weight pickups during repeated pyrolysis cycles, non‐brittle failure behavior with fiber pull‐out in the fracture surfaces and high flexural strength of 114.5 and 144.9 MPa. It was the good state of silica fibers, controlled fiber/matrix interfaces and dense ceramic matrix that contributed to the high strength of the composites.