ApplicationNo. 06/121081 filed on 02/13/1980
US Classes:428/697, Layer contains compound(s) of plural metals428/107, Strand or strand-portions428/112, Oblique to direction of web428/114, Including grain, strips, or filamentary elements in different layers or components parallel428/293.7, Fibers are aligned substantially parallel428/367, Including free carbon or carbide or therewith (not as steel)428/698, Carbide-, nitride-, or sulfide-containing layer428/902HIGH MODULUS FILAMENT OR FIBER
ExaminersPrimary: Cannon, James C.
Attorney, Agent or Firm
International ClassesC03C 14/00 (20060101)
C04B 35/80 (20060101)
AbstractA silicon carbide fiber reinforced ceramic matrix composite is disclosed having high strength, fracture toughness, and oxidative stability even at high temperature use. The composite is made up of a plurality of ceramic layers, each layer reinforced with a plurality of unidirectional continuous length silicon carbide fibers, each layer having an axial flexural strength greater than 70,000 psi and a high fracture toughness, exemplified by a critical stress intensity factor greater than 10×103 psi (inch)1/2. The composite is formed by starting with the ceramic matrix material in the glassy state and converting it from the glassy state to the ceramic state after densification of the composite.
Field of SearchIncluding free carbon or carbide or therewith (not as steel)
HIGH MODULUS FILAMENT OR FIBER
Strand or strand-portions
Oblique to direction of web
Including grain, strips, or filamentary elements in different layers or components parallel
Layer contains compound(s) of plural metals
Carbide-, nitride-, or sulfide-containing layer