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Title: Preparation of silicon carbide fibers

Abstract

Silicon carbide fibers suitable for use in the fabrication of dense, high-strength, high-toughness SiC composites or as thermal insulating materials in oxidizing environments are fabricated by a new, simplified method wherein a mixture of short-length rayon fibers and colloidal silica is homogenized in a water slurry. Water is removed from the mixture by drying in air at 120/sup 0/C and the fibers are carbonized by (pyrolysis) heating the mixture to 800 to 1000/sup 0/C in argon. The mixture is subsequently reacted at 1550 to 1900/sup 0/C in argon to yield pure ..beta..-SiC fibers.

Inventors:
Publication Date:
OSTI Identifier:
6705311
Alternate Identifier(s):
OSTI ID: 6705311; Legacy ID: DE84014661
Application Number:
ON: DE84014661
Assignee:
Dept. of Energy ERA-09-037972; EDB-84-130318
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SILICON CARBIDES; PRODUCTION; FIBERS; PYROLYSIS; RAYON; SILICON OXIDES; CARBIDES; CARBOHYDRATES; CARBON COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLYSACCHARIDES; SACCHARIDES; SILICON COMPOUNDS; THERMOCHEMICAL PROCESSES 360201* -- Ceramics, Cermets, & Refractories-- Preparation & Fabrication

Citation Formats

Wei, G.C.. Preparation of silicon carbide fibers. United States: N. p., 1983. Web.
Wei, G.C.. Preparation of silicon carbide fibers. United States.
Wei, G.C.. Wed . "Preparation of silicon carbide fibers". United States.
@article{osti_6705311,
title = {Preparation of silicon carbide fibers},
author = {Wei, G.C.},
abstractNote = {Silicon carbide fibers suitable for use in the fabrication of dense, high-strength, high-toughness SiC composites or as thermal insulating materials in oxidizing environments are fabricated by a new, simplified method wherein a mixture of short-length rayon fibers and colloidal silica is homogenized in a water slurry. Water is removed from the mixture by drying in air at 120/sup 0/C and the fibers are carbonized by (pyrolysis) heating the mixture to 800 to 1000/sup 0/C in argon. The mixture is subsequently reacted at 1550 to 1900/sup 0/C in argon to yield pure ..beta..-SiC fibers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 1983},
month = {Wed Oct 12 00:00:00 EDT 1983}
}