Method for forming fibrous silicon carbide insulating material

Wei, George C

Title: Method for forming fibrous silicon carbide insulating material

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Abstract

A method whereby silicon carbide-bonded SiC fiber composites are prepared from carbon-bonded C fiber composites is disclosed. Carbon-bonded C fiber composite material is treated with gaseous silicon monoxide generated from the reaction of a mixture of colloidal silica and carbon black at an elevated temperature in an argon atmosphere. The carbon in the carbon bond and fiber is thus chemically converted to SiC resulting in a silicon carbide-bonded SiC fiber composite that can be used for fabricating dense, high-strength high-toughness SiC composites or as thermal insulating materials in oxidizing environments.

Inventors:

Wei, George C ^[1]

Oak Ridge, TN

Issue Date:: 1984-01-01

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 865241

Patent Number(s):: 4481179

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B14/324 - {Silicon carbide}
C04B30/02 - containing fibrous materials
C04B35/573 - obtained by reaction sintering {or recrystallisation}
C04B35/62227 - {obtaining fibres}
C04B35/80 - Fibres, filaments, whiskers, platelets, or the like {
C04B41/4529 - {applied from the gas phase}
C04B41/4556 - {coating or impregnating with a product reacting with the substrate, e.g. generating a metal coating by surface reduction of a ceramic substrate}

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DOE Contract Number:: W-7405-ENG-26

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; forming; fibrous; silicon; carbide; insulating; material; whereby; carbide-bonded; sic; fiber; composites; prepared; carbon-bonded; disclosed; composite; treated; gaseous; monoxide; generated; reaction; mixture; colloidal; silica; carbon; black; elevated; temperature; argon; atmosphere; bond; chemically; converted; resulting; fabricating; dense; high-strength; high-toughness; thermal; materials; oxidizing; environments; argon atmosphere; silicon monoxide; insulating material; elevated temperature; silicon carbide; composite material; fiber composite; thermal insulating; carbon black; fiber composites; oxidizing environments; carbon bond; sic fiber; composite mat; method whereby; oxidizing environment; /423/501/

Citation Formats


                    Wei, George C. Method for forming fibrous silicon carbide insulating material.  United States: N. p., 1984. 
        Web.

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                    Wei, George C. Method for forming fibrous silicon carbide insulating material.  United States.

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                    Wei, George C. Sun .  
        "Method for forming fibrous silicon carbide insulating material".  United States.  https://www.osti.gov/servlets/purl/865241.

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@article{osti_865241,

  title        = {Method for forming fibrous silicon carbide insulating material},

  author       = {Wei, George C},

  abstractNote = {A method whereby silicon carbide-bonded SiC fiber composites are prepared from carbon-bonded C fiber composites is disclosed. Carbon-bonded C fiber composite material is treated with gaseous silicon monoxide generated from the reaction of a mixture of colloidal silica and carbon black at an elevated temperature in an argon atmosphere. The carbon in the carbon bond and fiber is thus chemically converted to SiC resulting in a silicon carbide-bonded SiC fiber composite that can be used for fabricating dense, high-strength high-toughness SiC composites or as thermal insulating materials in oxidizing environments.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1984},

  month        = {1}

}

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