Process for preparing fine grain titanium carbide powder

Title: Process for preparing fine grain titanium carbide powder

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Abstract

This patent describes a method for preparing titanium carbide powder of a purity greater than 99.9% in a submicron particle size range. The method comprises forming a mixture consisting essentially of a liquid organotitanate or an organititanate in solution and a solution of carbon precursor polymer. The organotitanate and the carbon precursor polymer are in essentially stoichiometric concentrations with respect to titanium and carbon. The organotitanate provides a crosslinking reaction with the carbon precursor polymer for forming a gel, heating the gel to successively dry the gel, drive volatile components from the gel and pyrolyze the polymer to form free carbon, and thereafter heating the remaining components of the gel to a temperature sufficient to convert the titanium and carbon to titanium carbide powder.

Inventors:: Janey, M A

Publication Date:: 1986-11-11

OSTI Identifier:: 7195159

Patent Number(s):: US 4622215

Assignee:: Dept. of Energy, Washington, DC

Resource Type:: Patent

Resource Relation:: Patent File Date: Filed date 12 Mar 1985

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; TITANIUM CARBIDES; CHEMICAL PREPARATION; CARBON; CROSS-LINKING; GELS; HEATING; IMPURITIES; MIXTURES; PARTICLE SIZE; POLYMERS; POWDERS; PYROLYSIS; QUANTITY RATIO; STOICHIOMETRY; TEMPERATURE EFFECTS; VOLATILE MATTER; CARBIDES; CARBON COMPOUNDS; CHEMICAL REACTIONS; COLLOIDS; DECOMPOSITION; DISPERSIONS; ELEMENTS; MATTER; NONMETALS; POLYMERIZATION; SIZE; SYNTHESIS; THERMOCHEMICAL PROCESSES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication

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                    Janey, M A. Process for preparing fine grain titanium carbide powder.  United States: N. p., 1986. 
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                    Janey, M A. Process for preparing fine grain titanium carbide powder.  United States.

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                    Janey, M A. Tue .  
        "Process for preparing fine grain titanium carbide powder".  United States.

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@article{osti_7195159,

  title        = {Process for preparing fine grain titanium carbide powder},

  author       = {Janey, M A},

  abstractNote = {This patent describes a method for preparing titanium carbide powder of a purity greater than 99.9% in a submicron particle size range. The method comprises forming a mixture consisting essentially of a liquid organotitanate or an organititanate in solution and a solution of carbon precursor polymer. The organotitanate and the carbon precursor polymer are in essentially stoichiometric concentrations with respect to titanium and carbon. The organotitanate provides a crosslinking reaction with the carbon precursor polymer for forming a gel, heating the gel to successively dry the gel, drive volatile components from the gel and pyrolyze the polymer to form free carbon, and thereafter heating the remaining components of the gel to a temperature sufficient to convert the titanium and carbon to titanium carbide powder.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/7195159},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1986},

  month        = {11}

}

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Process for preparing fine grain titanium carbide powder

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A method for preparing finely divided titanium carbide powder in which an organotitanate is reacted with a carbon precursor polymer to provide an admixture of the titanium and the polymer at a molecular-level due to a crosslinking reaction between the organotitanate and the polymer. The resulting gel is dried, pyrolyzed to drive off volatile components and provide carbon. The resulting solids are then heated at an elevated temperature to convert the titanium and carbon to high-purity titanium carbide powder in a submicron size range.
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