Method of preparing metal carbides, nitrides, and the like

Patent · Tue Jan 23 00:00:00 EST 1990

OSTI ID:6911414

Laine, R M

This patent describes a method of producing a product M{sub a}X{sub b} wherein M represents one or more metals selected from the group consisting of transition metals and tin, X represents silicon, and a and b represent the atomic proportions of M and X. It comprises: providing a precursor to M{sub a}X{sub b} that is non-volatile upon pyrolysis and which comprises an organometallic complex. The complex including one or more metal atoms M which may be the same or different, and wherein each of the metal atoms M is bound to an organic ligand. The organometallic complex further containing the element X either directly bound to one or more of the metal atoms M or contained within the ligand or both; optionally either: dissolving the precursor in an organic solvent to give a precursor solution. The solvent selected such that the precursor can be dissolved to a concentration at which the precursor solution has a viscosity sufficient to allow extrusion into a desired form; or melting the precursor; shaping the precursor into a desired form; and pyrolyzing the shaped precursor, at a temperature in the range of 500{degrees} C. to 950{degrees} C., to give M{sub a}X{sub b} as a residue substantially free of organic materials.

• Assignee: SRI International, Menlo Park, CA
• Patent Number(s): US 4895709; A
• Application Number: PPN: US 7-279599A
• OSTI ID: 6911414
• Resource Relation: Patent File Date: 5 Dec 1988
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ORGANOMETALLIC COMPOUNDS
SYNTHESIS
SILICON CARBIDES
SILICON NITRIDES
TIN CARBIDES
TIN NITRIDES
TRANSITION ELEMENT COMPOUNDS
PRECURSOR
PYROLYSIS
CARBIDES
CARBON COMPOUNDS
CHEMICAL REACTIONS
DECOMPOSITION
NITRIDES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
PNICTIDES
SILICON COMPOUNDS
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication