Combustion synthesis of boride and other composites
Abstract
A self-sustaining combustion synthesis process for producing hard, tough, lightweight B/sub 4/C/TiB/sub 2/ composites is described. It is based on the thermodynamic dependence of adiabatic temperature and product composition on the stoichiometry of the B/sub 4/C and TiB/sub 2/ reactants. For lightweight products the composition must be relatively rich in the B/sub 4/C component. B/sub 4/C-rich composites are obtained by varying the initial temperature of the reactants. The product is hard, porous material whose toughness can be enhanced by filling the pores with aluminum or other metal phases using a liquid metal infiltration process. The process can be extended to the formation of other composites having a low exothermic component. 9 figs., 4 tabs.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 6293648
- Patent Number(s):
- 7225413
- Application Number:
- ON: DE89011463
- Assignee:
- Dept. of Energy
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60K - ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES
G - PHYSICS G05 - CONTROLLING G05G - CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; BORON CARBIDES; SYNTHESIS; TITANIUM BORIDES; ADIABATIC PROCESSES; COMBUSTION; COMPOSITE MATERIALS; INVENTIONS; KINETICS; MICROSTRUCTURE; TEMPERATURE DEPENDENCE; THERMODYNAMICS; BORIDES; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHEMICAL REACTIONS; CRYSTAL STRUCTURE; MATERIALS; OXIDATION; THERMOCHEMICAL PROCESSES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies
Citation Formats
Halverson, D. C., Lum, B. Y., and Munir, Z. A. Combustion synthesis of boride and other composites. United States: N. p., 1988.
Web.
Halverson, D. C., Lum, B. Y., & Munir, Z. A. Combustion synthesis of boride and other composites. United States.
Halverson, D. C., Lum, B. Y., and Munir, Z. A. Thu .
"Combustion synthesis of boride and other composites". United States. https://www.osti.gov/servlets/purl/6293648.
@article{osti_6293648,
title = {Combustion synthesis of boride and other composites},
author = {Halverson, D. C. and Lum, B. Y. and Munir, Z. A.},
abstractNote = {A self-sustaining combustion synthesis process for producing hard, tough, lightweight B/sub 4/C/TiB/sub 2/ composites is described. It is based on the thermodynamic dependence of adiabatic temperature and product composition on the stoichiometry of the B/sub 4/C and TiB/sub 2/ reactants. For lightweight products the composition must be relatively rich in the B/sub 4/C component. B/sub 4/C-rich composites are obtained by varying the initial temperature of the reactants. The product is hard, porous material whose toughness can be enhanced by filling the pores with aluminum or other metal phases using a liquid metal infiltration process. The process can be extended to the formation of other composites having a low exothermic component. 9 figs., 4 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 28 00:00:00 EDT 1988},
month = {Thu Jul 28 00:00:00 EDT 1988}
}