Combustion synthesis of low exothermic component rich composites

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:867694

Halverson, Danny C ^[1]; Lum, Beverly Y ^[2]; Munir, Zuhair A ^[3]

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1. Modesto, CA
2. Livermore, CA
3. Davis, CA

A self-sustaining combustion synthesis process for producing hard, tough, lightweight, low exothermic potential product (LEPP)/high exothermic potential product (HEPP) composites is based on the thermodynamic dependence of adiabatic temperature and product composition on the stoichiometry of the LEPP and HEPP reactants. For lightweight products the composition must be relatively rich in the LEPP component. LEPP 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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4990180
• OSTI ID: 867694
• Country of Publication: United States
• Language: English

Related Subjects

combustion
synthesis
exothermic
component
rich
composites
self-sustaining
process
producing
hard
tough
lightweight
potential
product
lepp
hepp
based
thermodynamic
dependence
adiabatic
temperature
composition
stoichiometry
reactants
products
relatively
obtained
varying
initial
porous
material
toughness
enhanced
filling
pores
aluminum
metal
phases
liquid
infiltration
extended
formation
synthesis process
metal phases
combustion synthesis
porous material
liquid metal
relatively rich
adiabatic temperature
self-sustaining combustion
metal phase
metal infiltration
rich composites
exothermic component
weight products
initial temperature
infiltration process
thermodynamic dependence
exothermic potential
potential product
producing hard
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