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Title: Combustion synthesis of low exothermic component rich composites

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. Modesto, CA
  2. Livermore, CA
  3. Davis, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
867694
Patent Number(s):
4990180
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /75/419/

Citation Formats

Halverson, Danny C, Lum, Beverly Y, and Munir, Zuhair A. Combustion synthesis of low exothermic component rich composites. United States: N. p., 1991. Web.
Halverson, Danny C, Lum, Beverly Y, & Munir, Zuhair A. Combustion synthesis of low exothermic component rich composites. United States.
Halverson, Danny C, Lum, Beverly Y, and Munir, Zuhair A. Tue . "Combustion synthesis of low exothermic component rich composites". United States. https://www.osti.gov/servlets/purl/867694.
@article{osti_867694,
title = {Combustion synthesis of low exothermic component rich composites},
author = {Halverson, Danny C and Lum, Beverly Y and Munir, Zuhair A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

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