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Title: Synthesis of refractory materials

Abstract

Refractory metal nitrides are synthesized during a self-propagating combustion process utilizing a solid source of nitrogren. For this purpose, a metal azide is employed, preferably NaN.sub.3. The azide is combusted with Mg or Ca, and a metal oxide is selected from Groups III-A, IV-A, III-B, IV-B, or a rare earth metal oxide. The mixture of azide, Ca or Mg and metal oxide is heated to the mixture's ignition temperature. At that temperature the mixture is ignited and undergoes self-sustaining combustion until the starter materials are exhausted, producing the metal nitride.

Inventors:
 [1]
  1. (San Jose, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865092
Patent Number(s):
4459363
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
synthesis; refractory; materials; metal; nitrides; synthesized; self-propagating; combustion; process; utilizing; solid; source; nitrogren; purpose; azide; employed; preferably; nan; combusted; mg; oxide; selected; iii-a; iv-a; iii-b; iv-b; rare; earth; mixture; heated; ignition; temperature; ignited; undergoes; self-sustaining; starter; exhausted; producing; nitride; metal nitrides; refractory materials; metal azide; ignition temperature; combustion process; refractory material; refractory metal; metal oxide; rare earth; earth metal; process utilizing; metal nitride; solid source; self-sustaining combustion; propagating combustion; /501/423/

Citation Formats

Holt, Joseph B. Synthesis of refractory materials. United States: N. p., 1984. Web.
Holt, Joseph B. Synthesis of refractory materials. United States.
Holt, Joseph B. Sun . "Synthesis of refractory materials". United States. https://www.osti.gov/servlets/purl/865092.
@article{osti_865092,
title = {Synthesis of refractory materials},
author = {Holt, Joseph B.},
abstractNote = {Refractory metal nitrides are synthesized during a self-propagating combustion process utilizing a solid source of nitrogren. For this purpose, a metal azide is employed, preferably NaN.sub.3. The azide is combusted with Mg or Ca, and a metal oxide is selected from Groups III-A, IV-A, III-B, IV-B, or a rare earth metal oxide. The mixture of azide, Ca or Mg and metal oxide is heated to the mixture's ignition temperature. At that temperature the mixture is ignited and undergoes self-sustaining combustion until the starter materials are exhausted, producing the metal nitride.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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