Synthesis of refractory materials

Patent · Tue Aug 16 04:00:00 EDT 1983

OSTI ID:6858795

Holt, J B

Refractory metal nitrides are synthesized during a self-propagating combustion process utilizing a solid source of nitrogen. 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.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy
• Patent Number(s): None
• Application Number: ON: DE84011045
• OSTI ID: 6858795
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALINE EARTH METALS
AZIDES
CALCIUM
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
ELEMENTS
MAGNESIUM
METALS
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
REFRACTORIES
SYNTHESIS
THERMOCHEMICAL PROCESSES