Ultra-fine powders using glycine-nitrate combustion synthesis

Conference · Wed May 01 00:00:00 EDT 1991

OSTI ID:5593640

Chick, L A; Pederson, L R; Bates, J L; Maupin, G D

Fabrication of advanced, multifunctional materials frequently requires the synthesis of complex, ultra-fine powders comprised of a single phase containing several elements (multicomponent) or of several phases that are intimately mixed on a micro-scale (composite). A new combustion synthesis method, the glycine/nitrate process (GNP), is particularly useful for synthesizing ultra-fine, multicomponent oxide powders. Examples discussed include La(Sr)CrO{sub 3} and La(Sr)FeO{sub 3} perovskites and a composite of three phases, NiO, NiFe{sub 2}O{sub 4}, and Cu metal. The GNP consists of two basic steps. First, metal nitrates and a low molecular weight amino acid are dissolved in water. Second, the solution is boiled until it thickens. This viscous liquid ignites and undergoes self-sustaining combustion, producing an ash composed of the oxide product. Most refractory oxides that are composed of a combination of metals having stable nitrates should be possible to synthesize using GNP. 15 refs., 8 figs.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5593640
• Report Number(s): PNL-SA-19249; CONF-9105184-4; ON: DE91012926
• Resource Relation: Conference: 5. annual conference on fossil energy materials, Oak Ridge, TN (USA), 13-16 May 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM OXIDES
SYNTHESIS
GLYCINE
COMBUSTION
IRON OXIDES
LANTHANUM OXIDES
NICKEL OXIDES
NITRATES
STRONTIUM OXIDES
CATALYSTS
POWDERS
ALKALINE EARTH METAL COMPOUNDS
AMINO ACIDS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
IRON COMPOUNDS
LANTHANUM COMPOUNDS
NICKEL COMPOUNDS
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication