Glycine-nitrate synthesis of a ceramic-metal composite

A ceramic-metal composite material, consisting of NiO, NiFe 2O 4 and Cu metal, was prepared by the glycine-nitrate combustion synthesis process (GNP). The synthesized powder consisted of intimately mixed nanometer size crystallites. This GNP powder was cold-pressed and solid-state sintered, which pr...

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Bibliographic Details
Published in:Nanostructured materials 1994, Vol.4 (5), p.603-615
Main Authors: Chick, L.A., Maupin, G.D., Pederson, L.R.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
Sintered metals and alloys. Pseudo alloys. Cermets
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Summary:A ceramic-metal composite material, consisting of NiO, NiFe 2O 4 and Cu metal, was prepared by the glycine-nitrate combustion synthesis process (GNP). The synthesized powder consisted of intimately mixed nanometer size crystallites. This GNP powder was cold-pressed and solid-state sintered, which produced a dense cermet with micron size grains. The scale of the microstructure in the GNP material was about one order of magnitude smaller (linear basis) than that for samples fabricated by mechanical mixing of single phase powders followed by sintering at a temperature above the melting point of the metal phase. The paper also discusses synthesis of powders containing a single metal, Ni, Cu, or Fe, and the two-metal system containing Ni with Cu. The phases produced by oxidizing versus reducing combustion conditions are explored.
ISSN:0965-9773
1872-9150
DOI:10.1016/0965-9773(94)90070-1