Chemistry of inorganic compounds – Nitrogen or compound thereof – Binary compound
Patent
1988-04-29
1990-05-29
Bell, Mark L.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Binary compound
423409, 423410, 423412, 501 96, C01B 21072, C01B 21076, C04B 3558
Patent
active
049294334
ABSTRACT:
Nitride powders of high surface area, uniform small particle size and high purity are prepared by forming in an aqueous medium a homogeneous combination of a soluble or colloidally dispersible compound of a multivalent metal with a water soluble oxygen oxygenated carbonaceous polymer, e.g., by mixing an aluminum or other metal salt with polyacrylic acid or mixing colloidal hydrated alumina, or other such metal oxide, with a water soluble oxygenated carbonaceous polymer such as sucrose or methyl cellulose. The resulting precipitate or gel is dried and calcined in a nitriding atmosphere, forming a nitride powder which is highly suitable for fabrication of ceramic bodies by sintering at lower than conventional temperatures.
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Axelson Scott R.
Hexemer, Jr. Richard L.
McCluskey Philip H.
Mroz, Jr. Thomas J.
Alfred University
Bell Mark L.
Green Anthony J.
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