Low temperature synthesis

Details Low temperature synthesis Low temperature synthesis

1986-04-15

1988-06-14

Stoll, Robert L.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423593, 423594, 423595, 423596, 423598, 423599, 423600, 423604, 423607, 423608, 423622, 423625, 423632, 423635, 423277, 423325, 423326, 252 6254, 252 6256, 252 6262, 501 94, 501103, 501108, 501112, 501117, 501118, 501120, 501126, 501127, 501132, C01G 4902

Patent

active

047510706

ABSTRACT:
Ultrafine particles of ceramic or metallic material are obtained at low temperatures from a nitrate source capable of endothermic decomposition by molecularly combining under a nitrogen atmosphere the nitrate source with an inorganic reducing fuel compound, such as hydrazine, to provide a chemical precursor for the ceramic or metallic material and then exothermically decomposing the precursor in a controlled atmosphere by heating to a temperature up to about 200.degree. C. below the endothermic decomposition temperature of the nitrate source. The nitrate source is a metal nitrate or a mixture of nitrate salts. Ferrite particles are recovered when the nitrate source is a mixture of nitrate salts containing ferric nitrate in a 2:1 molar ratio with at least one additional metal nitrate.

REFERENCES:
patent: 4076861 (1978-02-01), Furukawa et al.
patent: 4125474 (1978-11-01), Dezawa et al.
Lal & Ramakrishman, Trans. Indian Cer. Soc., vol. 38 (5), pp. 166-180, Sep.-Oct. 1979.
DAS, Preparation and Characterization of Materials, Honig & Rao, eds., Academic Press, pp. 75-100, 1981.
Richardson, Journal of Materials Science, vol. 15, pp. 2569-2572, 1980.
Patil, Gajepathy, and PaiVernecker, Mat. Res. Bull., vol. 17, pp. 29-32, 1982.
Patil, Gajapathy, and PaiVernecker, Journal of Material Science Letters, vol. 2, pp. 272-274, 1983.

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