Synthesis of ultrafine powders by microwave heating

Details Synthesis of ultrafine powders by microwave heating Synthesis of ultrafine powders by microwave heating

1987-04-24

1988-11-15

Albrecht, Dennis

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

34 4, 75 05BC, 159DIG26, 20415743, 252518, 252521, 501123, 505 1, B22F 918, C22C 1903, C22C 2912, F26B 3337

Patent

active

047846860

ABSTRACT:
A method of synthesizing ultrafine powders using microwaves is described. A water soluble material is dissolved in water and the resulting aqueous solution is exposed to microwaves until the water has been removed. The resulting material is an ultrafine powder. This method can be used to make Al.sub.2 O.sub.3, NiO+Al.sub.2 O.sub.3 and NiO as well as a number of other materials including GaBa.sub.2 Cu.sub.3 O.sub.x.

REFERENCES:
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patent: 4556416 (1985-12-01), Kamijo et al.
Engler, E. M. et al., "Superconductivity . . . of a Family of Perouskite-Based Superconductors", J. Am. Chem. Soc., 109, 2848-2849, Apr. 29, 1987.
Hor, P. H., et al., "High Pressure Study of the New Y-Ba-Cu-O Superconducting Compound System", Phy. Rev. Lett., V. 59, No. 9, pp . 911-912, Mar. 2, 1987.
L. M. Sheppard, "Low-Temperature Synthesis of Ceramics," Adv. Mater. & Processes, Inc. Metal Prog., 47 (Nov. 1986).

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