Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-03-31
1977-06-07
Lusignan, Michael R.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75212, C22C 104
Patent
active
040280950
ABSTRACT:
Free flowing powders, such as for flame spray applications, are produced by spray drying a slurry of finely divided particles of the metal in a solvent-binder system to produce agglomerates, wherein the binder is a soluble compound of the metal. These agglomerates possess sufficient green strength to be screened and exhibit higher apparent densities than comparable powders agglomerated with conventional organic binders. When these powders are heated in a reducing atmosphere above the decomposition temperature of the binder, the binder converts to base metal and harmless by-products, such as nitrogen and water thus avoiding contamination of the product, equipment and work area usually associated with conventional organic binders.
REFERENCES:
patent: 2666696 (1954-01-01), Fredenburgh
patent: 3153585 (1964-10-01), Laferty
patent: 3223523 (1965-12-01), Adler
patent: 3322515 (1967-05-01), Dittrich et al.
patent: 3436248 (1969-04-01), Dittrich et al.
patent: 3617358 (1971-11-01), Dittrich
patent: 3890137 (1975-06-01), Beyer et al.
Laferty, Jr. John M.
Port David J.
Ritsko Joseph E.
Castle Donald R.
Fox John C.
GTE Sylvania Incorporated
Lusignan Michael R.
O'Malley Norman J.
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