Patent number: 6786950
Abstract: Methods of producing metal and alloy fine powders having purity in excess of 99.9%, preferably 99.999%, more preferably 99.99999% are discussed. Fine submicron and nanoscale powders discussed include various shapes and forms including spheres, rods, whiskers, platelets and fibers. The use of surfactant, emulsifying agents and capping dispersants in powder synthesis are presented. Compositions taught include nickel, copper, iron, cobalt, silver, gold, platinum, palladium, tin, zirconium, aluminum, silicon, antimony, indium, titanium, tantalum, niobium, zinc and others from the periodic table. The fine powders are useful in various applications such as biomedical, sensor, electronic, electrical, photonic, thermal, piezo, magnetic, catalytic and electrochemical products.
Type:
Grant
Filed:
December 10, 2002
Date of Patent:
September 7, 2004
Assignee:
NanoProducts Corporation
Inventors:
Tapesh Yadav, Roger Dirstine, Karl Pfaffenbach