Patent ID: 7544229
Filing Date: 2009-06-09
Classification: B22F,B82Y

Abstract:
1. A method for producing a metal nano-powder comprising: (a) forming an alloy comprising a first metal and a second metal that is different from the first metal; (b) subjecting the alloy to a leaching agent effective to leach out the second metal and form a metal nano-powder; (c) washing and filtering the metal nano-powder; (d) drying the washed and filtered metal nano-powder; (e) coating the dried metal nano-powder with a chemical reagent to form a coated metal nano-powder wherein the chemical reagent is selected from the group consisting of sorbitan esters, polyoxyethylene esters, alcohols, glycerin, polyglycols, organic acid, organic acid salts, organic acid esters, thiols, phosphines, low molecular weight polymers, and combinations thereof; and (f) de-agglomerating the coated metal nano-powder.