Patent ID: 8609187
Filing Date: 2013-12-17
Classification: B05D,B22F,C22C,C22F,C23C,Y10T

Abstract:
1. A method of preparing composite particles comprising: preparing a powder mixture comprised of coating particles, first host particles, and second host particles, where the coating particles consist of a coating material, and where the first host particles consist of a first material, and where the second host particles consist of a second material, where the first material and the second material are comprised of metals, and where a representative diameter of coating particles is about 50 nanometers or less, and where a representative diameter of the first host particles and a representative diameter of the second host particles is from about 1 micron to about 50 microns; generating a coating of the coating material on the first host particles and on the second host particles by subjecting the powder mixture to a mechano chemical bonding process for an MCB time period, where the MCB time period is sufficient to generate the coating of the coating material, thereby generating coated host particles, where the coated host particles are comprised of a plurality of first host particles and a plurality of second host particles, where each first host particle in the plurality of first host particles is surrounded by the coating material, and where each second host particle in the plurality of second host particles is surrounded by the coating material; and subjecting the coated host particles to a high energy ball milling process for a ball milling time period sufficient to produce the composite particles, where the composite particles have a representative diameter of from about 20 microns to about 100 microns, and where the composite particles have a grain size of less than one micron, and where the composite particles are comprised of an intermetallic of the first material and the second material within the grain.