Metal powder with nano-composite structure and its...

Details Metal powder with nano-composite structure and its... Metal powder with nano-composite structure and its...

2009-05-08

2010-06-15

Kastler, Scott (Department: 1793)

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

Spray refining means

C266S236000

Reexamination Certificate

active

07736585

ABSTRACT:
Methods, apparatuses and systems for producing powder particles of extremely small, highly uniform spherical shape and high sphericity, composed of metal including single metals and alloys, including nanocomposite structures, using a self-assembling procedure. The invention further includes the produced spherical particles. The metal spherical particles are produced whereby molten metal, alloys or composites are directed onto a fast-rotating disk in an atmosphere containing one or more inert gases and small amounts of an oxidizing gas and the molten metal drops are dispersed as tiny droplets for a predetermined time using centrifugal force within a cooling-reaction gas, and then cooled rapidly to form solid spherical particles. The spherical particles comprise a crystalline, amorphous or porous composition, having a size of 1-300 μm±1% with a uniformity of size being ≦60-70% and a precise spherical shape of less than or equal to ±10%.

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