Accession Number:

ADD014077

Title:

Method for Making Rapidly Solidified Powder.

Descriptive Note:

Patent, Filed 24 Apr 87, patented 9 Aug 88,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

• Savage, Steven J.
• Eylon, Daniel

Report Date:

1988-08-09

Pagination or Media Count:

6.0

Abstract:

System and method for producing metal or alloy powder are described comprising an electromagnetic levitating coil having an outlet for supporting a molten source of the metal or alloy and controllably discharging a molten stream thereof, an electromagnetic confining coil disposed at the outlet of the levitating coil and surrounding the molten stream for controlling the diameter of the molten stream, and either an atomization die and associated pressurized fluid source for disintegrating the confined molten stream into molten droplets for subsequent cooling to powder, or a controllable electromagnetic coil surrounding the confined molten stream for generating a downwardly and radially outwardly directed electromagnetic force interacting with the molten stream to form the droplets. Keywords Powder alloys, Solidification, Solidified powders. sdw

Descriptors:

• *POWDER ALLOYS
• *SOLIDIFICATION
• ATOMIZATION
• COILS
• CONFINEMENT(GENERAL)
• COOLING
• DIES
• DROPS
• ELECTROMAGNETISM
• FLUIDS
• MELTS
• POWDERS
• PRESSURIZATION
• SOURCES
• STREAMS

Subject Categories:

• Properties of Metals and Alloys
• Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE