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U.S. Department of Energy
Office of Scientific and Technical Information

Synthesis of metal matrix composites containing fly ash, graphite, glass, ceramics or other metals

Patent ·
OSTI ID:7369183
A method is described for casting a metal matrix composite wherein one or more reinforcing particles selected from the group comprising graphite, fly-ash, oil-ash, and hollow microspheres are added to a matrix metal, said method comprising the steps of; (a) heating the metal matrix to provide a melt, (b) stirring the melt using an impeller, (c) adding the reinforcing particles to the melt, (d) pouring the metal matrix-particulate melt into a mold while continually stirring the melt, whereby the impeller is rotated at a speed of at least 1,000 rpm so as to ensure an even distribution of the less dense reinforcing particles throughout the denser metal matrix.
Assignee:
IMS; EDB-93-106550
Patent Number(s):
A; US 5228494
Application Number:
PPN: US 7-876360
OSTI ID:
7369183
Country of Publication:
United States
Language:
English