Method for production of metal base composite material

Details Method for production of metal base composite material Method for production of metal base composite material

1991-08-08

1994-04-26

Bradley, Paula A.

Metal founding

Process

Shaping liquid metal against a forming surface

164103, B22D 1914

Patent

active

053058178

ABSTRACT:
A method of making a composite material consists of entraining finely divided solid additive particles in a stream of ionized inert gas and ionizing the inert gas and utilizing heat generated by the ionized gas to heat the solid particles to a high temperature which is less than the temperature in at which the solid particles become non-solid due to melting sublimination or dissociation. Then, injecting the stream of gas and entrained heated solid particles into a molten metal mass to provide a mixture of finely divided solid particles and molten metal and thereafter causing physical agitation of the mixture of molten metal and solid particles to establish a substantially uniform distribution of solid particles in the molten metal. Such physical agitation of molten metal is continued until the mixture of finely divided particles and metals is completely solidified.

REFERENCES:
Cast Al-Graphite Part, Composites-A Potential Engineering, Dr. P. K. Rohatgi, vol. 67, Mar. 1987.
Solidification, Structures, and Prop. of Cast Metal-Ceramic Composites, Dr. P. K. Rohagi, IMR Dec. 1986, vol. 31, No. 3, p. 115.
Wettability of Graphite to Liquid Al. and the Effect of Alloying Elements on it, Takao Choh, Dec. 1987.
O. V. Abramov-Action of High Intensity Ultrasound on Solidifying Metal Rod. Feb. 13, 1986-Revised Jul. 14, 1986-Mar. 1987 pp. 73-81.

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