Method of producing metal base composite material under promotion of matrix metal infiltration by fine pieces of third material

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EP 0 340 957 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.06.1990 Bulletin 1990/23

(43)	Date of publication A2:
	08.11.1989 Bulletin 1989/45

(21)	Application number: 89304076.6

(22)	Date of filing: 24.04.1989

(51)	International Patent Classification (IPC)⁴: C22C 1/09

(84)	Designated Contracting States:
	DE FR GB

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Priority:

30.04.1988 JP 108165/88
30.04.1988 JP 108166/88

(71)	Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
	Aichi-ken 471 (JP)

(72)	Inventors:
	Kubo, Masahiro Toyota-shi Aichi-ken (JP) Suganuma, Tetsuya Nagoya-shi Aichi-ken (JP) Morikawa, Takashi Toyota-shi Aichi-ken (JP) Tanaka, Atsuo Toyota-shi Aichi-ken (JP) Kajikawa, Yoshiaki Toyota-shi Aichi-ken (JP) Nukami, Tetsuya Toyota-shi Aichi-ken (JP)

(74)	Representative: Ben-Nathan, Laurence Albert et al
	Urquhart-Dykes & Lord 91 Wimpole Street London W1M 8AH London W1M 8AH (GB)

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References cited: :

(54)	Method of producing metal base composite material under promotion of matrix metal infiltration by fine pieces of third material

(57) In producing a metal base composite material by first producing a porous preform from a reinforcing material such as short fibers, whisker, particles or mixtures thereof, and secondly infiltrating a molten matrix .metal into the interstices of the porous preform, fine pieces of a third material having good affinity to the molten matrix metal are mixed in the porous preform in the process of producing the preform, and at least a part of the preform is contacted with a molten mass of the matrix metal so that the molten matrix metal infiltrates into the interstices of the porous preform with no substantial pressure being applied thereto.

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