EP0340957A2
Expired / Lapsed
EP
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Method of producing metal base composite material under promotion of matrix metal infiltration by fine pieces of third material
Assignee: Toyota Motor Corp
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Filing: 1989-04-24
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Granted: —
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Expires: 2009-04-24
Abstract
Abstract 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.
Inventors
- 👤 Masahiro Kubo
- 👤 Tetsuya Suganuma
- 👤 Takashi Morikawa
- 👤 Atsuo Tanaka
- 👤 Yoshiaki Kajikawa
- 👤 Tetsuya Nukami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 16:39
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0036; C22C1/00; C22C1/10; C22C1/1036; C22C47/00; C22C47/02; C22C47/06; C22C47/08; C22C49/00; C22C49/02; C22C49/08; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
120 words
A method of producing a metal base composite material comprising a first process of producing a porous preform from a reinforcing material selected from a group consisting of short fibers, whisker, particles and mixtures thereof, and a second process of infiltrating a molten matrix metal into the interstices of said porous preform, wherein in said first process fine pieces of a third material having good affinity to the molten matrix metal are mixed in said porous preform, and in said second process at least a part of said preform is contacted with a molten mass of the matrix metal so that the molten matrix metal infiltrates into the interstices of said porous preform with no substantial pressure being applied thereto.
Claim 2
Independent Claim
120 words
A method of producing a metal base composite material comprising a first process of producing a porous preform from a reinforcing material selected from a group consisting of short fibers, whisker, particles and mixtures thereof, and a second process of infiltrating a molten matrix metal into the interstices of said porous preform, wherein in said first process fine pieces of a third material having good affinity to the molten matrix metal are mixed in said porous preform, and in said second process at least a part of said preform is contacted with a molten mass of the matrix metal so that the molten matrix metal infiltrates into the interstices of said porous preform with no substantial pressure being applied thereto.
Claim 3
Dependent Claim
63 words
A method according to claim 1, wherein said third material for said fine pieces is a metal or metals selected from a group consisting of Ni, Fe, Co, Cr, Mn, Cu, Ag, Si, Mg, Al, Zn, Sn, Ti and an alloy or alloys including any one of these metals as a principal component when the matrix metal is AI or an AI alloy.
Claim 4
Dependent Claim
57 words
A method according to claim 1, wherein said third material for said fine pieces is a metal or metals selected from a group consisting of Ni, Cr, Ag, Al, Zn, Sn, Pb and an alloy or alloys including any one of these metals as a principal component when the matrix metal is Mg or a Mg alloy.
Claim 5
Dependent Claim
94 words
A method according to claim 1, wherein when said reinforcing material is particularly selected from a group consisting of short fibers, whisker, particles and mixtures thereof made of an inorganic material other than metal, and the matrix metal is a metal selected from a group consisting of Al, Mg, AI alloy and Mg alloy, the material for said fine pieces is an oxide or oxides of a metal or metals selected from a group consisting of W, Mo, Pb, Bi, V, Cu, Ni, Co, Sn, Mn, B, Cr, Mg and AI and mixtures thereof.
Claim 6
Dependent Claim
37 words
A method according to claim 2, wherein said fine pieces of a determinate metal or metals are incorporated into the preform at a ratio more than 150% by weight relative to the amount of the reinforcing material.
Claim 7
Dependent Claim
31 words
A method according to claim 4, wherein said fine pieces of a determinate metal oxide or metal oxides are incorporated into the preform at a ratio more than 7.5% by weight.
Claim 8
Dependent Claim
31 words
A method according to claim 4, wherein said fine pieces of a determinate metal oxide or metal oxides are incorporated into the preform at a ratio more than 10% by weight.
Claim 9
Dependent Claim
31 words
A method according to claim 4, wherein said fine pieces of a determinate metal oxide or metal oxides are incorporated into the preform at a ratio more than 15% by weight.
Claim 10
Dependent Claim
43 words
A method according to claim 2, wherein the metal to form said fine pieces is selected more particularly from a group consisting of Hi, Fe, Co, Cu, Si, Zn, Sn, Ti and an alloy including one of these metals as a principal component.
Claim 11
Dependent Claim
45 words
A method according to claim 4, wherein the metal to form said fine pieces is selected more particularly from a group consisting of W, Mo, Pb, Bi, Cu, Ni, Co, Sn, Mn, Cr or an alloy including one of these metals as a principal component.
Claim 12
Dependent Claim
40 words
A method according to claim 4, wherein the metal to form said fine pieces is selected more particularly from a group consisting of W, Mo, Pb, Co, Mn or an alloy including one of these metals as a principal component.
Claim 13
Dependent Claim
29 words
A method according to claim 1, wherein the matrix metal is an AI alloy including at least one of Mg, Zr and Ca by an amount more than 0.5%.
Claim 14
Dependent Claim
39 words
A method according to claim 3, wherein said fine pieces of a certain determinate metal or metals is incorporated into the preform by an amount of more than 130% by weight relative to the reinforcing material in the preform.
Claim 15
Dependent Claim
29 words
A method according to claim 2, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal or metals is set to 5-90%.
Claim 16
Dependent Claim
29 words
A method according to claim 3, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal or metals is set to 5-90%.
Claim 17
Dependent Claim
29 words
A method according to claim 2, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal or metals is set to 7.5-85%.
Claim 18
Dependent Claim
29 words
A method according to claim 3, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal or metals is set to 7.5-85%.
Claim 19
Dependent Claim
31 words
A method according to claim 4, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal oxide or metal oxides is set to 4-85%.
Claim 20
Dependent Claim
31 words
A method according to claim 4, wherein the total volumetric ratio of said reinforcing material and said fine pieces of a determinate metal oxide or metal oxides is set to 5-80%.
Claim 21
Dependent Claim
31 words
A method according to claim claim 2, wherein the volumetric ratio of said fine pieces of a determinate metal or metals in the preform is set to be less than 85%.
Claim 22
Dependent Claim
31 words
A method according to claim claim 3, wherein the volumetric ratio of said fine pieces of a determinate metal or metals in the preform is set to be less than 85%.
Claim 23
Dependent Claim
32 words
A method according to claim 4, wherein the volumetric ratio of said fine pieces of a determinate metal oxide or metal oxides in the preform is set to be less than 45%.
Claim 24
Dependent Claim
32 words
A method according to claim 4, wherein the volumetric ratio of said fine pieces of a determinate metal oxide or metal oxides in the preform is set to be less than 40%.
Claim 25
Dependent Claim
29 words
A method according to claim 1, wherein the preform has a predetermined shape and dimensions, and only a part thereof is dipped into a bath of molten matrix metal.
References Cited (Backward Citations)
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