US5007475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming metal matrix composite bodies containing three-dimensionally interconnected co-matrices and products produced thereby
Assignee: Lanxide Technology Co LP
•
Filing: 1988-11-10
•
Granted: 1991-04-16
•
Expires: 2008-11-10
Abstract
Abstract The present invention relates to the formation of a metal matrix composite body by the spontaneous infiltration of a molten matrix metal into a three-dimensionally interconnected material. Moreover, the three-dimensionally interconnected material may contain filler material within at least a portion of its porosity. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material and/or a three-dimensionally interconnected material and/or a matrix metal at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the three-dimensionally interconnected material and any filler material contained within at least a portion of the porosity of the three-dimensionally interconnected material.
Inventors
- 👤 Christopher R. Kennedy
- 👤 Michael K. Aghajanian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:51
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; C04B35/00; C04B35/71; C04B35/74; C04B35/78; C04B35/80; C04B41/4505; C04B41/4523; C04B41/515; C04B41/5155; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C22; C22C; C22C1/00; C22C1/10; C22C1/1036; C22C1/1057; C22C1/1063; C22C32/00; C22C32/0047; C22C32/0068; C22C47/00; C22C47/08; C04B2111/00; C04B2111/00474; C04B2111/00905; C04B2111/00913; C04B2111/00931; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12451; Y10T428/12486
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
54 words
A method for making a metal matrix composite, comprising: providing a substantially non-reactive three-dimensionally interconnected material; providing at least one substantially non-reactive filler within at least a portion of said three-dimensionally interconnected material; and spontaneously infiltrating molten matrix metal into at least a portion of the three-dimensionally interconnected material containing said substantially non-reactive filler.
Claim 2
Independent Claim
54 words
A method for making a metal matrix composite, comprising: providing a substantially non-reactive three-dimensionally interconnected material; providing at least one substantially non-reactive filler within at least a portion of said three-dimensionally interconnected material; and spontaneously infiltrating molten matrix metal into at least a portion of the three-dimensionally interconnected material containing said substantially non-reactive filler.
Claim 3
Dependent Claim
41 words
The method of claim 1, further comprising the step of providing an infiltrating atmosphere in communication with at least one of the three-dimensionally interconnected material, the filler and the matrix metal for at least a portion of the period of infiltration.
Claim 4
Dependent Claim
21 words
The method of claim 2, wherein the infiltrating atmosphere comprises an atmosphere selected from the group consisting of oxygen and nitrogen.
Claim 5
Dependent Claim
41 words
The method of claim 2, further comprising the step of supplying at least one of an infiltration enhancer precursor and an infiltration enhancer to at least one of the matrix metal, the three-dimensionally interconnected material, said filler and the infiltrating atmosphere.
Claim 6
Dependent Claim
23 words
The method of claim 4, wherein the infiltration enhancer precursor comprises a material selected from the group consisting of magnesium, strontium and calcium.
Claim 7
Dependent Claim
24 words
The method of claim 4, wherein said at least one of the infiltration enhancer precursor and infiltration enhancer is supplied from an external source.
Claim 8
Dependent Claim
41 words
The method of claim 4, wherein said at least one of said infiltration enhancer precursor and infiltration enhancer is provided in more than one of said matrix metal, said three-dimensionally interconnected material, said at least one filler and said infiltrating atmosphere.
Claim 9
Dependent Claim
23 words
The method of claim 4, wherein the matrix metal comprises aluminum, the infiltration enhancer precursor comprises strontium, and the infiltrating atmosphere comprises nitrogen.
Claim 10
Dependent Claim
23 words
The method of claim 4, wherein the matrix metal comprises aluminum, the infiltration enhancer precursor comprises calcium, and the infiltrating atmosphere comprises nitrogen.
Claim 11
Dependent Claim
38 words
The method of claim 1, further comprising the step of supplying at least one of an infiltration enhancer precursor and an infiltration enhancer to at least one of the matrix metal, said filler and the three-dimensionally interconnected material.
Claim 12
Dependent Claim
39 words
The method of claim 10, wherein said at least one of said infiltration enhancer precursor and infiltration enhancer is provided in said matrix metal and at least one of said three-dimensionally interconnected material and said at least one filler.
Claim 13
Dependent Claim
49 words
The method of claim 1, further comprising the step of contacting at least a portion of the three-dimensionally interconnected material or said at least one filler with at least one of an infiltration enhancer precursor and an infiltration enhancer during at least a portion of the period of infiltration.
Claim 14
Dependent Claim
16 words
The method of claim 1, wherein an infiltration enhancer precursor is alloyed in said matrix metal.
Claim 15
Dependent Claim
33 words
The method of claim 1, wherein said matrix metal comprises aluminum and at least one alloying element selected from the group consisting of silicon, iron, copper, manganese, chromium, zinc, calcium, magnesium and strontium.
Claim 16
Dependent Claim
38 words
The method of claim 1, wherein the temperature during spontaneous infiltration is greater than the melting point of the matrix metal, but lower than the volatilization temperature of the matrix metal and the melting point of the filler.
Claim 17
Dependent Claim
33 words
The method of claim 1, wherein the matrix metal comprises aluminum and said at least one filler comprises at least one material selected from the group consisting of oxides, carbides, borides and nitrides.
Claim 18
Dependent Claim
13 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a ceramic.
Claim 19
Dependent Claim
13 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a metal.
Claim 20
Dependent Claim
14 words
The method of claim 1, where said metal matrix composite comprises a co-matrix composite.
Claim 21
Dependent Claim
45 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a metal having a melting point lower than the melting point of the matrix metal and means for maintaining the three-dimensionally interconnected geometry when temperatures above said melting point are reached during spontaneous infiltration.
Claim 22
Dependent Claim
25 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a material selected from the group consisting of iron, alumina, aluminum and silicon carbide.
Claim 23
Dependent Claim
25 words
The method of claim 1, wherein said three-dimensionally interconnected material has a macro-porosity and a micro-porosity, and spontaneous infiltration occurs substantially only in said macro-porosity.
Claim 24
Dependent Claim
31 words
The method of claim 1, wherein said three-dimensionally interconnected material has a macro-porosity and a micro-porosity, and spontaneous infiltration occurs, at least in part, in both said macro-porosity and said micro-porosity.
Claim 25
Dependent Claim
43 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a material having a macro-porosity and a micro-porosity and said macro-porosity is substantially filled with said at least one filler such that said matrix metal spontaneously infiltrates said filler in said macro-porosity.
Claim 26
Dependent Claim
15 words
The method of claim 1, wherein said three-dimensionally interconnected material comprises a ceramic composite body.
Claim 27
Independent Claim
133 words
A method for forming a metal matrix composite body comprising: providing a substantially non-reactive three-dimensionally interconnected material; providing at least one substantially non-reactive filler within at least a portion of said three-dimensionally interconnected material; providing an infiltrating atmosphere which contacts said three-dimensionally interconnected material and said filler; providing a material comprising at least one material selected from the group consisting of an infiltration enhancer precursor and an infiltration enhancer to cause spontaneous infiltration of the matrix metal into said three-dimensionally interconnected material and said filler to occur, when said matrix metal is made molten; heating said matrix metal to render it molten; contacting molten matrix metal with said three-dimensionally interconnected material; and spontaneously infiltrating at least a portion of the three-dimensionally interconnected material containing said substantially non-reactive filler with said molten matrix metal.
Claim 28
Independent Claim
133 words
A method for forming a metal matrix composite body comprising: providing a substantially non-reactive three-dimensionally interconnected material; providing at least one substantially non-reactive filler within at least a portion of said three-dimensionally interconnected material; providing an infiltrating atmosphere which contacts said three-dimensionally interconnected material and said filler; providing a material comprising at least one material selected from the group consisting of an infiltration enhancer precursor and an infiltration enhancer to cause spontaneous infiltration of the matrix metal into said three-dimensionally interconnected material and said filler to occur, when said matrix metal is made molten; heating said matrix metal to render it molten; contacting molten matrix metal with said three-dimensionally interconnected material; and spontaneously infiltrating at least a portion of the three-dimensionally interconnected material containing said substantially non-reactive filler with said molten matrix metal.
Claim 29
Independent Claim
184 words
A method for forming a metal matrix composite body comprising: providing a substantially non-reactive three-dimensionally interconnected material containing porosity; placing a material comprising at least one substantially non-reactive filler within at least a portion of said porosity; providing an infiltrating atmosphere which contacts said three-dimensionally interconnected material and said material comprising at least one filler material; providing at least one infiltration enhancer precursor to at least one of a matrix metal, said three-dimensionally interconnected material, and said at least one filler to cause spontaneous infiltration of the matrix metal into said three-dimensionally interconnected material and said filler to occur, when said matrix metal is made molten; heating said matrix metal to a temperature above the melting point of said matrix metal and below the melting point of said three-dimensionally interconnected material and the melting point of said material comprising at least one filler; contacting molten matrix metal with said three-dimensionally interconnected material and said material comprising at least one filler; and spontaneously infiltrating at least a portion of said three-dimensionally interconnected material and said material comprising at least one filler with molten matrix metal.
Claim 30
Independent Claim
184 words
A method for forming a metal matrix composite body comprising: providing a substantially non-reactive three-dimensionally interconnected material containing porosity; placing a material comprising at least one substantially non-reactive filler within at least a portion of said porosity; providing an infiltrating atmosphere which contacts said three-dimensionally interconnected material and said material comprising at least one filler material; providing at least one infiltration enhancer precursor to at least one of a matrix metal, said three-dimensionally interconnected material, and said at least one filler to cause spontaneous infiltration of the matrix metal into said three-dimensionally interconnected material and said filler to occur, when said matrix metal is made molten; heating said matrix metal to a temperature above the melting point of said matrix metal and below the melting point of said three-dimensionally interconnected material and the melting point of said material comprising at least one filler; contacting molten matrix metal with said three-dimensionally interconnected material and said material comprising at least one filler; and spontaneously infiltrating at least a portion of said three-dimensionally interconnected material and said material comprising at least one filler with molten matrix metal.
Claim 31
Independent Claim
56 words
The method of claims 24 or 4, wherein the infiltration enhancer is formed in situ by reacting an infiltration enhancer precursor and at least one species selected from the group consisting of the infiltrating atmosphere, a material added to the three-dimensionally interconnected material, a material added to said at least one filler and the matrix metal.
Claim 32
Dependent Claim
13 words
The method of claim 28, wherein during infiltration, the infiltration enhancer precursor volatilizes.
Claim 33
Independent Claim
15 words
The method of claims 26 or 27, wherein during infiltration, the infiltration enhancer precursor volatilizes.
Claim 34
Dependent Claim
17 words
The method of claim 30, wherein the volatilized infiltration enhancer precursor reacts to form a reaction product.
Claim 35
Dependent Claim
19 words
The method of claim 31, wherein said reaction product is at least partially reducible by said molten matrix metal.
Claim 36
Dependent Claim
14 words
The method of claim 19, wherein said reaction product comprises a nitride of magnesium.
Claim 37
Dependent Claim
34 words
The method of claim 27, further comprising the step of defining at least one surface boundary of the three-dimensionally interconnected material with a barrier, wherein the matrix metal spontaneously infiltrates up to the barrier.
Claim 38
Dependent Claim
22 words
The method of claim 34, wherein the barrier comprises a material selected from the group consisting of carbon, graphite and titanium diboride.
Claim 39
Dependent Claim
15 words
The method of claim 34, wherein said barrier is substantially non-wettable by said matrix metal.
Claim 40
Dependent Claim
45 words
The method of claim 34, wherein said barrier comprises at least one material which permits communication between an infiltrating atmosphere and at least one of the matrix metal, said at least one filler, said three-dimensionally interconnected material, said infiltration enhancer and said infiltration enhancer precursor.
Claim 41
Dependent Claim
37 words
The method of claim 27, wherein the filler comprises at least one material selected from the group consisting of powders, flakes, platelets, microspheres, whiskers, bubbles, fibers, particulates, fiber mats, chopped fibers, spheres, pellets, tubules and refractory cloths.
Claim 42
Dependent Claim
17 words
The method of claim 27, wherein the filler is of limited solubility in the molten matrix metal.
Claim 43
Dependent Claim
14 words
The method of claim 27, wherein the filler comprises at least one ceramic material.
Claim 44
Independent Claim
25 words
The method of claims 27 or 4, wherein the matrix metal comprises aluminum, the infiltration enhancer precursor comprises magnesium, and the infiltrating atmosphere comprises nitrogen.
Claim 45
Independent Claim
25 words
The method of claims 27 or 4, wherein the matrix metal comprises aluminum, the infiltration enhancer precursor comprises zinc, and the infiltrating atmosphere comprises oxygen.
References Cited (Backward Citations)
US2951771A
Cited
US3031340A
Cited
US3149409A
Cited
US3396777A
Cited
US3547180A
Cited
US3608170A
Cited
US3915699A
Cited
US3718441A
Cited
US3868267A
Cited
US3969553A
Cited
US4082864A
Cited
DE2819076A1
Cited
US4802524A
Cited
US4677901A
Cited
US4404262A
Cited
US4376803A
Cited
US4376804A
Cited
US4473103A
Cited
JPS58144441A
Cited
US4450207A
Cited
US4570316A
Cited
JPS609568A
Cited
US4559246A
Cited
GB2156718A
Cited
US4679493A
Cited
US4731298A
Cited
US4587177A
Cited
US4673435A
Cited
US4630665A
Cited
US4657065A
Cited
US4713111A
Cited
US4753690A
Cited
US4662429A
Cited
US4871008A
Cited
EP0340957A2
Cited
EP0364963A1
Cited
US4932099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |