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US3876389A
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Composite material, inclusions thereof, and method therefor
Assignee: International Business Machines Corp
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Filing: 1972-09-14
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Granted: 1975-04-08
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Expires: 1992-09-14
Abstract
Abstract A composite material is provided by this disclosure which utilizes prior art host matrix materials with new resident inclusions for structural members with unique properties and applications. An illustrative embodiment of a composite material according to the principles of this invention is described with fiber inclusions fabricated by electroplating of a polycrystalline film on a substrate. Polycrystalline fibers are fabricated with a wide range of sizes to have strength approaching those of a single crystal whisker of the polycrystalline material. An illustrative composite material is fabricated with a host matrix of epoxy resin in which resident fiber inclusions are dispersed.
Inventors
- 👤 Praveen Chaudhari
- 👤 James F Freedman
- 👤 Zlata Kovac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:53
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/58; B29C70/62; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29C70/14; C; C22; C22C; C22C47/00; C25; C25D; C25D15/00; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/16; C25D3/18; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12444; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12944; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
A COMPOSITE MATERIAL FOR A STRUCTURAL MEMBER COMPRISING A GIVEN LOST MATRIX AND APLURALITY OF GIVEN RESIDENT INCLUSIONS THEREIN WHICH IMPART STRENGTH PROPERTY TO SAID MEMBER, EACH SAID RESIDENT INCLUSION INCLUDING POLYCRYSTALLINE METALLIC MATERIAL IN FILM FORM WHOSE GRAIN SIZE IS SUCH THAT ITS ULTIMATE NORMALIZED STRENGTH IS GREATER THAN THE VALVE OF ULTIMATE NORMALIZED STRENGTH FOR THE BULK MATERIAL COMPARABLE TO SAID POLYCRYSTALLINE MATERIAL, WHEREIN THE GRAIN SIZE OF SAID POLYCRYSTALLINE MATERIAL IS LESS THAN 200 A AND THE ULTIMATE NORMALIZED STRENGTH OF SAID POLYCRYSTALLLINE MATERIAL IS IN THE APPROXI MATE RANGE OF 10**3 TO 6 X 10**2.
Claim 2
Dependent Claim
99 words
A COMPOSITE MATERIAL FOR A STRUCTURAL MEMBER COMPRISING A GIVEN LOST MATRIX AND APLURALITY OF GIVEN RESIDENT INCLUSIONS THEREIN WHICH IMPART STRENGTH PROPERTY TO SAID MEMBER, EACH SAID RESIDENT INCLUSION INCLUDING POLYCRYSTALLINE METALLIC MATERIAL IN FILM FORM WHOSE GRAIN SIZE IS SUCH THAT ITS ULTIMATE NORMALIZED STRENGTH IS GREATER THAN THE VALVE OF ULTIMATE NORMALIZED STRENGTH FOR THE BULK MATERIAL COMPARABLE TO SAID POLYCRYSTALLINE MATERIAL, WHEREIN THE GRAIN SIZE OF SAID POLYCRYSTALLINE MATERIAL IS LESS THAN 200 A AND THE ULTIMATE NORMALIZED STRENGTH OF SAID POLYCRYSTALLLINE MATERIAL IS IN THE APPROXI MATE RANGE OF 10**3 TO 6 X 10**2.
Claim 3
Dependent Claim
24 words
A composite material as set forth in claim 1 wherein said grain size is approximately in the range of 100 A to 200 A.
Claim 4
Dependent Claim
29 words
A composite material as set forth in claim 1 wherein said polycrystalline material has ultimate normalized strength approximately in the range of 2 .times. 10.sup.-.sup.2 to 6 .times. 10.sup.-.sup.2.
Claim 5
Dependent Claim
31 words
A composite material as set forth in claim 1 wherein said ultimate normalized strength of said polycrystalline material is substantially equal to the theoretically obtainable value of ultimate normalized strength therefor.
Claim 6
Dependent Claim
37 words
A composite material as set forth in claim 1 wherein said ultimate normalized strength of said polycrystalline material is substantially equal to the value of ultimate normalized strength for a single crystal whisker of said latter material.
Claim 7
Dependent Claim
18 words
A composite material as set forth in claim 1 wherein said polycrystalline material has a given geometrical shape.
Claim 8
Dependent Claim
24 words
A composite material as set forth in claim 6 wherein said geometrical shape is selected from the group consisting of plate, wire and flake.
Claim 9
Dependent Claim
20 words
A composite material as set forth in claim 1 wherein said resident inclusions are polycrystalline films established on respective substrates.
Claim 10
Dependent Claim
20 words
A composite material as set forth in claim 8 wherein said polycrystalline film is Ni and said substrate is Au.
Claim 11
Dependent Claim
23 words
A composite material as set forth in claim 8 wherein said host matrix is selected from the group consisting of metal and polymer.
Claim 12
Dependent Claim
14 words
A composite material as set forth in claim 10 wherein said metal is A1.
Claim 13
Dependent Claim
14 words
A composite material as set forth in claim 10 wherein said polymer is epoxy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |