Patent US3716461A successfully refreshed from Google Patents.
US3716461A
Expired / Lapsed
US
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Process for forming composite material by electrodeposition under the influence of a centrifugal force field
Assignee: United States Department of the Army
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Filing: 1969-05-13
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Granted: 1973-02-13
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Expires: 1989-05-13
Abstract
Abstract An improvement in the techniques of forming composite material by electrodeposition whereby the electrolyte slurry containing the reinforcing whiskers or fibers is subjected to a centrifugal force field to press the whiskers or fibers against the cathode and form a permeable mat thereagainst for encapsulation by the deposited matrix metal. Thus, the percent by volume of the whiskers or fibers in the deposited composite material can be increased substantially above that which is possible by conventional electrodeposition technique.
Inventors
- 👤 I Ahmad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
C; C25; C25D; C25D15/00; C25D1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
The process of producing by electrodeposition a composite material including a metallic matrix and reinforcing particles, comprising the steps of: mounting metal collecting cathode means in a rotatable cell concentrically around the outside of anode means radially spaced therefrom; mixing a predetermined amount of the reinforcing particles in a liquid electrolyte to form a slurry; placing said mixed slurry into the space between said cathode means and said anode means; rotating said cathode means, anode means, and slurry simultaneously at a speed sufficient to form and hold a permeable mat of said reinforcing particles against said cathode means by centrifugal force; and applying an electric current to said anode means and said cathode means while rotating said cathode means, anode means, and said slurry to produce a deposit of said composite material on said cathode means by electrodeposition.
Claim 2
Dependent Claim
138 words
The process of producing by electrodeposition a composite material including a metallic matrix and reinforcing particles, comprising the steps of: mounting metal collecting cathode means in a rotatable cell concentrically around the outside of anode means radially spaced therefrom; mixing a predetermined amount of the reinforcing particles in a liquid electrolyte to form a slurry; placing said mixed slurry into the space between said cathode means and said anode means; rotating said cathode means, anode means, and slurry simultaneously at a speed sufficient to form and hold a permeable mat of said reinforcing particles against said cathode means by centrifugal force; and applying an electric current to said anode means and said cathode means while rotating said cathode means, anode means, and said slurry to produce a deposit of said composite material on said cathode means by electrodeposition.
Claim 3
Dependent Claim
46 words
The process as defined in claim 1 and including the step of adjusting the speed of the rotation of the cell so as to create a centrifugal force field of sufficient magnitude to produce a desired volume percent of the reinforcing particles in the composite material.
Claim 4
Dependent Claim
39 words
The process as defined in claim 1 and including the step of adjusting the current density applied to the anode and the cathode means below thAt which would cause bridging and the creation of voids in the composite material.
Claim 5
Dependent Claim
31 words
The process as defined in claim 1 and including the step of adding particles of more than one reinforcing material to the slurry to improve different properties of the matrix metal.
Claim 6
Dependent Claim
21 words
The process as defined in claim 1 wherein the reinforcing particles are in the form of whiskers, fibers or discontinuous filaments.
Claim 7
Dependent Claim
33 words
The process as defined in claim 1 wherein the cathode means is in the configuration of a cylinder and the deposited composite material is formed on the inside thereof as a surface plating.
Claim 8
Dependent Claim
17 words
The process as defined in claim 1 wherein said cathode means comprises a plurality of arcuate cathodes.
Claim 9
Dependent Claim
32 words
The process as defined in claim 1 and including the steps of removing said cathode means after sufficient electrodeposition of composite material, and stripping the collected composite material from said cathode means.
References Cited (Backward Citations)
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US3061525A
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US3359195A
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US3205624A
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US3476666A
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |