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US3827129A Expired / Lapsed US ⏱️ 0.0 years remaining

Methods of producing a metal and carbon fibre composite

Assignee: British Railways Board
•
Filing: 1972-01-06
•
Granted: 1974-08-06
•
Expires: 1992-01-06
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Abstract

Abstract A process of producing a metal and carbon fibre composite in which carbon fibres are treated to produce a very thin coating on the surface and the treated fibres are then wetted by metal melts to which a particular alloying metal has been added. The fibres are treated with a metal carbide and the alloying metal is preferably of the same metal as that of the carbide. The carbon fibres are infiltrated into the matrix metal while the latter is in a molten state and the invention is particularly concerned with the production of a wetting interface between the metal alloys and the carbon fibres. The method enables shaped bodies such as shaft bearings to be made in a convenient manner. The composite may have other forms such as continuous tapes for subsequent assembly into more complex shapes.

Inventors

  • 👤 A Denham
  • 👤 B Redfern

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:09
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; B; B23; B23P; B23P17/00; B23P17/04; C; C22; C22C; C22C49/00; C22C49/14; F16C33/16; F16C2223/00; F16C2223/30; F16C2223/60; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801; Y10T29/4998; Y10T29/49982; Y10T29/49984

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 19 words
A method as claimed in claim 1, wherein the coating is continuous and does not exceed 500 A thickness.
Claim 2
Dependent Claim 26 words
A method as claimed in claim 1, wherein the coating is formed as a preliminary step by reacting the metal with the carbon of the fibres.
Claim 3
Dependent Claim 19 words
A method as claimed in claim 3 wherein the coating is produced by a metal halide vapour deposition method.
Claim 4
Dependent Claim 24 words
A methOd as claimed in claim 1, wherein an amount of at least one of the metals specified is added to the matrix metal.
Claim 5
Dependent Claim 27 words
A method as claimed in claim 5, wherein the metal added to the matrix is the same as that forming the carbide coating on the carbon fibres.
Claim 6
Dependent Claim 32 words
A method as claimed in claim 5 in which the added metal is insolid solution in the matrix metal in an amount of at least 0.05 percent by weight of the whole.
Claim 7
Dependent Claim 23 words
A method as claimed in claim 5, wherein the matrix metal is copper or a copper alloy and the added metal is titanium.
Claim 8
Dependent Claim 45 words
A method as claimed in claim 5, wherein the added metal forms an intermetallic compound with the matrix metal and the melt into which the carbon fibres are infiltrated is maintained at a temperature high enough to release the added metal from the intermetallic compound.
Claim 9
Dependent Claim 22 words
A method as claimed in claim 5, wherein the matrix metal is a tin lead alloy and the added metal is titanium.
Claim 10
Dependent Claim 19 words
A method as claimed in claim 5, wherein the matrix metal is aluminium and the added metal is titanium.
Claim 11
Dependent Claim 19 words
A method as claimed in claim 5, wherein the matrix metal is magnesium and the added metal is titanium.

References Cited (Backward Citations)

US3348967A Cited
US3460920A Cited
US3550247A Cited
US3553820A Cited
US3600163A Cited
US3583471A Cited
US3668748A Cited
DE2016734A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-05 1978-02-04 1978-08-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-05 1982-02-04 1982-08-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-05 1986-02-04 1986-08-06 $7700.00 Window Closed / Lapsed

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