Method of fabricating a filament-reinforced composite article

Patent 4010884 Issued on March 8, 1977. Estimated Expiration Date:

March 8, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3218704

3575783

3699623

3748721

Inventor

Rothman, Edward A.

Application

No. 525573 filed on 11/20/1974

US Classes:

228/190, Of concurrently bonded stacked laminae228/193, Diffusion type228/262.21, Solid state bonding428/189, Laterally noncoextensive components428/293.4, Fiber embedded in a ceramic, glass, or carbon matrix428/450, Next to metal428/457, Of metal428/593, Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components (e.g., parallel, inter- secting, etc.)428/607, Composite428/608, Embodying fibers interengaged or between layers (e.g., paper, etc.)428/621, With additional, spatially distinct nonmetal component428/627, Boride, carbide or nitride component428/635, Four or more distinct components with alternate recurrence of each type component428/651Next to refractory (Group IVB, VB, or VIB) metal-base component

Examiners

Primary: Smith, Al Lawrence
Assistant: Ramsey, K. J.

Attorney, Agent or Firm

Del Ponti; John D.

Abstract

A filament-reinforced composite article is fabricated from monolayer boron fiber tapes and laminates of titanium. The tapes which have the boron fibers attached to an aluminum foil are positioned in a multi-ply layup with interleaved titanium laminates in the form of foils or screening. The layup is subjected to heat and pressure in a diffusion bonding process to compact the layup materials and bond the fibers in the matrix of aluminum and titanium. The titanium in the matrix improves the impact load resistance of the article by improving ductility and impact strength.

Other References

Garret et al. Broad Applications of Diffusion Bonding, NASA CR-409, Wash. D.C., 1966, pp. 177 and 162
Niemann, J. T. and Garrett, "Eutectic Bonding of Boron-Aluminum Structural Components", 54th AWS Annual Meeting, Chicago, Ill., Apr. 2-6, 1973. Published in the Welding Journal Research Supplements: (Part I), Apr. 1974, pp. 175s-184s, and (Part II), Aug. 1974, pp. 351s-360s
Broutman & Krock, Composite Materials, vol. IV, Metallic Matrix Materials, edited by Kreider, Academic Press, NY, 1974, pp. 420-421