Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1993-10-29
1996-11-05
Ryan, Patrick J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428373, 428375, 428392, 428400, 428404, 428610, 428615, 428567, 428568, 428548, 428552, 428554, B22F 704, B22F 708
Patent
active
055727255
ABSTRACT:
Reinforcement fibers are formed from a single crystal garnet body--suitably an aluminum garnet, desirably a rare earth aluminum garnet--having an epitaxial surface layer of a second garnet having a lattice constant larger than that of the body garnet so as to provide a compressive strain, to thereby strengthen the fiber.
REFERENCES:
J. K. Weddell, "Continuous Ceramic Fibres", Journal of the Textile Institute, (1990), vol. 81, No. 4, pp. 333-359.
Morris et al., "Epitaxial Strengthening of Crystals", U.S. Statutory Invention Registration, Reg. No. H557, pub. Dec. 6, 1988.
J. E. Marion, "Compressive epitactic layers on single-crystal components for improved mechanical durability and strength", J.Appl. Physics, 62, No. 5, Sep. 1, 1987, pp. 2065-69.
J. E. Mee et al., "Chemical Vapor Deposition of Epitaxial YIG on YAG and Epitaxial GdIG on YAG", Appl, Phys. Lett., 10, No. 10; pp. 289-291, May 15, 1967.
D. M. Gualtieri, "Fe-YIG: Narrow x-ray linewidth epitaxial layers on Gd.sub.3 Ga.sub.5 O.sub.12 " J. Appl. Phys., 63, No. 8, apr. 1988, pp. 3795-3797.
J. C. Lambropoulos, "Toughening and crack tip shielding in brittle materials by residually stressed thin films", J. Vac. Sci. Technol., A9(4), Jul./Aug. 1991.
P. H. Kobrin et al., "The effects of thin compressive films on identation fracture toughness measurements", J. Mat. Sci., 24 pp. 1363-1367 (1989).
Gualtieri Devlin M.
Morris Robert C.
Narasimhan Dave
Whalen Philip J.
Allied-Signal Inc.
Kreger, Jr. Verne E.
Ryan Patrick J.
Weisberger Rid
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