Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler
Patent
1989-03-17
1989-11-28
Godici, Nicholas P.
Metal fusion bonding
Process
Metal to nonmetal with separate metallic filler
228124, 228239, 22826312, 65 5922, B23K 3102
Patent
active
048832189
ABSTRACT:
A new and improved method of brazing a ceramic-metal article is described. The ceramic-metal article comprises a ceramic article, such as a lanthana-strengthened yttria article, bonded to a metal article, such as niobium, by a layer of a brazing material, such as brazing alloy consisting essentially of 72% by weight silver, 28% by weight copper to form a joined ceramic-metal article. The method of brazing the ceramic article comprises coating a surface of the lanthana-strengthened yttria article with a group IVB metal, such as titanium, hafnium, and zirconium then placing a brazing alloy, such as a brazing alloy consisting essentially of 72% by weight silver and 28% by weight copper or a brazing alloy consisting essentially of 82% by weight gold and 18% by weight nickel, between the coated lanthana-strengthened yttria article and the niobium article and heating the layered structure in vacuum at about 50 degrees centrigrade above the liquidus temperature of the brazing alloy for a period of about 5 minutes.
REFERENCES:
patent: 3342971 (1967-09-01), Kaarlela
patent: 3923551 (1975-12-01), Purdy
patent: 4098612 (1978-07-01), Rhodes et al.
patent: 4115134 (1978-09-01), Rhodes
patent: 4147744 (1979-04-01), Rhodes
patent: 4166831 (1979-09-01), Rhodes et al.
patent: 4545799 (1985-10-01), Rhodes et al.
patent: 4621761 (1986-11-01), Hammond et al.
patent: 4678868 (1987-07-01), Kraska et al.
patent: 4763828 (1988-08-01), Fukaya et al.
Metals Handbook Ninth Edition, vol. 6, pp. 1054-1057, copyright 1983.
G. C. Wei, M. R. Pascucci, E. A. Trickett, C. Brecher, and W. H. Rhodes, "Lanthana-Strengthened Yttria Domes and Windows," SPIE Proc. 968, 5-13 (1988).
G. C. Wei, C. Brecher, M. R. Pascucci, E. A. Trickett, and W. H. Rhodes, "Characterization of Lanthana-Strengthened Yttria Infrared Transmitting Materials," SPIE Proc. 929, 50-55 (1988).
G. C. Wei, M. R. Pascucci, C. Brecher, E. A. Trickett, and W. H. Rhodes, "Properties of Lanthana-Strengthened Yttria Infrared-Transmitting Windows," Proc. 19th Symposium on Electromagnetic Windows, pp. 106-115, Atlanta, GA (Sep. 1988).
W. G. Rhodes, G. C. Wei and E. A. Trickett, "Lanthana-Doped Yttria: A New Infrared Window Material," SPIE Proc. 683, 12-18 (1986).
W. H. Rhodes, "Controlled Transient Solid Second-Phase Sintering of Yttria," J. Am. Ceram. Soc. 64[1]12 (1981).
E. M. Dunn, S. Kang, H. Mizuhara, K. S. Kim, "Analytical and Experimental Evaluation of Joining Silicon Nitride to Metal and Silicon Carbide to Metal," Proceedings of the Twenty-Sixth Automotive Technology Development Contract Coordination Meeting, Dearborn, MI., Oct. 24-27, 1988, Society of Automotive Engineers, Inc., Warrendale, PA, submitted for publication.
S. K. Choi, L. Froyen, and M. J. Brabers in High Tech Ceramics, ed. P. Vincensini, Elsevier Science Pub., 1987, pp. 407-413.
D. F. Smith, "Low Expansion Superalloys," A Technical Report from Huntington Alloys.
Dunn Edmund M.
Kang Shinhoo
Wei George C.
Ericson Ivan L.
Godici Nicholas P.
GTE Laboratories Incorporated
Heinrich Samuel M.
LandOfFree
Method of brazing a ceramic article to a metal article does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of brazing a ceramic article to a metal article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of brazing a ceramic article to a metal article will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-577650