Gas-tight metal/ceramic or metal/metal seals for...

Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

06843406

ABSTRACT:
A method of joining metal and metal, or metal and ceramic parts, wherein a first metal part is selected and then processed to form a bond coat that will effectively bond to a sealing material which in turn bonds to a second metal or ceramic part without degrading under the operating conditions of electrochemical devices. Preferred first metal parts include alumina forming alloys from the group consisting of ferritic stainless steels (such as Fecralloys), austinetic stainless steels, and superalloys, and chromia forming alloys formed of ferritic stainless steels. In the case of chromia forming ferritic stainless steels, this bond coat consists of a thin layer of alumina formed on the surface, with a diffusion layer between the first metal part and this thin layer. The bond coat provides a good bonding surface for a sealing layer of glass, braze or combinations thereof, while at the same time the diffusion layer provides a durable bond between the thin alumina layer and the first metal part. In the case of alumina forming alloys, the bond coat consists of cauliflower-like growths of an aluminum oxide nodules embedded in the surface of the alumina forming alloys.

REFERENCES:
patent: 3862488 (1975-01-01), Pessell et al.
patent: 3873944 (1975-03-01), Vaguine et al.
patent: 4109031 (1978-08-01), Marscher
patent: 4763828 (1988-08-01), Fukaya et al.
patent: 4774154 (1988-09-01), Singelyn et al.
patent: 4801067 (1989-01-01), Kondo et al.
patent: 4978052 (1990-12-01), Fister et al.
patent: 5110691 (1992-05-01), Krasij et al.
patent: 5330088 (1994-07-01), Whitlow et al.
patent: 5366136 (1994-11-01), Pagnon
patent: 5427302 (1995-06-01), Horino et al.
patent: 5453331 (1995-09-01), Bloom et al.
patent: 5706999 (1998-01-01), Lim et al.
patent: 5776620 (1998-07-01), Josso et al.
patent: 5807626 (1998-09-01), Naba
patent: 5942348 (1999-08-01), Jansing et al.
patent: 6096181 (2000-08-01), Friese et al.
patent: 6131797 (2000-10-01), Gasdaska et al.
patent: 6271158 (2001-08-01), Xue et al.
patent: 6410161 (2002-06-01), Li
patent: 6430966 (2002-08-01), Meinhardt et al.
patent: 6434946 (2002-08-01), Shaw et al.
patent: 6599645 (2003-07-01), Wittebrood
patent: 6637643 (2003-10-01), Hasz et al.
patent: 20020102431 (2002-08-01), Wittebrood et al.
patent: 54112357 (1979-09-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Gas-tight metal/ceramic or metal/metal seals for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas-tight metal/ceramic or metal/metal seals for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas-tight metal/ceramic or metal/metal seals for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3400837

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.