Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler
Patent
1996-02-29
1998-05-19
Heinrich, Samuel M.
Metal fusion bonding
Process
Metal to nonmetal with separate metallic filler
228175, 505927, B23K 3102
Patent
active
057526451
ABSTRACT:
The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly (20) has a superconducting metal-ceramic design. The srf window assembly (20) comprises a superconducting frame (30), a ceramic plate (40) having a superconducting metallized area, and a superconducting eyelet (50) for sealing plate (40) into frame (30). The plate (40) is brazed to eyelet (50) which is then electron beam welded to frame (30). A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the srf window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator.
REFERENCES:
patent: 4215327 (1980-07-01), McCrea
patent: 4719436 (1988-01-01), Garwin et al.
patent: 5474834 (1995-12-01), Tanahashi et al.
Elliott Thomas S.
Phillips Harry Lawrence
Heinrich Samuel M.
Southeastern Universities Research Ass., Inc.
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