Direct metal brazing to cermet feedthroughs
Abstract
An improved method for brazing metallic components to a cermet surface in an alumina substrate eliminates the prior art metallized layer over the cermet via and adjoining alumina surfaces. Instead, a nickel layer is applied over the cermet surface only and metallic components are brazed directly to this nickel coated cermet surface. As a result, heretofore unachievable tensile strength joints are produced. In addition, cermet vias with their brazed metal components can be spaced more closely in the alumina substrate because of the elimination of the prior art metallized alumina surfaces.
- Inventors:
-
- (St. Petersburg, FL)
- Issue Date:
- Research Org.:
- General Electric Co., Boston, MA (United States)
- OSTI Identifier:
- 865283
- Patent Number(s):
- 4488673
- Application Number:
- 06/403,219
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- AC04-76DP00656
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- direct; metal; brazing; cermet; feedthroughs; improved; method; metallic; components; surface; alumina; substrate; eliminates; prior; metallized; layer; via; adjoining; surfaces; nickel; applied; brazed; directly; coated; result; heretofore; unachievable; tensile; strength; joints; produced; addition; vias; spaced; closely; elimination; metal components; metal component; metallic components; improved method; tensile strength; brazing metal; alumina substrate; metallic component; nickel layer; heretofore unachievable; /228/
Citation Formats
Hopper, Jr., Albert C. Direct metal brazing to cermet feedthroughs. United States: N. p., 1984.
Web.
Hopper, Jr., Albert C. Direct metal brazing to cermet feedthroughs. United States.
Hopper, Jr., Albert C. Tue .
"Direct metal brazing to cermet feedthroughs". United States. https://www.osti.gov/servlets/purl/865283.
@article{osti_865283,
title = {Direct metal brazing to cermet feedthroughs},
author = {Hopper, Jr., Albert C.},
abstractNote = {An improved method for brazing metallic components to a cermet surface in an alumina substrate eliminates the prior art metallized layer over the cermet via and adjoining alumina surfaces. Instead, a nickel layer is applied over the cermet surface only and metallic components are brazed directly to this nickel coated cermet surface. As a result, heretofore unachievable tensile strength joints are produced. In addition, cermet vias with their brazed metal components can be spaced more closely in the alumina substrate because of the elimination of the prior art metallized alumina surfaces.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {12}
}