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Title: 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:
 [1]
  1. (St. Petersburg, FL)
Issue Date:
Research Org.:
GENERAL ELECTRIC CO
OSTI Identifier:
865283
Patent Number(s):
4488673
Application Number:
06/403,219
Assignee:
United States of America as represented by United States (Washington, DC) SNL
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}
}

Patent:

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