Title: Brazing methods using porous interlayers and related articles

Abstract

The disclosure relates to a brazing method for joining substrates, in particular where one of the substrates is difficult to wet with molten braze material. The method includes formation of a porous metal layer on a first substrate to assist wetting of the first substrate with a molten braze metal, which in turn permits joining of the first substrate with a second substrate via a braze metal later in an assembled brazed joint. Ceramic substrates can be particularly difficult to wet with molten braze metals, and the disclosed method can be used to join a ceramic substrate to another substrate. The brazed joint can be incorporated into a solid-oxide fuel cell, for example as a stack component thereof, in particular when the first substrate is a ceramic substrate and the joined substrate is a metallic substrate.

Inventors:

Nicholas, Jason Dale; Zhou, Quan; Bieler, Thomas Rector; Kerr, Rick Daniel

Issue Date:

Tue Nov 09 00:00:00 EST 2021

Research Org.:

Michigan State Univ., East Lansing, MI (United States); Delphi Technologies, LLC, Troy, MI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1860040

Patent Number(s):

11167363

Application Number:

15/975,318

Assignee:

Board of Trustees of Michigan State University (East Lansing, MI); Delphi Technologies, LLC (Troy, MI)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B23K1/0016 - {Brazing of electronic components}
B23K1/008 - Soldering within a furnace
B23K1/19 - taking account of the properties of the materials to be soldered
B23K1/20 - Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
B23K20/00 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
B23K20/026 - {with diffusion of soldering material}
B23K2101/36 - Electric or electronic devices
B23K2101/42 - Printed circuits

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M2008/1293 - {Fuel cells with solid oxide electrolytes}
H01M8/0232 - Metals or alloys
H01M8/0236 - Glass
H01M8/0245 - in the form of layered or coated products
H01M8/0282 - Inorganic material
H01M8/1246 - the electrolyte consisting of oxides

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/50 - Fuel cells

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DOE Contract Number:  

FE0023315

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/09/2018

Country of Publication:

United States

Language:

English