Brazing methods using porous interlayers and related articles

Patent · 09 November 2021

OSTI ID:1860040

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

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.

• Research Organization: Michigan State Univ., East Lansing, MI (United States); Delphi Technologies, LLC, Troy, MI (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0023315
• Assignee: Board of Trustees of Michigan State University (East Lansing, MI); Delphi Technologies, LLC (Troy, MI)
• Patent Number(s): 11,167,363
• Application Number: 15/975,318
• OSTI ID: 1860040
• Country of Publication: United States
• Language: English