High temperature capable braze assembly
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United States of America Patent
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Feb 21, 2023
Grant Date -
Mar 25, 2021
app pub date -
Sep 24, 2020
filing date -
Sep 25, 2019
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Abstract
The present invention relates to an article comprising a ceramic substrate (310) comprising a source of zirconium oxide; a metallic substrate (320); and a braze joint disposed between the ceramic substrate and the metallic substrate. The braze joint comprises (i) a gold rich phase (330) interfacing against a surface of the ceramic substrate. The gold rich phase comprises a refractory metal selected from the group consisting of molybdenum, tungsten, niobium, tantalum and combinations thereof; and (ii) a second metallic phase (340) comprising a metal selected form the group consisting of nickel, iron, vanadium, cobalt, chromium, osmium, tantalum or combinations thereof.
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