Brazed joint between a beryllium-base part and a part...

Details Brazed joint between a beryllium-base part and a part... Brazed joint between a beryllium-base part and a part...

B - Operations, Transporting

22

F

13/19

B22F 7/00 (2006.01) B23K 1/19 (2006.01) B23K 35/00 (2006.01)

Patent

CA 1061964

ABSTRACT OF THE DISCLOSURE A brazed joint between a beryllium-base part and a copper-base part comprises a first layer of brazing material in contact with the beryllium- base part. This brazing material is an alloy that just prior to brazing consists essentially of silver and a minor constituent of either: (a) tin in a percentage of 4% it 15% by weight of the alloy, (b) silicon in a percentage of 1% to 5% by weight of the alloy. or (c) indium in a percentage of 6% to 25% by weight of the alloy. Contacting this first layer and brazed thereto is a second layer of a material that just prior to brazing consists essentially of silver. Between the second layer and the copper-base part, there is another brazed conn- ection, which is formed at temperatures exceeding 600°C.

263264

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