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Braze alloy spreading on steelScanning electron microscopy (SEM) and Auger electron microscopy (AEM) were employed to observe elemental surface decomposition resulting from the brazing of a copper-treated steel. Two types of steel were used for the study, stainless steel (treated with a eutectic silver-copper alloy), and low-carbon steel (treated with pure copper). Attention is given to oxygen partial pressure during the processes; a low enough pressure (8 x 10 to the -5th torr) was found to totally inhibit the spreading of the filler material at a fixed heating cycle. With both types of steel, copper treatment enhanced even spreading at a decreased temperature.
Document ID
19780041610
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Siewert, T. A.
(Chemetron Corp. Hanover, Pa., United States)
Heine, R. W.
(Wisconsin Univ. Madison, WI, United States)
Lagally, M. G.
(Wisconsin, University Madison, Wis., United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1978
Subject Category
Mechanical Engineering
Accession Number
78A25519
Funding Number(s)
CONTRACT_GRANT: NAS8-28733
Distribution Limits
Public
Copyright
Other

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