Journal
ACTA MATERIALIA
Volume 54, Issue 8, Pages 2205-2214Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2005.11.048
Keywords
wetting; interfaces; ceramics; brazing; capillary phenomena
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From results obtained over the last 10 years from simple reactive metal/ceramic model systems, a concept of reactive wetting has been formulated which suggests a direct relation between wetting and the physicochemical properties of the interfacial reaction products. The aim of this study is to examine whether this concept can help to understand and rationalise the sometimes conflicting results for the CuAg-Ti/alumina system, which is more complex but important in brazing. This was done using new wetting data generated by sessile drop experiments performed by varying the Ti content in the alloy and the furnace atmosphere (neutral gas and two levels of high vacuum). Experiments were carried out on monocrystalline alumina and also on polycrystalline alumina substrates of varying purity and roughness. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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