Abstract
The wetting phenomena and adhesion between Ag-Cu-Zr molten alloys (where Zr is an active brazing element) and ZrB2-ceramic substrate have been investigated from theoretical and experimental point of view. The wetting phenomena of molten alloy/ceramic substrate depend on the bonding characteristics of liquid alloys and ceramics as well as the magnitude of interactive forces at the interface. Accordingly, the first step of this investigation is to determine the surface properties of Ag-Cu, Ag-Zr and Cu-Zr liquid alloys. The energetics of the bulk and the surface of liquid alloys have been analysed in the framework of statistical mechanical theory in conjunction with Quasi-Lattice Theory (QLT), through the study of the concentration dependence of various properties such as surface tension, surface composition, concentration fluctuations in the long wavelength limit and Warren-Cowley chemical short-range order parameter. Combining the Young and the Dupré equations, the obtained values of surface tension together with contact angle data have been used to calculate the work of adhesion.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference31 articles.
1. G.V. Samsonov and A.P. Epik: Tugoplavkie pokritiya (Metallurgiya, Moskva 1973).
2. G.V. Samsonov and I.M. Vinitskii: Handbook of refractory compounds (Plenum, London 1980).
3. N. Eustathopoulos, M. Nicholas and B. Drevet: Wettability at high temperatures (Pergamon Materials Series, Vol 3, Oxford, UK 1999).
4. R. Novakovic, E. Ricci, M.L. Muolo, D. Giuranno and A. Passerone: Intermetallics Vol. 11 (2003), p.1301.
5. B.D. Dunn: Metallurgical assessment of spacecraft parts, materials and processes (John Wiley & Sons, London 1997).
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