Gradus

VOL 3, NO 1 (2016): SPRING (APRIL)

 

THE RELATION BETWEEN THE SURFACE TENSION AND THE SURFACE TEXTURE FORMATION


Z. Weltsch

Abstract

Abstract. The temperature dependence of wetting angles ?(T) of Ag-M based melts (M: Cu, Zn, Ga) on graphite substrates are compared. The slope of ?(T) is negative, which follows from the spirit of Eötvös rule. The difference in the slope arises from the M alloying elements A texture formation was found in the substrate/drop interphase region after solidification. The enrichment (segregation) of Ag atoms in the interface layer was observed in the Ag-Ga alloy in the solidified structure. The action of the melt temperature was examined also on the degree of texture formation, which seems to be coupled with the magnitude of the contact angle.


Keywords

Keywords: wetting, contact angle, solid solubility, crystal orientation, texture,


References

[1] D. R. Andrews (1978): Soldering brazing welding and adhesives, ISBN 0-85510-016-8
[2] Peter Baumli: Solder Materials With Micro And Nanoparticles: A Review, Materials Science and Engineering,(2015)
[3] Z. Weltsch, A. Lovas (2009): The Investigation of Wetting Phenomena between Ceramic Substrates and Molten Ag-M (M=Cd, Sn, Sb) Alloys, Journal of Machine Manufacturing, Volume XLIX. Issue E3-E5, Special Triple Edition, HUISSN 0016-8580, pp 40-42.
[4] Z. Weltsch, G. Tichy, Á. Cziráki, A. Lovas: to be published
[5] Z. Weltsch, A. Lovas, J. Takács, A. Cziráki, G. Tichy, A. L. Toth, L. Illés (2010): Wetting Ability of Ag Based MoltenAlloys on Graphite Substrate, Nanocomposite Coatings and Nanocomposite Materials, Solid State Phenomena Vol.159 pp 117-120.
[6] Sylvan Z. Beer (1972): Liquid Metals, ISBN: 0-8247-1032-0, Marcel Dekker, INC., New York, pp. 165-169.
[7] Baumli Péter: Alacsony olvadáspontú ólommentes forraszanyagok, Anyagok Világa (Materials Word) 1 (2015) 24-34
[8] G. Kaptay: Modeling equilibrium grain boundary segregation, grain boundary energy and grain boundarysegregation transition by the extended Butler equation. J. Mater. Sci., 2016, vol.51, pp.1738-1755



Copyright (c) 2024 Gradus