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Metal/ceramics substrates are of great importance in many technological applications and fundamental understanding of physical behavior of the adhesion between two different materials . In this context, we investigate the dependence of adhesion energy, Wad, on elastic parameters of these systems. To do so, we considered several metals (Au, Cu, Sn, Ga and Ag) on a great number of ceramic substrates (AlN, Al 2O3, BN, CoO, Er2O3, Ho2O3, LaB6, Lu2O3, MgO, NiO, SiC, SiO2, Si3N4, TiC, TiO, TiO2, Ti2O3, Y2O3, Yb2O3, ZnO and Zr2O3). Different approaches are used. Semi-empirical relations are deduced for all systems. It is shown that, in all cases, the adhesion energy increases linearly with Rayleigh velocities, VR; it takes the form: Wad. = 0.07 VR + C. However, the characteristic term C strongly depends on the system combination as well as on the energy gap of the ceramics: it is higher for small gap materials due to the ease of electron transfer through the metal/ceramic interface and vice-versa. The importance of this relation lies in its universality and applicability to all investigated combinations. Moreover, it could be extended, through familiar relations, to other elastic parameters..
Adhesion, Energy gap, Ceramics, Metals, Elastic parameters.
Z. HADEF, A. DOGHMANE, Z. HADJOUB, Analytical investigation of adhesion in metals/ceramic systems via elastic parameters, Optoelectronics and Advanced Materials - Rapid Communications, 12, 9-10, September-October 2018, pp.608-612 (2018).
Submitted at: March 12, 2018
Accepted at: Oct. 10, 2018