Theory of metal—Ceramic adhesion

Abstract Fully self-consistent, all-electron density functional calculations were carried out for MgO/Ag(100) and MgO/Al(100) interfaces with and without interfacial monolayers of C and S impurities. These first-principles results indicate that both Ag and Al atoms favor the site on top of the O atom. Electron density distributions in the interface regions suggest a significant ionic component to the metal—ceramic bond. There were indications of a metallic/covalent component as well. All adhesion curves were found to accurately obey the universal energy relation. Impurities were found to cause substantial changes in adhesion energies, ranging from 9 to 61%. The contribution of misfit dislocation networks to the work of adhesion was found to be large. Excellent agreement with experiment was found for our computed work of adhesion and contact angle. Finally, application of the Harris functional was found to be accurate, opening the way to systems currently beyond the capability of the fastest computers.

[1]  O. K. Andersen,et al.  Bonding at metal-ceramic interfaces; AB Initio density-functional calculations for Ti and Ag on MgO , 1992 .

[2]  Painter,et al.  Harris functional and related methods for calculating total energies in density-functional theory. , 1990, Physical review. B, Condensed matter.

[3]  M. Finnis,et al.  The Harris functional applied to surface and vacancy formation energies in aluminium , 1990 .

[4]  A. M. Stoneham,et al.  ATOMISTIC MODELLING OF THE METAL/OXIDE INTERFACE WITH IMAGE INTERACTIONS , 1992 .

[5]  Methfessel,et al.  Cohesive properties of solids calculated with the simplified total-energy functional of Harris. , 1988, Physical review. B, Condensed matter.

[6]  G. Elssner,et al.  Ultra high vacuum diffusion bonded NbAl2O3 and CuAl2O3 joints—The role of welding temperature and sputter cleaning , 1992 .

[7]  H. Fischmeister,et al.  Influence of interface impurities on the fracture energy of UHV bonded niobium-sapphire bicrystals , 1992 .

[8]  Ching,et al.  Self-consistent band structures, charge distributions, and optical-absorption spectra in MgO, alpha -Al2O3, and MgAl2O4. , 1991, Physical review. B, Condensed matter.

[9]  P. Hohenberg,et al.  Inhomogeneous Electron Gas , 1964 .

[10]  C. P. Flynn,et al.  High resolution transmission electron microscopy studies of the Ag/MgO interface , 1992 .

[11]  Joshua R. Smith,et al.  Self-consistent local-orbital method for calculating surface electronic structure: Application to Cu (100) , 1980 .

[12]  S. H. Vosko,et al.  Accurate spin-dependent electron liquid correlation energies for local spin density calculations: a critical analysis , 1980 .

[13]  D. R. Sigler Adherence behavior of oxide grown in air and synthetic exhaust gas on Fe-Cr-Al alloys containing strong sulfide-forming elements: Ca, Mg, Y, Ce, La, Ti, and Zr , 1993 .

[14]  J. Nørskov,et al.  Optimized and transferable densities from first-principles local density calculations , 1991 .

[15]  B. Alder,et al.  THE GROUND STATE OF THE ELECTRON GAS BY A STOCHASTIC METHOD , 2010 .

[16]  Joshua R. Smith,et al.  Electronic structure of silver (100) , 1980 .

[17]  D. R. Sigler The influence of sulfur on adherence of Al2O3 grown on Fe-Cr-Al alloys , 1988 .

[18]  Joshua R. Smith,et al.  Origins of the universal binding-energy relation. , 1988, Physical review. B, Condensed matter.

[19]  D. Srolovitz,et al.  Metal / ceramic adhesion: a first principles study of MgO/Al and MgO/Ag , 1994 .

[20]  Richard J. Needs,et al.  Tests of the Harris energy functional , 1989 .

[21]  W. Kohn,et al.  Self-Consistent Equations Including Exchange and Correlation Effects , 1965 .

[22]  Nicolas Eustathopoulos,et al.  Wetting and interfacial bonding in ionocovalent oxide-liquid metal systems , 1988 .

[23]  O. Sankey,et al.  Ab initio multicenter tight-binding model for molecular-dynamics simulations and other applications in covalent systems. , 1989, Physical review. B, Condensed matter.

[24]  John R. Smith,et al.  Impurity effects on adhesive energies , 1989 .

[25]  D. Srolovitz,et al.  Developing potentials for atomistic simulations , 1992 .

[26]  Smith,et al.  Metal-ceramic adhesion and the Harris functional. , 1994, Physical review letters.

[27]  Smith,et al.  Impurity effects on adhesion: Nb, C, O, B, and S at a Mo/MoSi2 interface. , 1993, Physical review. B, Condensed matter.

[28]  Methfessel,et al.  Comparison of the Harris and the Hohenberg-Kohn-Sham functionals for calculation of structural and vibrational properties of solids. , 1990, Physical review. B, Condensed matter.

[29]  Smith,et al.  Avalanche in adhesion. , 1989, Physical review letters.

[30]  D. E. Parry The electrostatic potential in the surface region of an ionic crystal , 1975 .

[31]  Harris Simplified method for calculating the energy of weakly interacting fragments. , 1985, Physical review. B, Condensed matter.

[32]  Smith,et al.  Determining ab initio interfacial energetics. , 1992, Physical review. B, Condensed matter.

[33]  M. Finnis Metal-ceramic cohesion and the image interaction , 1992 .