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Journal of Materials Science

, Volume 29, Issue 16, pp 4393–4398 | Cite as

A method for the calculation of interfacial energies in Al2O3 and ZrO2/liquid-metal and liquid-alloy systems

  • P. Nikolopoulos
  • S. Agathopoulos
  • A. Tsoga
Papers

Abstract

A method is proposed by which the interfacial energy, γSL, of polycrystalline solid oxides (Al2O3, ZrO2) in contact with liquid metals and certain binary liquid alloys can be calculated from the values of the surface energy of the oxides, γSV, and the liquid metals or liquid alloys, γLV, respectively. According to this method, the interfacial energy depends on the geometric mean of surface interactions, (γSV γLV)1/2, the molar volumes, V, of the solid and liquid phases, and a parameter, K, which depends on the geometric details of the oxide surface defined by the ion sites in the oxide as well as the stoichiometry of the elements in the oxide and is given by the equation,
$$\gamma _{SL} = \left( {K\frac{{V_{metal} }}{{V_{oxide} }} + 1} \right)^{2/3} (\gamma _{SV} \gamma _{LV} )^{1/2}$$
The method was verified using interfacial energy data obtained by measurements of the contact angle, θ, formed between the oxides and the liquid metals and liquid alloys with the sessile drop technique. A good agreement was observed between the calculated and the experimentally estimated values of γSL at the melting point of the metals and alloys.

Keywords

Oxide Al2O3 Melting Point Contact Angle Molar Volume 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • P. Nikolopoulos
    • 1
  • S. Agathopoulos
    • 2
  • A. Tsoga
    • 2
  1. 1.Chemical Engineering Department, Materials Science and Technology SectionUniversity of PatrasPatrasGreece
  2. 2.Institute of Chemical Engineering and High Temperature Chemical ProcessesPatrasGreece

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