Thermodynamic Factors Governing Interfacial Chemistry And Wetting In Binary Alloy-Refractory Oxide Systems.
V., Merlin; P., Kritsalis; L., Coudurier; N., Eustathopoulos; V. Merlin; L.T.P.C.M., URA. 29. I.N.P.G.. D.U., ENSEEG, Bp. 75 38402 Saint Martin d'Hères Cedex, France.; P. Kritsalis; L.T.P.C.M., URA. 29. I.N.P.G.. D.U., ENSEEG, Bp. 75 38402 Saint Martin d'Hères Cedex, France.; L. Coudurier; L.T.P.C.M., URA. 29. I.N.P.G.. D.U., ENSEEG, Bp. 75 38402 Saint Martin d'Hères Cedex, France.; N. Eustathopoulos; L.T.P.C.M., URA. 29. I.N.P.G.. D.U., ENSEEG, Bp. 75 38402 Saint Martin d'Hères Cedex, France.
Журнал:
MRS Proceedings
Дата:
1991
Аннотация:
ABSTRACTFor a given non-reactive metal M- refractory oxide system, the influence of a metallic solute A on interfacial chemistry and wetting depends mainly on the value of ε<sub>O−A</sub> the Wagner interaction parameter which quantifies the solute A-solute oxygen interactions in the liquid matrix M.For ε<sub>O−A</sub> < 0 (moderate attraction between solutes A and O) additions of A in M enhance dissolution of oxide in the liquid alloy, thereby increasing the dissolved oxygen content. The O-A clusters formed are adsorbed at the metal-oxide interface leading to an increase in both wettability and adhesion energy. For ε<sub>O−A</sub> ≪0 (strong A-O interactions), solute A can also form an oxide by reduction of the substrate. The more metallic in character this oxide is, the more wettable it will be by molten metal.
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