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    STUDIA CHEMIA - Issue no. 1 / 2006  
         
  Article:   ESTIMATIONS OF SURFACE FREE ENERGIES FOR SOLID METALS.

Authors:  OSSI HOROVITZ, ANCA-LIANA POPOVICIU, ELENA-MARIA PICA.
 
       
         
  Abstract:  Experimental methods rarely give reliable values of the free surface energies/surface tensions for solid metals and just few data exist. Therefore correlations between surface and bulk thermodynamic properties are important in order to obtain estimated values for the surface quantities. From experimental values, molar free surface energies are calculated on the basis of molar volumes or atomic radii of metallic elements. The bulk properties considered here are melting point, enthalpy of atomization, free enthalpy of atomization and inner free enthalpy of atomization. Different correlations are investigated and the results are discussed and compared with the predictions of the rule of broken bonds between first neighbour atoms. The deviations of some elements from the regression lines are examined. From the correlations, a set of calculated free surface enthalpies for 69 solid elements is proposed.  
         
     
         
         
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