The “Macroscopic Atom” Model: An Easy Tool to Predict Thermodynamic Quantities

  • A. K. Niessen
  • A. R. Miedema
Part of the NATO ASI Series book series (ASIC, volume 286)


The model developed by Miedema and coworkers [1–4] to predict enthalpy effects upon alloying uses the “macroscopic atom” as a basic concept to describe the microscopic geometry of alloys. The assumption that enthalpy effects are generated at the interface of dissimilar neighbouring “macroscopic atoms” enables one to predict the enthalpy of alloying. Not so well-known are the applications of “macroscopic atom” model to predict other quantities, such as surface energies, the enthalpy of formation of monovacancies and related topics. These quantities will be reviewed in this paper, emphazing the ease to estimate their values in a very simple way from a few experimental observations. This paper is a condensed version of a manuscript for three chapters of a book to be published by North-Holland Publishing Co. entitled “Cohesion in Metals” [5].


Amorphous Alloy Pure Metal Isomer Shift Atanic Cell Demarcation Line 
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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • A. K. Niessen
    • 1
  • A. R. Miedema
    • 1
  1. 1.Philips Research LaboratoriesEindhovenNetherlands

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