Dr. Ursula R. Kattner 

Metallurgy Division 
Materials Science and Engineering Laboratory 
NIST 
100 Bureau Dr. Stop 8554  
Gaithersburg, MD 20899-8554 
phone: 301-975-6044 
fax: 301-975-4553 
e-mail:  ursula.kattner@nist.gov 		 Dr. Kattner giving a seminar on phase equilibria

Current Research Interests

  •     Computational thermodynamics
  •     Alloy phase diagram evaluations
  •     Solder alloy systems
  •     Superalloy systems
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    Computational Thermodynamics and Alloy Phase Diagram Evaluations

    The experimental determination of phase diagrams is a time-consuming and costly task.   This becomes even more pronounced as the number of components increases.  The calculation of phase diagrams reduces the effort required to determine equilibrium conditions in a  multicomponent system and can provide numerical information that is frequently needed in other modeling efforts.  Phase equilibria calculations not only give the phases present and their compositions, but also provide numerical values of enthalpy content, temperature and concentration dependence of phase boundaries.
     

    Solder Alloy Systems

    It is imperative for candidate solder to have the appropriate melting temperature and freezing range.  The thermodynamic database can be used to predict these properties and also show the effects of non-equilibrium solidification.
     

    Superalloy Systems

    The calculation of phase equilibria provides a method to predict the fraction solid and heat content vs. temperature relationship during the solidification of multicomponent superalloys.  The thermodynamic database can be used with commercial software code for the simulation of casting processes

    More information is provided on the Metallurgy Division's web pages on

    Phase Diagrams & Computational Thermodynamics     		Phase Diagram Logo