Thermodynamic activity measurements of iron in Fe-Zr alloys by high temperature mass spectrometry

Sylvie Chatain (1) , Bruno Larousse (1) , Claude Maillault (1) , C. Gueneau (1) , Christian Chatillon (2)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 SIMaP - Science et Ingénierie des Matériaux et Procédés

The thermodynamic activity of Fe in the Fe-Zr alloys respectively for the temperature and composition ranges of $T$= 1501 K 1852 K and $x_{Zr}$ = 50-95 at.%, has been measured by the multiple Knudsen effusion cell mass spectrometric method. The liquidus temperature of the three compositions 55, 60 and 85 Zr at. percent are determined from the variations of activity and compared with the literature data.

Mots clés: thermodynamic; high temperature mass spectrometry; iron-zirconium system.; activity measurement

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

Sylvie Chatain, Bruno Larousse, Claude Maillault, C. Gueneau, Christian Chatillon. Thermodynamic activity measurements of iron in Fe-Zr alloys by high temperature mass spectrometry. journal of alloy and compounds, 2009, 457 (1-2), pp.157-163. ⟨10.1016/j.jallcom.2007.03.002⟩. ⟨cea-02355402⟩