Xu Jianming

Thermodynamic properties of the intermetallic compounds Re2Fe14B (Re≡La, Ce, Y)

Abstract The intermetallic compounds Re 2 Fe 14 B (Re La, Ce, Y) with tetragonal structure were prepared. The chemical thermodynamic properties of the compounds were studied by using a galvanic cell with a CaF 2 single crystal as a solid electrolyte having an Re/ReF 3 reference electrode in the temperature range 900–1020 K.

Thermodynamic studies of YFe12−xVx and SmFe12−xVx alloys

Abstract The Invar alloys of YFe12−xVx (x=1.6, 2.0, 2.4, 2.8, 3.2) and SmFe12−xVx (x=2.4, 2.8) were prepared. The activity and the relative partial molar Gibbs free energy of the yttrium and samarium in the alloys were determined by the e.m.f. method using a single crystal of CaF2 as a solid electrolyte at temperatures of 920–1020 K and 900–1000 K respectively.