Partial Enthalpies of Silicon, Vanadium, Zirconium, Niobium and Molybdenum in Liquid Tin at High Dilution

The partial enthalpies of silicon, vanadium, zirconium, niobium and molybdenum in liquid tin at 1173 K were measured at high dilution by direct reaction calorimetry (drop method) with the help of a Tian-Calvet high-temperature calorimeter. When referred to liquid metals we found h si /kj. mol −1 = 99.4-263.0 x si , hv/kj. mol −1 = 102.8-14.8x v , h zr /kJ. mol −1 = 124.2-18.1x zr ,h Nb /kJ .mol −1 = 81.7 + 72.5x Nb and h Mo /kJ. mol −1 = 115.4-159.9x Mo . The limiting partial enthalpies were deduced by extrapolation at infinite dilution.