APPLICATION OF AN ADIABATIC CAL¬ORIMETER TO THE DETERMINATION OF THE HEATS OF FUSION AND HEATS OF FORMATION OF SEVERAL METALLIC COMPOUNDS

摘要

High temperature thermodynamic properties of metal alloys and refractory materials are important in both research and engineering. Reliable and precise measurements are difficult to make and require rather elaborate equipment. In recent years a commercial adiabatic calorimeter has been made available by the Rigaku Denki Company, Ltd., of Tokyo, Japan. The general operating principles of this apparatus are summarized;its application to the measurement of heats of fusion and transformation of materials, and heats of formation of intermetallic phases is described.