Aluminum. I. Measurement of the relative enthalpy from 273 to 929 K and derivation of thermodynamic functions for Al(s) from 0 K to Its melting point

摘要: The relative enthalpy of pure, polycrystalline aluminum (NBS Standard Reference Material 44f, for the freezing point on IPTS-68) has been measured over temperature range 273 to 929 K. measurements were made in a precision isothermal phase-change calorimeter and are believed have an inaccuracy not exceeding 0.2%. Pt-10Rh alloy quartz glass used as encapsulating materials. data Al(s) SiO2(l) fitted by method least squares with cubic polynomial functions temperature. Heat capacity Al(s), derived from these polynomials, smoothly merged using spline technique most reliable low-temperature heat below compared corresponding literature well published critical compilations Al(s). A new table thermodynamic derived. theoretical interpretation results apears following paper.