Volume 4, Issue 1, January 1975
Index of content:
4(1975); http://dx.doi.org/10.1063/1.555517View Description Hide Description
The thermodynamic tabulations previously published in NSRDS‐NBS‐37 and the 1974 supplement (J. Phys. Chem. Ref. Data 3, 311 ) are extended by 158 new and revised tables. The JANAF Thermochemical Tables cover the thermodynamic properties over a wide temperature range with single phase tables for the crystal, liquid, and ideal gas state. The properties given are heat capacity,entropy,Gibbs energy function, enthalpy, enthalpy of formation,Gibbs energy of formation, and the logarithm of the equilibrium constant for formation of each compound from the elements in their standard reference states. Each tabulation lists all pertinent input data and contains a critical evaluation of the literature upon which these values are based. Literature references are given.
Diffusion in copper and copper alloys. Part III. Diffusion in systems involving elements of the groups IA, IIA, IIIB, IVB, VB, VIB, and VIIB4(1975); http://dx.doi.org/10.1063/1.555516View Description Hide Description
A survey, comparison, and critical analysis is presented of data compiled from the scientific literature concerning diffusion in copper alloy systems involving elements in Groups IA, IIA, IIIB, IVB, VB, VIB, and VIIB. Here the term ’’copper alloy system’’ is interpreted in the broadest sense. For example, the review of diffusion in the Cu‐M system reports all diffusion situations which involve both copper and element M, including diffusion of Cu in M or in any binary, ternary or multicomponent alloy containing M; diffusion of M in Cu or in any alloy containing Cu; and diffusion of any element in any alloy containing both Cu and M. Topics include volume diffusion,surfacediffusion,grain boundarydiffusion, tracer diffusion, alloy interdiffusion,electromigration, thermomigration, dislocation‐pipe diffusion, and diffusion in molten metals. An extensive biblography is presented along with figures, tabular presentation of data and discussion of results.
4(1975); http://dx.doi.org/10.1063/1.555518View Description Hide Description
The ideal gas thermodynamic properties [H °−H °0, (G°−H °0)/T, (H °−H °0)/T, S °, C °p, ΔH f °, ΔG f °, and log K f ] for ethylene and propylene in the temperature range 0 to 1500 K and at 1 atm have been calculated by the statistical thermodynamic method employing the most recent fundamental and molecular spectroscopic constants. The internal rational contributions to thermodynamic properties for propylene were generated based on an internal rotation partition function formed by summation of internal rotation energy levels. The energy levels were derived from the potential function V (cm− 1) =349.2(1−cos 3ϑ)−6.5(1−cos 6ϑ). The calculated heat capacities and entropies were compared with the available experimental values.