Abstract
Atomic absorption spectroscopy was used to measure the thermodynamic activity of zinc at 643°K in solid ϵ phase AuZn alloys. Data were obtained by measuring the attenuation of the resonance line of zinc at 3076 Å by zinc vapor in equilibrium, with the alloy contained in an evacuated, sealed quartz cell. Relative partial molar and excess relative partial molar quantities were calculated from the data. The results indicate a decrease in slope of the activity coefficient of zinc with respect to mole fraction at approximately the same composition at which Massalski and King observed a reversal in the crystallographic axial ratio. The occurence of this anomaly in the thermodynamic data is also attributed to a zone overlap. The stability function, as proposed by Darken, was also evaluated for these alloys. It indicates the presence of a miscibility gap in the system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
