Abstract
In the present investigation, the thermodynamic activities of iron in iron‐platinum solid alloys were measured by the solid electrolyte galvanic cell method in the temperature range 1073–1273 K. The galvanic cell employed can be represented as(−) Pt, Fe(s), FetO(s) // ZrO2(11 mol pct CaO) //FetO(s), Fe‐Pt alloys, Pt(+)The experimental set‐up as well as the satisfactory performance of the galvanic cell were validated by measuring the standard Gibbs energy of formation of CoO in equilibrium with Co in the same temperature range by replacing the working electrode by a Co, CoO mixture. 6 different Fe‐Pt alloys covering the entire composition range were studied and the results are compared with earlier thermodynamic studies available in the literature. The present experimental results are found to be in general agreement with those of Alcock and Kubik. The values were fitted into a regular solution description in order to estimate the enthalpies of mixing Pt and Fe in the solid alloys.
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.
