Optimization and assessment of the Ag-Ca phase diagram

• Type: Article in International Scientific Journal
• Date: 2014

Authors

M. Helena Braga (Author) FEUP; Adam Debski (Author) Other; Władysław Gasior (Author) Other

Journal

Title: Journal of Alloys and Compounds

Vol. 612

Pages: 280-286

ISSN: 0925-8388

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 5 Citations

ISI Web of Science

Scopus - 4 Citations

Scientific classification

FOS: Natural sciences

Other information

Authenticus ID: P-009-M83

DOI: 10.1016/j.jallcom.2014.05.141

Abstract (EN): The Ag-Ca phase diagram was optimized and subsequently assessed. New data for the enthalpies of formation of the Ag9Ca2 and AgCa3 compounds were obtained by means of drop calorimetiy. Differential Thermal Analysis experiments were also performed and the resulting concentration/transformation temperatures could be compared with the phase diagram. First principles calculations were performed leading to the Gibbs free energies of each compound as a function of temperature. Tentative structures with possibility of being stable were found for Ag5Ca and AgCa3 compounds. Finally, the CALPHAD method was used to assess the phase diagram as well as all the available results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7