Optimization and assessment of the Ag-Ca phase diagram

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

M. Helena Braga (Autor) FEUP; Adam Debski (Autor) Outra; Władysław Gasior (Autor) Outra

Revista

Título: Journal of Alloys and Compounds

Vol. 612

Páginas: 280-286

ISSN: 0925-8388

Editora: Elsevier

Indexação

ISI Web of Knowledge - 5 Citações

ISI Web of Science

Scopus - 4 Citações

Classificação Científica

FOS: Ciências exactas e naturais

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7