The experimental study of the Bi-Sn, Bi-Zn and Bi-Sn-Zn systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

M.H. Braga (Autor) FEUP; J. Vizdal (Autor) Outra; A. Kroupa (Autor) Outra; Delfim Soares (Autor) Outra; J. Ferreira (Autor) Outra; L. F. Malheiros (Autor) FEUP

Revista

Título: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

Vol. 31 Nº 4

Páginas: 468-478

ISSN: 0364-5916

Editora: Elsevier

Indexação

ISI Web of Knowledge - 53 Citações

ISI Web of Science

Scopus - 54 Citações

COMPENDEX

INSPEC

Classificação Científica

FOS: Ciências exactas e naturais > Física

CORDIS: Ciências Físicas > Física

Outras Informações

ID Authenticus: P-004-5W7

Abstract (EN): The binary Bi¿Sn was studied by means of SEM (Scanning Electron Microscopy)/EDS (Energy-Dispersive solid state Spectrometry), DTA (Differential Thermal Analysis)/DSC (Differential Scanning Calorimetry) and RT-XRD (Room Temperature X-Ray Diffraction) in order to clarify discrepancies concerning the Bi reported solubility in (Sn). It was found that (Sn) dissolves approximately 10 wt% of Bi at the eutectic temperature. The experimental effort for the Bi¿Zn system was limited to the investigation of the discrepancies concerning the solubility limit of Zn in (Bi) and the solubility of Bi in (Zn). Results indicate that the solubility of both elements in the respective solid solution is approximately 0.3 wt% at 200 C. Three different features were studied within the Bi¿Sn¿Zn system. Although there are enough data to establish the liquid miscibility gap occurring in the phase diagram of binary Bi¿Zn, no data could be found for the ternary. Samples belonging to the isopleths with w(Bi)  10% and w(Sn)  5%, 13% and 19% were measured by DTA/DSC. The aim was to characterize the miscibility gap in the liquid phase. Samples belonging to the isopleths with w(Sn)  40%, 58%, 77/81% and w(Zn)  12% were also measured by DTA/DSC to complement the study of Bi¿Sn¿Zn. Solubilities in the solid terminal solutions were determined by SEM/EDS. Samples were also analyzed by RT-XRD and HT-XRD (High Temperature X-Ray Diffraction) confirming the DTA/DSC results for solid state phase equilibria.

Idioma: Inglês

Tipo (Avaliação Docente): Científica