Thermodynamic, surface and structural properties of liquid Co-Si alloys


Autoria(s): Novakovic, R.; Giuranno, D.; Caccia, Mario; Amore, S.; Nowak, R.; Sobczak, N.; Narciso, Javier; Ricci, E.
Contribuinte(s)

Universidad de Alicante. Departamento de Química Inorgánica

Universidad de Alicante. Instituto Universitario de Materiales

Materiales Avanzados

Data(s)

22/06/2016

22/06/2016

01/09/2016

Resumo

The knowledge of thermophysical properties of liquid Co-Si alloys is a key requirement for manufacturing of composite materials by infiltration method. Despite this need, the experimental and predicted property data of the Co-Si system are scarce and often inconsistent between the various sources. In the present work the mixing behaviour of Co-Si melts has been analysed through the study of the concentration dependence of various thermodynamic, surface (surface tension and surface composition) and structural properties (concentration fluctuations in the long-wavelength limit and chemical short-range order parameter) in the framework of the Compound Formation Model (CFM) and Quasi Chemical Approximation for regular solutions (QCA). In addition, the surface tension of the Co22·5Si77.5 (in at%) eutectic alloy, that is proposed to be used as the infiltrant, has been measured by the pendant drop method at temperatures ranging from 1593 to 1773 K. The results obtained were discussed with respect to both, temperature and concentration, and subsequently compared with the model predictions and literature data.

Identificador

Journal of Molecular Liquids. 2016, 221: 346-353. doi:10.1016/j.molliq.2016.05.084

0167-7322 (Print)

1873-3166 (Online)

http://hdl.handle.net/10045/56117

10.1016/j.molliq.2016.05.084

Idioma(s)

eng

Publicador

Elsevier

Relação

http://dx.doi.org/10.1016/j.molliq.2016.05.084

Direitos

© 2016 Elsevier B.V.

info:eu-repo/semantics/embargoedAccess

Palavras-Chave #Co-Si liquid alloys #Thermodynamic modeling #Eutectic alloy #Pendant drop method #Surface tension #Química Inorgánica
Tipo

info:eu-repo/semantics/article