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Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems

The design of processing routes involving the presence of the liquid phase is mainly associated with the knowledge of its surface and transport properties. Despite this need, due to experimental difficulties related to high temperature measurements of metallic melts, for many alloy systems neither t...

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Detalles Bibliográficos
Autores principales: Novakovic, Rada, Delsante, Simona, Giuranno, Donatella
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541306/
https://www.ncbi.nlm.nih.gov/pubmed/34683615
http://dx.doi.org/10.3390/ma14206024
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author Novakovic, Rada
Delsante, Simona
Giuranno, Donatella
author_facet Novakovic, Rada
Delsante, Simona
Giuranno, Donatella
author_sort Novakovic, Rada
collection PubMed
description The design of processing routes involving the presence of the liquid phase is mainly associated with the knowledge of its surface and transport properties. Despite this need, due to experimental difficulties related to high temperature measurements of metallic melts, for many alloy systems neither thermodynamic nor thermophysical properties data are available. A good example of a system lacking these datasets is the Ir-Si system, although over the last fifty years, the structures and properties of its solid phases have been widely investigated. To compensate the missing data, the Gibbs free energy of mixing of the Ir-Si liquid phase was calculated combining the model predicted values for the enthalpy and entropy of mixing using Miedema’s model and the free volume theory, respectively. Subsequently, in the framework of statistical mechanics and thermodynamics, the surface properties were calculated using the quasi-chemical approximation (QCA) for the regular solution, while to obtain the viscosity, the Moelwyn-Hughes (MH) and Terzieff models were applied. Subsequently, the predicted values of the abovementioned thermophysical properties were used to model the non-reactive infiltration isotherm of Ir-Si (eutectic)/SiC system.
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spelling pubmed-85413062021-10-24 Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems Novakovic, Rada Delsante, Simona Giuranno, Donatella Materials (Basel) Article The design of processing routes involving the presence of the liquid phase is mainly associated with the knowledge of its surface and transport properties. Despite this need, due to experimental difficulties related to high temperature measurements of metallic melts, for many alloy systems neither thermodynamic nor thermophysical properties data are available. A good example of a system lacking these datasets is the Ir-Si system, although over the last fifty years, the structures and properties of its solid phases have been widely investigated. To compensate the missing data, the Gibbs free energy of mixing of the Ir-Si liquid phase was calculated combining the model predicted values for the enthalpy and entropy of mixing using Miedema’s model and the free volume theory, respectively. Subsequently, in the framework of statistical mechanics and thermodynamics, the surface properties were calculated using the quasi-chemical approximation (QCA) for the regular solution, while to obtain the viscosity, the Moelwyn-Hughes (MH) and Terzieff models were applied. Subsequently, the predicted values of the abovementioned thermophysical properties were used to model the non-reactive infiltration isotherm of Ir-Si (eutectic)/SiC system. MDPI 2021-10-13 /pmc/articles/PMC8541306/ /pubmed/34683615 http://dx.doi.org/10.3390/ma14206024 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Novakovic, Rada
Delsante, Simona
Giuranno, Donatella
Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title_full Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title_fullStr Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title_full_unstemmed Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title_short Design of Composites by Infiltration Process: A Case Study of Liquid Ir-Si Alloy/SiC Systems
title_sort design of composites by infiltration process: a case study of liquid ir-si alloy/sic systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541306/
https://www.ncbi.nlm.nih.gov/pubmed/34683615
http://dx.doi.org/10.3390/ma14206024
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