Tipo
Artigos em Conferência
Tipo de Documento
Resumo
Título
The Thermal Conductivity of Galinstan (Ga68.4In21.5Sn10) Alloy
Participantes na publicação
Maria José V. Lourenço (Author)
Dep. Química e Bioquímica
CQE
Miguel Alves (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
João M. Serra (Author)
Dep. Engenharia Geográfica, Geofísica e Energia
IDL
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Matthias Buschmann (Author)
Resumo
The need for new heat transfer agent for many applications, namely in the consumer electronics industry, requires materials, liquid at room temperature, with high thermal conductivity [1,2]. From the different possibilities, Galinstan, a eutectic alloy of Gallium, Indium and Tin with a melting point (Tm = 283.4 K)1 has been proposed for many applications, namely for replacing mercury, a toxic element used for many years [2,3].\n\nIt is the purpose of this paper to report thermal conductivity measurements of Galinstan, produced by Haines & Maassen Metallhandelsgesellschaft mbH, Bonn, Germany, with product name Gallium/Indium/Tin Eutectic (NL-011). The composition of the eutectic alloy was given by the manufacturer, as Ga68.4In21.5Sn10, although there is the presence of some components like Cu and Pb (around 0.0035 wt%) and Al and Zn (< 0.00005 wt%). The method used was the transient hot-strip, THS, and the details of the data acquisition system and platinum metal-film sensors, produced by PVD in ceramic substrates, have been presented recently [4] for measuring the thermal conductivity of air, at temperatures up to 800 ºC. In the current project the sensors had to be electrically insulated from the liquid conducting alloy, by developing a halogen-free, flame retardant coating, graded up to 600V insulation. Details of the measuring procedure will be reported. Measurements were performed between 28 and 103 ºC, at atmospheric pressure, with an estimated uncertainty of 5%, were fitted to a linear correlation. Results obtained are shown in Fig. 1, along with data of Plevachuk et al (2014)1, with an estimated uncertainty of 7%. \nSignificant references\n1. Y. Plevachuk, V. Sklyarchuk, S. Eckert, G. Gerbeth, R. Novakovic, J. Chem. Eng. Data vol. 59 (2014), pp. 757–763.\n2. P. Maivald, S. Sridar, W. Xiong, Thermo vol. 2 (2022), pp. 1–13. \n3. S. Handschuh-Wang, F. J. Stadler, and X. Zhou, J. Phys. Chem. C, vol. 125 (2021), pp. 20113-20142.\n4. C.S.G.P. Queirós, M.J.V. Lourenço, S.I. Vieira, J.M. Serra and C.A. Nieto de Castro, Rev. Sci. Instruments vol. 87 (2016), 065105.\n\n
Editor
Alberto Muscio
Data de Publicação
2023-09-10
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Evento
ECPT2023 – 22nd European Conference on Thermophysical Properties, Venice, Italy, September 10-13, 2023
Identificadores da Publicação
ISBN - 9791221042207
Local
Venice, Italy
Organizadores
Associazione Italiana Proprietà Termofisiche, University of Modena and Reggio Emilia, National Research Council of Italy and IUAV University of Venice
Editora
Associazione Italiana Proprietà Termofisiche
Coleção
Book of Abstracts
Número de Páginas
1
Página Inicial
31
Identificadores do Documento
ISBN - 9791221042207
Distinções
Maria José V. Lourenço, Keynote Address