Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters

This paper treats the Joule heat welding of thin Pt wires having various diameters. Joining of fine-scale materials, such as micro- or nanowires, has been essential to create advanced materials systems. Joule heat welding is one of the suitable way for this purpose. It has been reported that thin wi...

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Autores principales:	Hironori TOHMYOH, Kanta YAMAGUCHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	joule heating welding thin wire diameter thermal boundary conditions Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/89aee6021c824669b2e3350c762ab58f
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spelling	oai:doaj.org-article:89aee6021c824669b2e3350c762ab58f2021-11-29T05:43:34ZThermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters2187-974510.1299/mej.18-00509https://doaj.org/article/89aee6021c824669b2e3350c762ab58f2019-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/3/6_18-00509/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper treats the Joule heat welding of thin Pt wires having various diameters. Joining of fine-scale materials, such as micro- or nanowires, has been essential to create advanced materials systems. Joule heat welding is one of the suitable way for this purpose. It has been reported that thin wires were welded together under the supply of constant direct current, and the welding condition was sensitive to the thermal boundary conditions around the wires under the current supply, which was affected by the heat transfer from the wire surface to the ambient and the heat conduction at the ends for the current supply. The diameters of thin Pt wires were 0.8-20 μm, and the current required to cut the wire by Joule heating was investigated. The temperature of the wire having the smaller diameter was easily increased by Joule heating, and this became remarkable with increasing the slenderness ratio, i.e., the ratio of the diameter to the length for current supply. An index related to the temperature of the wire under the current supply was introduced to describe the thermal boundary conditions around the wire. The behavior of the index against the diameter was approximated by the exponential functions, and the thermal boundary conditions around the wires having various diameters became predictable. Finally, the validity of the thermal boundary conditions determined and predicted in this study was verified by conducting the experiments to cut and weld the wires by Joule heating.Hironori TOHMYOHKanta YAMAGUCHIThe Japan Society of Mechanical Engineersarticlejoule heatingweldingthin wirediameterthermal boundary conditionsMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00509-18-00509 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	joule heating welding thin wire diameter thermal boundary conditions Mechanical engineering and machinery TJ1-1570
spellingShingle	joule heating welding thin wire diameter thermal boundary conditions Mechanical engineering and machinery TJ1-1570 Hironori TOHMYOH Kanta YAMAGUCHI Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
description	This paper treats the Joule heat welding of thin Pt wires having various diameters. Joining of fine-scale materials, such as micro- or nanowires, has been essential to create advanced materials systems. Joule heat welding is one of the suitable way for this purpose. It has been reported that thin wires were welded together under the supply of constant direct current, and the welding condition was sensitive to the thermal boundary conditions around the wires under the current supply, which was affected by the heat transfer from the wire surface to the ambient and the heat conduction at the ends for the current supply. The diameters of thin Pt wires were 0.8-20 μm, and the current required to cut the wire by Joule heating was investigated. The temperature of the wire having the smaller diameter was easily increased by Joule heating, and this became remarkable with increasing the slenderness ratio, i.e., the ratio of the diameter to the length for current supply. An index related to the temperature of the wire under the current supply was introduced to describe the thermal boundary conditions around the wire. The behavior of the index against the diameter was approximated by the exponential functions, and the thermal boundary conditions around the wires having various diameters became predictable. Finally, the validity of the thermal boundary conditions determined and predicted in this study was verified by conducting the experiments to cut and weld the wires by Joule heating.
format	article
author	Hironori TOHMYOH Kanta YAMAGUCHI
author_facet	Hironori TOHMYOH Kanta YAMAGUCHI
author_sort	Hironori TOHMYOH
title	Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
title_short	Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
title_full	Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
title_fullStr	Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
title_full_unstemmed	Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters
title_sort	thermal boundary conditions around thin pt wires under the current supply and its application for joule heat welding of wires having various diameters
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/89aee6021c824669b2e3350c762ab58f
work_keys_str_mv	AT hironoritohmyoh thermalboundaryconditionsaroundthinptwiresunderthecurrentsupplyanditsapplicationforjouleheatweldingofwireshavingvariousdiameters AT kantayamaguchi thermalboundaryconditionsaroundthinptwiresunderthecurrentsupplyanditsapplicationforjouleheatweldingofwireshavingvariousdiameters
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Thermal boundary conditions around thin Pt wires under the current supply and its application for Joule heat welding of wires having various diameters

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