Welding Thin Pt Wires with Dissimilar Diameters by Joule Heating

Fujimori, Masato; Tohmyoh, Hironori

doi:10.7567/jjap.52.06gh01

Cited by 9 publications

(9 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the authors used this value of C to determine D cr . In our previous study, where tips of thin Pt wires were welded onto the tips of other Pt wires having the relatively thicker diameters, the critical diameter of the thicker Pt wire, where the welding condition was independent of the properties of the thicker wire, existed (Fujimori and Tohmyoh, 2013).…”

Section: Theoretical Modelingmentioning

confidence: 96%

Joule heat welding of thin wires to thin films

Tohmyoh

Fujimori

2014

Mechanical Engineering Journal

Self Cite

View full text Add to dashboard Cite

To effectively use micro or nano materials and create advanced materials systems from them, welding techniques for such small scale materials are vital. For this purpose, the tips of two thin wires were welded together with Joule heat and the conditions required to achieve it was discovered experimentally. In this paper, the Joule heat welding of thin wires to thin films deposited on substrates is described. To derive the conditions required to achieve this, a heat conduction model for a cylindrical element in the film located at the contact between the wire and the film is considered and the critical thickness of the film above which the welding conditions are independent of film thickness is derived analytically. The validity of the heat conduction model was experimentally verified by welding 0.8 m diameter Pt wires onto thin Pt films on electrically-insulated substrates. The experiments are performed for various combinations of the length of the wire and the thickness of the films. The current required for welding the wires onto the films having the thickness over the critical thickness are investigated and the conditions required for the welding are found to be coincident with those for welding the tips of two wires with Joule heat.

show abstract

Section: Theoretical Modelingmentioning

confidence: 96%

Joule heat welding of thin wires to thin films

Tohmyoh

Fujimori

2014

Mechanical Engineering Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…Welding the end of one thin wire to the side of another to create complex wire structures by repeatedly carrying out the welding process has also been done. 27) Moreover, Joule heat welding of thin wires with different thicknesses, 28) and that of wires to substrates 29) have also been reported. To expand the applicability of the Joule heat welding technique, not only welding similar metals, but also welding dissimilar metal materials is very much demanded.…”

Section: Introductionmentioning

confidence: 98%

Welding dissimilar metal microwires by Joule heating

Sunagawa¹,

Tohmyoh²

2015

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

In this paper we report on the Joule heat welding of dissimilar metal microwires. The current required for successful welding was investigated. Various combinations of 25 µm diameter Cu, Au and Al microwires were welded together using this technique. The welded dissimilar metal wire systems were then cut by supplying a higher current, and it was found that the position at which the wires cut was not at the midpoint, i.e., the position of the weld, of the wire system. This is because the temperature distributions formed in the dissimilar metal systems were asymmetrical. The positions at which the wires cut were in good agreement with those predicted by a heat conduction model. The lower limit for successful welding of the dissimilar metal microwire system was found to be determined by the lower of the two currents required to cut microwires of the individual materials.

show abstract

“…Welding using ultrasonic vibration has been studied previously. [1][2][3][4][5][6][7] Ultrasonic welding is a technology that enables welding of metals by superposing the base materials to be welded and applying ultrasonic vibration. Since ultrasonic welding does not involve heating, it is able to weld different metals that have different melting points.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic complex vibration source using two longitudinal vibration transducers and a uniform rod with diagonal slits

Saegusa

Asami

Miura

2021

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

It has been reported that ultrasonic welding using planar vibrations results in higher weld strength and less damage to the work pieces compared with ultrasonic welding using linear vibrations. However, torsional vibration transducers are small and expensive, thus reducing flexibility in the use of the vibration source. Therefore, in this study, we developed an ultrasonic longitudinal-torsional vibration source using longitudinal vibration transducers and a uniform rod with diagonal slits. The proposed vibration source generates torsional vibration by using a uniform rod with diagonal slits instead of a conventional torsional vibration transducer. As a result, it is found that a planar vibration locus is obtained by inputting two resonance frequencies simultaneously.

show abstract

Welding Thin Pt Wires with Dissimilar Diameters by Joule Heating

Cited by 9 publications

References 32 publications

Joule heat welding of thin wires to thin films

Joule heat welding of thin wires to thin films

Welding dissimilar metal microwires by Joule heating

Ultrasonic complex vibration source using two longitudinal vibration transducers and a uniform rod with diagonal slits

Contact Info

Product

Resources

About