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Advanced Analysis of the Properties of Solid-Wire Electric Contacts Produced by Ultrasonic Welding and Soldering.
Logar, Andraz; Klobcar, Damjan; Nagode, Ales; Trdan, Uros; Cernivec, Gregor; Sharma, Abhay.
Afiliação
  • Logar A; Bosch Rexroth d.o.o., Zgornji Brnik 410, 4210 Brnik, Slovenia.
  • Klobcar D; Laboratory for Welding, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia.
  • Nagode A; Department of Materials and Metallurgy, University of Ljubljana, Askerceva 12, 1000 Ljubljana, Slovenia.
  • Trdan U; Laboratory for Welding, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia.
  • Cernivec G; Bosch Rexroth d.o.o., Zgornji Brnik 410, 4210 Brnik, Slovenia.
  • Sharma A; Faculty of Engineering Technology, KU Leuven, Jan Pieter de Nayerlaan 5, 2860 Sint-Katelijne Waver, Belgium.
Materials (Basel) ; 17(2)2024 Jan 09.
Article em En | MEDLINE | ID: mdl-38255501
ABSTRACT
The current article presents an advanced analysis of the properties of solid-wire electric contacts produced with ultrasonic welding and soldering. Soldering is generally used to join thin, solid copper wires to produce electrical contacts in small-volume production, as ultrasonic welding does not provide acceptable peel force and tensile strength due to the deformation and thinning of the wires. In this article, ultrasonic welding of thin, solid copper wires using a ring before and after a thermal shock test is discussed and compared with the standard soldering technique. The thermal shock test was carried out in the temperature range from -30 to 150 °C. Half of the samples, for both the joining techniques and the wires, were subjected to the thermal shock test; the other half were not. Investigations included electrical resistance tests, optical and SEM microscopy, XRD, microhardness measurements, peel tests, tensile tests, and fractographic analysis. The electrical resistance test, microscopy, microhardness measurements, and fracture examinations showed no differences between the thermal shock-exposed and the non-exposed samples with the same joining process. In mechanical tests, the ultrasonic joint demonstrated superior strength compared to the soldered joint.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Eslovênia País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Eslovênia País de publicação: Suíça