Advanced analysis of the properties of solid-wire electric contacts produced by ultrasonic welding and soldering

Logar, Andraž (avtor), Klobčar, Damjan (avtor), Nagode, Aleš (avtor), Trdan, Uroš (avtor), Černivec, Gregor (avtor), Sharma, Abhay (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: solid copper wires, ultrasonic welding, soldering, thermal shock test, joint strength, electrical conductivity
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 15 str.
• Številčenje: Vol. 17, iss. 2, [article no.] 334
• PID: 20.500.12556/RUL-153501
• UDK: 621.791
• ISSN pri članku: 1996-1944
• DOI: 10.3390/ma17020334
• COBISS.SI-ID: 180397827
• Datum objave v RUL: 10.01.2024

Gradivo je del revije

• Naslov: Materials
• Skrajšan naslov: Materials
• Založnik: MDPI
• ISSN: 1996-1944
• COBISS.SI-ID: 33588485

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: bakrene žice, ultrazvočno varjenje, spajkanje, test termičnega šoka, trdnost spoja, električna prevodnost