Paper Title:
Welding of Fine Metal Particles by Using a Tungsten Needle and Measurement of the Strength of the Joints
  Abstract

Gold particles several tens of micrometers in size were welded onto a gold substrate. High voltages of 4 kV or more were applied to a tungsten needle in contact with the particle on the substrate at a very low contact pressure. The particle was welded to the substrate in an instant with sparks. The needle was then retracted to 20 !m above the particle and a high voltage of about 2kV was applied to the needle. An electric discharge between the needle and the substrate enveloped the particle, and the joint was strengthened. The joint strength was measured, and the fractured surface was examined by scanning electron microscopy and scanning laser microscopy. The mechanism of joint strengthening is discussed. It is clear that an inert gas flow during the electric discharge is necessary to strengthen the joints.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1027-1030
DOI
10.4028/www.scientific.net/MSF.561-565.1027
Citation
T. Konno, M. Egashira, M. Kobayashi, "Welding of Fine Metal Particles by Using a Tungsten Needle and Measurement of the Strength of the Joints", Materials Science Forum, Vols. 561-565, pp. 1027-1030, 2007
Online since
October 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Surina Othman, F.K. Yam, Abu Hassan Haslan, Hassan Zainuriah
Abstract:In this study, we investigated the contact characteristics of bi-layer thin films, Ag (200nm)/Ti (100nm) on Si-doped n-type Al0.27Ga0.73N...
281
Authors: Jung Won Seo, Seok Jin Kwon, Hyun Mu Hur, Jae Boong Choi, Young Jin Kim
Abstract:Railway wheels and axles have been one of the most critical components in a railway vehicle. The service conditions of railway vehicles have...
640
Authors: Qing Dong Yan, Cheng Liu, Wei Wei
Abstract:The contact and non-contact measuring methods were adopted to measure the twisted blades of the turbine in a casting torque converter. The...
2102
Authors: Xian Ying Feng, Hui Li, Ming Jun Yue, Yan Ying Su
Chapter 3: Advanced Manufacturing Technology (1)
Abstract:Globoidal continuous cam with ball is a new type of transmission mechanism which can realize rolling instead of sliding. By designing the...
1254
Authors: Li Chun Feng, Da Peng Chen, Zhi Zeng, Ning Tao
Chapter 11: Measurement, Testing and Detection
Abstract:In ultrasound excited thermography method, high energy ultrasound is used as exciting source which can stimulate the defects such as crack...
1627