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Effect of Additives in an Electrolyte on Mechanical Properties of Electrolytic Copper Foil

[+] Author Affiliations
Takuya Nagayama, Hiroaki Yoshida, Ikuo Shohji

Gunma University, Kiryu, Gunma, Japan

Paper No. IPACK2013-73172, pp. V001T07A012; 5 pages
  • ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
  • Volume 1: Advanced Packaging; Emerging Technologies; Modeling and Simulation; Multi-Physics Based Reliability; MEMS and NEMS; Materials and Processes
  • Burlingame, California, USA, July 16–18, 2013
  • Conference Sponsors: Electronic and Photonic Packaging Division
  • ISBN: 978-0-7918-5575-1
  • Copyright © 2013 by ASME


The effect of additives in electrolyte on mechanical properties of electrolytic copper foil was investigated. Bis-(3-sulfopropyl)-disulfide disodium salt (SPS), animal protein of low molecular (PBF) and hydroxyethyl cellulose (HEC) were added in electrolyte as additives. The additive amount of SPS was changed in this study. The addition of SPS is effective to improve tensile strength and hardness of electrolytic copper foil. With increasing the additive amount of SPS, the grain of electrolytic copper became finer and thus its hardness and elastic modulus increased. On the other hand, fatigue properties improved when the additive amount of SPS decreased and the grain size of electrolytic copper became relative large.

Copyright © 2013 by ASME



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