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Interfacial Reaction Between Molten Sn and Plasma Nitrided Stainless Steel

[+] Author Affiliations
Shingo Hattori, Naoya Matsubara, Ikuo Shohji

Gunma University, Kiryu, Gunma, Japan

Hideyuki Kuwahara

MPT, Kiryu, Gunma, Japan

Paper No. IPACK2013-73170, pp. V001T07A010; 6 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


Erosion behavior of plasma nitrided stainless steel by molten Sn was examined. To investigate the erosion behavior, the interfacial reaction was investigated at the temperature ranging from 350 to 450°C using plasma nitrided SUS304 and SUS316 stainless steel which sandwich pure Sn foil. As the results, it was found that the surface area of the nitrided layer is peeled and subsequently FeSn2 phases form in the reaction interface. FeSn2 phases grow toward molten Sn and Sn diffuses into the nitrided layer. Moreover, Ni3Sn4 phases form and grow in molten Sn. Apparent activation energies of the Sn diffusion into the nitrided layer were estimated to be 153 kJ/mol and 133 kJ/mol for plasma nitrided SUS304 and SUS316, respectively.

Copyright © 2013 by ASME



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