Effects of trace phosphorus in Sn-Cu-Ni wave solder dross

Kazuhiro Nogita, Mohd Arif Anuar Mohd Salleh, Xuan Q. Tran, Jonathan Read, Selena Smith, Stuart D. McDonald

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Phosphorus (P) is often added to wave-solder baths as an anti-oxidation agent for older generation eutectic Sn-37wt%Pb solders. For Pb-free solder alloys trace amounts of germanium (Ge) have been added successfully in Sn-0.7wt%Cu-0.05wt%Ni for anti-oxidation purposes during the wave soldering process. Despite this practice, there is little information on how P and Ge distribute in solder alloys and dross in this alloy system. In this paper, the effects of combinations of trace levels of Ge (< 100ppm) and P (< 100ppm) in Sn-Cu-Ni solder alloys and their dross has been investigated by XRD and SEM/EDS. It was found that the weight fraction of tin oxides in the dross is increased with an addition of less than 100ppm P. The dross consists on SnO oxide with Sn in samples containing Ge and no P, while SnO and SnO2 oxide are both present when P and Ge additions are made. In samples containing P, (Cu,Ni)6Sn5 and Ni-P and/or Ni-Sn-P intermetallics particles were found.

Original languageEnglish
Title of host publicationAdvanced Materials Engineering and Technology IV
EditorsMohd Mustafa Al Bakri Abdullah, Rafiza Abd Razak, Muhammad Faheem Mohd Tahir, Mohd Mustafa Al Bakri Abdullah, Rafiza Abd Razak, Liyana Jamaludin
PublisherTrans Tech Publications Ltd
Pages49-52
Number of pages4
ISBN (Print)9783035710205
DOIs
Publication statusPublished - Jan 1 2016
Externally publishedYes
EventInternational Conference on Advanced Materials Engineering and Technology, ICAMET 2015 - Kaohsiung, Taiwan, Province of China
Duration: Dec 4 2015Dec 5 2015

Publication series

NameMaterials Science Forum
Volume857
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

OtherInternational Conference on Advanced Materials Engineering and Technology, ICAMET 2015
CountryTaiwan, Province of China
CityKaohsiung
Period12/4/1512/5/15

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Nogita, K., Mohd Salleh, M. A. A., Tran, X. Q., Read, J., Smith, S., & McDonald, S. D. (2016). Effects of trace phosphorus in Sn-Cu-Ni wave solder dross. In M. M. Al Bakri Abdullah, R. A. Razak, M. F. M. Tahir, M. M. Al Bakri Abdullah, R. A. Razak, & L. Jamaludin (Eds.), Advanced Materials Engineering and Technology IV (pp. 49-52). (Materials Science Forum; Vol. 857). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.857.49