Nickel welded with tin possible?
Nickel welded with tin possible?
(OP)
We have some broken nickel parts and we only see the possibility to weld them as an interim solution with tin as per an electronic procedure.
A visible inspection and electric continuity test show the solution adequate now but will this contact be reliable in time in terms of environmental corrosion (95% humidity with 55 ºC maximum and a 30 ppm SO2 concentration?)
Thanks to anyone that can help in advance.
A visible inspection and electric continuity test show the solution adequate now but will this contact be reliable in time in terms of environmental corrosion (95% humidity with 55 ºC maximum and a 30 ppm SO2 concentration?)
Thanks to anyone that can help in advance.





RE: Nickel welded with tin possible?
RE: Nickel welded with tin possible?
See NASA's 'Tin Whisker Homepage' at
http://nepp.nasa.gov/whisker/
Also, "...the corrosion [of tin] is greatly accelerated by the presence of SO2, NO, NO2, and H2S in the air.."
This source mentions coating tin with wax for protection from humidities greater than 50%.
http://sul2.stanford.edu/byform/mailing-lists/cdl/2001/0391.html
Finally, why did the original part fail?
RE: Nickel welded with tin possible?
Thanks sincerely both for your so valuable help.
RE: Nickel welded with tin possible?
RE: Nickel welded with tin possible?
Yes, I would probably spray with a clear polyurethane (for protection and to be able to see the metal surface) from an aerosl can. You might want to do a search for other sprays suitable for protecting electrical devices. E.g., boo1 recommended a corrosion prevention spray 'Nylock' in Thread307-61966.
RE: Nickel welded with tin possible?