Development of Nitrided Selective Wave Soldering Tool with Enhanced Lifetime for the Automotive Industry
The aim of our research is to develop an economic material combination exhibiting good wetting with solder alloy melts and enhanced lifetime against erosion in lead-free soldering applications. Iron-nitrides have strong bonds compared to metals, therefore they are expected to have increased resistance against erosion in solder melts compared to iron soldering tools. The first step of our research is to find the proper substrate material for nitride coating to obtain the desired wetting behaviour. The present paper focuses on the substrate material selection through wetting examinations of nitrided W302, 42CrMo4 and C45 steels with SAC 305 solder alloy melt. It was found that the substrate composition strongly affects the wetting contact angle. The best wetting was achieved with the C45 type steel substrate. The correlation between substrate composition, compounds formed during nitriding and wetting behaviour is discussed.
KeywordsContact Angle Solder Alloy Nitriding Process Equilibrium Contact Angle Nitride Coating
The authors are grateful for Tibor Kulcsar for the GD-OES examinations. The described article was carried out as part of the EFOP-3.6.1-16-00011 “Younger and Renewing University—Innovative Knowledge City—institutional development of the University of Miskolc aiming at intelligent specialisation” project implemented in the framework of the Szechenyi 2020 program. The realization of this project is supported by the European Union, co-financed by the European Social Fund. Marton Benke was further supported by the Postdoctral Researcher Fellowship of the Hungarian Academy of Sciences and Peter Baumli by the Janos Bolyai Research Fellowship of the Hungarian Academy of Sciences.
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