CORROSION BEHAVIORS OF THE IRON-BASED AND Ni-BASED BRAZING FILLER METALS BRAZED ON THE STAINLESS STEELS IN A SOLUTION OF 3.5MASS% NaCl

Authors

  • Satoshi Sunada
  • Masahiko Hataheyama
  • Haruna Motoya
  • Norio Nunomura

Keywords:

corrosion rate, passivating film, polarization curve, stainless steel

Abstract

The corrosion resistance was studied electrochemically for an iron-based brazing filler metal F300 and a Ni-based brazing filler metal Ni613. Both austenitic stainless steel SUS316 and ferritic stainless steel SUS444 were used as base metals for these brazing filling metals. F300 showed a higher corrosion rate than those of Ni613 and both base metals and was less corrosion-resistive. While Ni613 showed a stronger depression effect of an anodic reaction than those of base metals, F300 showed little depression effect of the reaction. As an Fe-Ni phase dissolved preferentially in F300 and a finite laminated corrosive morphology was observed, the corrosion progression along a depth direction was suggested. These corrosion behaviors depend on the difference of chemical composition of these brazing filler metals.

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Published

2018-03-31

How to Cite

Sunada, S. ., Hataheyama, M. ., Motoya, H. ., & Nunomura, N. (2018). CORROSION BEHAVIORS OF THE IRON-BASED AND Ni-BASED BRAZING FILLER METALS BRAZED ON THE STAINLESS STEELS IN A SOLUTION OF 3.5MASS% NaCl. Acta Metallurgica Slovaca, 24(1), 88–99. Retrieved from https://journals.scicell.org/index.php/AMS/article/view/257