Electrochemical and corrosion study of as-cast NixAly intermetallic alloys: Influence of alloy composition and electrolyte pH

Journal article


Publication Details

Author(s): Sefer B, Virtanen S
Journal: Corrosion Science
Publication year: 2019
Volume: 150
Pages range: 127-135
ISSN: 0010-938X


Abstract

Electrochemical and corrosion behaviour of as-cast NixAly intermetallic alloys (Ni25Al75, Ni40Al60, Ni50Al50 and Ni75Al25 in at. %) is investigated and compared with commercially pure extruded/tempered Al and wrought Ni in pH 2, 6 and 12 buffered solutions. Different microstructures among the NixAly alloys are obtained, from single- to multi-phase systems. The electrochemical and corrosion behaviour of the NixAly intermetallic alloys is complex and depends on the Ni/Al-ratio, the microstructure, the pH value of the solution, and the passivation tendency. Three corrosion types are found to be operating, uniform corrosion, localised/pitting corrosion and intergranular corrosion, with pitting corrosion being the dominating type.


FAU Authors / FAU Editors

Sefer, Birhan, Ph.D.
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)
Virtanen, Sannakaisa Prof. Dr.
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)


How to cite

APA:
Sefer, B., & Virtanen, S. (2019). Electrochemical and corrosion study of as-cast NixAly intermetallic alloys: Influence of alloy composition and electrolyte pH. Corrosion Science, 150, 127-135. https://dx.doi.org/10.1016/j.corsci.2019.01.031

MLA:
Sefer, Birhan, and Sannakaisa Virtanen. "Electrochemical and corrosion study of as-cast NixAly intermetallic alloys: Influence of alloy composition and electrolyte pH." Corrosion Science 150 (2019): 127-135.

BibTeX: 

Last updated on 2019-22-07 at 07:34