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

Sefer B, Virtanen S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Corrosion Science Elsevier

Book Volume: 150

Pages Range: 127-135

DOI: 10.1016/j.corsci.2019.01.031

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.

Authors with CRIS profile

Birhan Sefer Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Sannakaisa Virtanen 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: Download