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Application of galvanodynamic impedance spectroscopy for studying passive film cracking under mechanical strain

Abstract

The paper reports the results of simultaneous mechanical and electrochemical investigations on austenitic (18/8) stainless steel in a 2 % solution of sulphuric acid. The measurements were performed using Galvanodynamic Electrochemical Impedance Spectroscopy (GDEIS). Electrochemical analysis of mechanical passive layer cracking and repassivation conditions during a tensile test was carried out. Application of this methodology allowed monitoring of the natural corrosion process without external current (IDC = 0A) nor potential perturbation of the system. The results proved the usefulness of measurements of actual electrochemical systems at zero external current conditions. It was found that a transition to an active state occurred for relatively high strain rates, while the passive layer cracking process did not depend on the strain rate.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
ELECTROCHIMICA ACTA no. 469,
ISSN: 0013-4686
Language:
English
Publication year:
2023
Bibliographic description:
Orlikowski J., Jurak K., Darowicki K., Szociński M., Karólkowska A., Wysmułek S., Kalinowski M.: Application of galvanodynamic impedance spectroscopy for studying passive film cracking under mechanical strain// ELECTROCHIMICA ACTA -Vol. 469, (2023), s.143252-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.electacta.2023.143252
Sources of funding:
  • COST_FREE
Verified by:
Gdańsk University of Technology

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