Effect of Zr and ZrO2 on aqueous corrosion behaviour of oxide dispersion strengthened 9Cr ferritic-martensitic steels

Kaushik, G. Nischay and Nagini, M. and Reddy, M. Surya Prakash and Hebalkar, Neha Y. and Vijay, R. and Murty, B S (2022) Effect of Zr and ZrO2 on aqueous corrosion behaviour of oxide dispersion strengthened 9Cr ferritic-martensitic steels. Materials Letters, 324. pp. 1-4. ISSN 0167-577X

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Abstract

The effect of Zr and ZrO2 on corrosion behaviour and passive film characteristics of the oxide dispersion strengthened (ODS) steels with 9%Cr (ODS9Cr-Zr and ODS9Cr-ZrO2) and those without the addition of oxide dispersions (NODS) has been studied in 0.6 M NaCl solution using cyclic polarization and electrochemical impedance spectroscopy measurements. Electrochemical corrosion studies indicated that Zr and ZrO2 addition increases the corrosion resistance of ODS9Cr steels, with the best results obtained for ODS9Cr-ZrO2 steel. The better corrosion behaviour of ODS9Cr steels is due to its surface morphology and Cr2O3 enriched passive film. Dispersion of Zr and ZrO2 along with Y2O3 in 9Cr steel considerably improved the corrosion resistance further. © 2022

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IITH Creators:	IITH Creators ORCiD Murty, B S https://orcid.org/0000-0002-4399-8531
Item Type:	Article
Uncontrolled Keywords:	Corrosion; Microstructure; Nanocrystalline materials
Subjects:	Materials Engineering > Materials engineering
Divisions:	Department of Material Science Engineering
Depositing User:	. LibTrainee 2021
Date Deposited:	12 Oct 2022 10:15
Last Modified:	12 Oct 2022 10:15
URI:	http://raiithold.iith.ac.in/id/eprint/10902
Publisher URL:	http://doi.org/10.1016/j.matlet.2022.132428
OA policy:	https://v2.sherpa.ac.uk/id/publication/13701
Related URLs:	Author Google Scholar

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