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Effect of KMnO4 on the HCl-based Pickling Process of 430 Stainless Steel

Authors
Qiong Xie, Peiyang Shi, Chengjun Liu, Maofa Jiang
Corresponding Author
Qiong Xie
Available Online July 2015.
DOI
10.2991/lemcs-15.2015.20How to use a DOI?
Keywords
Potassium hypermanganate (KMnO4); 430 Stainless steel; HCl-based pickling; Polarization curves; EIS
Abstract

The effect of potassium hypermanganate (KMnO4) as an oxidant on pickling behavior in HCl-based electrolyte and the surface quality of original hot-rolled and blasted 430 stainless steel (430-SS) plate are studied using weight-loss tests, microstructure analyses (scanning electron microscope and laser scanning microscope), potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) measurements. The results showed significantly accelerated pickling process for 430-SS by adding KMnO4 through enhanced cathodic reaction rate and reduced charge-transfer resistance (Rt). The weight loss rate of 430-SS is 83.6% higher under the condition of 1wt% KMnO4 than that without oxidant, which grows an enormous 2.33 times with KMnO4 content of 2wt%. The 430-SS plate is left as a total clean one without any oxide layers left or any kind of local corrosion, when 1.5wt% KMnO4 is added. KMnO4 can be confirmed as an appropriate oxidant when many factors such as accelerating the pickling process in the process of the pickling, improving the 430-SS’ surface quality, solution recycling possibility and environment protection are considered as a whole.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
Series
Advances in Intelligent Systems Research
Publication Date
July 2015
ISBN
10.2991/lemcs-15.2015.20
ISSN
1951-6851
DOI
10.2991/lemcs-15.2015.20How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Qiong Xie
AU  - Peiyang Shi
AU  - Chengjun Liu
AU  - Maofa Jiang
PY  - 2015/07
DA  - 2015/07
TI  - Effect of KMnO4 on the HCl-based Pickling Process of 430 Stainless Steel
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 102
EP  - 106
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.20
DO  - 10.2991/lemcs-15.2015.20
ID  - Xie2015/07
ER  -