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Electrodissolution of 304 stainless steel in neutral electrolytes for surface decontamination applications

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Title Electrodissolution of 304 stainless steel in neutral electrolytes for surface decontamination applications
 
Creator NEERGAT, M
WEISBROD, KR
 
Subject HIGH-CURRENT DENSITIES
HIGH-RATE DISSOLUTION
316L STAINLESS-STEEL
CLOSED-CELL SYSTEM
ANODIC-DISSOLUTION
MASS-TRANSPORT
SULFURIC-ACID
TRANSPASSIVE DISSOLUTION
CORROSION-RESISTANCE
FUNDAMENTAL-ASPECTS
Stainless steel
XPS
Anodic dissolution
Anodic films
Selective oxidation
Segregation
 
Description Brightening of 304 stainless steel in concentrated electrolytes of Na(2)SO(4), Li(2)SO(4), NaNO(3), LiNO(3), NH(4)NO(3), and Ca(NO(3))(2) was studied. It is observed that the current efficiency and quality of the surface depend on the electrolyte concentration, ions present in the electrolyte and the operating current density. While sulfate electrolytes etch the electrodes, oxidizing electrolytes generally yield brightened surfaces. Surface brightening is achieved at the lowest current density in LiNO(3)/Na(2)Cr(2)O(7) composite electrolyte at a pH of 5.2. The results are explained on the basis of salt film formation near the specimen surface. (C) 2011 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2012-06-26T06:35:21Z
2012-06-26T06:35:21Z
2011
 
Type Article
 
Identifier CORROSION SCIENCE,53(12)3983-3990
0010-938X
http://dx.doi.org/10.1016/j.corsci.2011.08.001
http://dspace.library.iitb.ac.in/jspui/handle/100/14051
 
Language English