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Effect of externally added molybdate on repassivation and stress corrosion cracking of type 304 stainless steel in hydrochloric acid

DSpace at IIT Bombay

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Title Effect of externally added molybdate on repassivation and stress corrosion cracking of type 304 stainless steel in hydrochloric acid
 
Creator DEVASENAPATHI, A
RAJA, VS
 
Subject film modified microelectrodes
molybdenum
inhibition
kinetics
behavior
aluminum
ions
anodic dissolution
electron spectroscopy
films and film formation
molybdate
molybdenum
repassivation
scratching electrode technique
stress corrosion cracking
transgranular cracking
type 304 stainless steel
 
Description The effect of externally added molybdate (MoO42-) on the repassivation and SCC behavior of type 304 (UNS S30400) stainless steel (SS) was investigated in 1 M hydrochloric acid (HCl) at open-circuit potential (OCP). With the addition of MoO42-, the time to failure initially decreased hut then gradually increased. From studies using potential-vs-time data, the scratching electrode technique, and electron spectroscopy for chemical analysis (ESCA), the initial decrease in the time to failure at lower MoO42- concentrations was attributed to an increase in the cathodic reaction rate and a consequent increase in anodic dissolution. The increase in the time to failure at higher MoO42- concentrations was attributed to the reduction in anodic dissolution with a strong tendency for MoO42- deposition on the bare metal surface.
 
Publisher NATL ASSN CORROSION ENG
 
Date 2011-08-19T01:27:34Z
2011-12-26T12:55:59Z
2011-12-27T05:43:51Z
2011-08-19T01:27:34Z
2011-12-26T12:55:59Z
2011-12-27T05:43:51Z
1996
 
Type Article
 
Identifier CORROSION, 52(4), 243-249
0010-9312
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10181
http://hdl.handle.net/10054/10181
 
Language en