Effect of boron addition on pitting corrosion resistance of modified 9Cr-1Mo steel: Application of electrochemical noise

M. G. Pujar; C. R.  Das; S. Thirunavukkarasu; U. Kamachi Mudali; A. K. Bhaduri; J. Brijitta; B. V. R. Tata

doi:10.1016/j.matchemphys.2011.07.036

Effect of boron addition on pitting corrosion resistance of modified 9Cr-1Mo steel: Application of electrochemical noise

M. G. Pujar, C. R. Das, S. Thirunavukkarasu, U. Kamachi Mudali, A. K. Bhaduri, J. Brijitta, B. V. R. Tata

Indira Gandhi Centre for Atomic Research

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

9Cr-1Mo steels indigenously melted with the addition of boron (Alloy B) and without it (Alloy D) along with Alloy C (without boron addition with minor changes in the trace element concentrations) were studied for their pitting corrosion resistance in 0.001 M, 0.01 M, 0.05 M and 0.1 M sodium chloride solutions using electrochemical noise (EN) technique. Weibull probability plots were used to determine the pit embryo generation rates. Gumbel extreme value analysis was conducted to determine the maximum metastable as well as stable pit radii. The analysis of the data showed superior pitting corrosion resistance of the Alloy B compared to Alloy C as well as Alloy D. (C) 2011 Elsevier B.V. All rights reserved.

Original language	English
Journal	Materials Chemistry and Physics
Volume	130
Issue number	1-2
Pages (from-to)	536-547
ISSN	0254-0584
DOIs	https://doi.org/10.1016/j.matchemphys.2011.07.036
Publication status	Published - 2011
Externally published	Yes

Keywords

9Cr-1Mo
Boron
C. electrochemical techniques
D. corrosion
Electrochemical noise
Electron microscopy
Microstructure
Pitting corrosion

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10.1016/j.matchemphys.2011.07.036

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@article{67a93be3265b424ab0339d9e0a70d770,

title = "Effect of boron addition on pitting corrosion resistance of modified 9Cr-1Mo steel: Application of electrochemical noise",

abstract = "9Cr-1Mo steels indigenously melted with the addition of boron (Alloy B) and without it (Alloy D) along with Alloy C (without boron addition with minor changes in the trace element concentrations) were studied for their pitting corrosion resistance in 0.001 M, 0.01 M, 0.05 M and 0.1 M sodium chloride solutions using electrochemical noise (EN) technique. Weibull probability plots were used to determine the pit embryo generation rates. Gumbel extreme value analysis was conducted to determine the maximum metastable as well as stable pit radii. The analysis of the data showed superior pitting corrosion resistance of the Alloy B compared to Alloy C as well as Alloy D. (C) 2011 Elsevier B.V. All rights reserved.",

keywords = "9Cr-1Mo, Boron, C. electrochemical techniques, D. corrosion, Electrochemical noise, Electron microscopy, Microstructure, Pitting corrosion",

author = "Pujar, {M. G.} and Das, {C. R.} and S. Thirunavukkarasu and Mudali, {U. Kamachi} and Bhaduri, {A. K.} and J. Brijitta and Tata, {B. V. R.}",

year = "2011",

doi = "10.1016/j.matchemphys.2011.07.036",

language = "English",

volume = "130",

pages = "536--547",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Effect of boron addition on pitting corrosion resistance of modified 9Cr-1Mo steel: Application of electrochemical noise

AU - Pujar, M. G.

AU - Das, C. R.

AU - Thirunavukkarasu, S.

AU - Mudali, U. Kamachi

AU - Bhaduri, A. K.

AU - Brijitta, J.

AU - Tata, B. V. R.

PY - 2011

Y1 - 2011

N2 - 9Cr-1Mo steels indigenously melted with the addition of boron (Alloy B) and without it (Alloy D) along with Alloy C (without boron addition with minor changes in the trace element concentrations) were studied for their pitting corrosion resistance in 0.001 M, 0.01 M, 0.05 M and 0.1 M sodium chloride solutions using electrochemical noise (EN) technique. Weibull probability plots were used to determine the pit embryo generation rates. Gumbel extreme value analysis was conducted to determine the maximum metastable as well as stable pit radii. The analysis of the data showed superior pitting corrosion resistance of the Alloy B compared to Alloy C as well as Alloy D. (C) 2011 Elsevier B.V. All rights reserved.

AB - 9Cr-1Mo steels indigenously melted with the addition of boron (Alloy B) and without it (Alloy D) along with Alloy C (without boron addition with minor changes in the trace element concentrations) were studied for their pitting corrosion resistance in 0.001 M, 0.01 M, 0.05 M and 0.1 M sodium chloride solutions using electrochemical noise (EN) technique. Weibull probability plots were used to determine the pit embryo generation rates. Gumbel extreme value analysis was conducted to determine the maximum metastable as well as stable pit radii. The analysis of the data showed superior pitting corrosion resistance of the Alloy B compared to Alloy C as well as Alloy D. (C) 2011 Elsevier B.V. All rights reserved.

KW - 9Cr-1Mo

KW - Boron

KW - C. electrochemical techniques

KW - D. corrosion

KW - Electrochemical noise

KW - Electron microscopy

KW - Microstructure

KW - Pitting corrosion

U2 - 10.1016/j.matchemphys.2011.07.036

DO - 10.1016/j.matchemphys.2011.07.036

M3 - Journal article

SN - 0254-0584

VL - 130

SP - 536

EP - 547

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Effect of boron addition on pitting corrosion resistance of modified 9Cr-1Mo steel: Application of electrochemical noise

Abstract

Keywords

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