Effect of Mixed Salts on Atmospheric Corrosion of 304 Stainless Steel

LY Guo; N Mi; H Mohammed-Ali; M Ghahari; A Du Plessis; A Cook; S Street; C Reinhard; R. C. Atwood; T Rayment; AJ Davenport

doi:10.1149/2.0021911jes

Effect of Mixed Salts on Atmospheric Corrosion of 304 Stainless Steel

LY Guo, N Mi, H Mohammed-Ali, M Ghahari, A Du Plessis, A Cook, S Street, C Reinhard, R. C. Atwood, T Rayment, AJ Davenport

Diamond Light Source Ltd

Research output: Contribution to journal › Article › peer-review

Abstract

Atmospheric corrosion of stainless steel can take place when airborne salt particles deposit on the metal surface, forming droplets when the relative humidity (RH) reaches a critical value: the deliquescence relative humidity of the salt. Most work to date has focused on single salts such as MgCl₂ or NaCl. In the present work, the effect of mixed salts is investigated at 45% RH, above the deliquescence relative humidity of MgCl₂ but below that of NaCl. Dish-shaped pits were found in pure MgCl₂ solutions and mixed solutions. Crevice corrosion takes place under NaCl crystals. This is shown both with ex situ measurements and in situ time-dependent measurements using X-ray microtomography, where pit growth was also monitored.

Original language	English
Pages (from-to)	C3010-C3014
Number of pages	5
Journal	Journal of the Electrochemical Society
Volume	166
Issue number	11
DOIs	https://doi.org/10.1149/2.0021911jes
Publication status	Published - 9 Jan 2019
Externally published	Yes

Access to Document

10.1149/2.0021911jes

Cite this

@article{3f475fae46414893bf09da8327a3c009,

title = "Effect of Mixed Salts on Atmospheric Corrosion of 304 Stainless Steel",

abstract = "Atmospheric corrosion of stainless steel can take place when airborne salt particles deposit on the metal surface, forming droplets when the relative humidity (RH) reaches a critical value: the deliquescence relative humidity of the salt. Most work to date has focused on single salts such as MgCl2 or NaCl. In the present work, the effect of mixed salts is investigated at 45% RH, above the deliquescence relative humidity of MgCl2 but below that of NaCl. Dish-shaped pits were found in pure MgCl2 solutions and mixed solutions. Crevice corrosion takes place under NaCl crystals. This is shown both with ex situ measurements and in situ time-dependent measurements using X-ray microtomography, where pit growth was also monitored.",

author = "LY Guo and N Mi and H Mohammed-Ali and M Ghahari and {Du Plessis}, A and A Cook and S Street and C Reinhard and Atwood, {R. C.} and T Rayment and AJ Davenport",

year = "2019",

month = jan,

day = "9",

doi = "10.1149/2.0021911jes",

language = "English",

volume = "166",

pages = "C3010--C3014",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "IOP Publishing Ltd",

number = "11",

}

TY - JOUR

T1 - Effect of Mixed Salts on Atmospheric Corrosion of 304 Stainless Steel

AU - Guo, LY

AU - Mi, N

AU - Mohammed-Ali, H

AU - Ghahari, M

AU - Du Plessis, A

AU - Cook, A

AU - Street, S

AU - Reinhard, C

AU - Atwood, R. C.

AU - Rayment, T

AU - Davenport, AJ

PY - 2019/1/9

Y1 - 2019/1/9

N2 - Atmospheric corrosion of stainless steel can take place when airborne salt particles deposit on the metal surface, forming droplets when the relative humidity (RH) reaches a critical value: the deliquescence relative humidity of the salt. Most work to date has focused on single salts such as MgCl2 or NaCl. In the present work, the effect of mixed salts is investigated at 45% RH, above the deliquescence relative humidity of MgCl2 but below that of NaCl. Dish-shaped pits were found in pure MgCl2 solutions and mixed solutions. Crevice corrosion takes place under NaCl crystals. This is shown both with ex situ measurements and in situ time-dependent measurements using X-ray microtomography, where pit growth was also monitored.

AB - Atmospheric corrosion of stainless steel can take place when airborne salt particles deposit on the metal surface, forming droplets when the relative humidity (RH) reaches a critical value: the deliquescence relative humidity of the salt. Most work to date has focused on single salts such as MgCl2 or NaCl. In the present work, the effect of mixed salts is investigated at 45% RH, above the deliquescence relative humidity of MgCl2 but below that of NaCl. Dish-shaped pits were found in pure MgCl2 solutions and mixed solutions. Crevice corrosion takes place under NaCl crystals. This is shown both with ex situ measurements and in situ time-dependent measurements using X-ray microtomography, where pit growth was also monitored.

UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_starter&SrcAuth=WosAPI&KeyUT=WOS:000455351400001&DestLinkType=FullRecord&DestApp=WOS

U2 - 10.1149/2.0021911jes

DO - 10.1149/2.0021911jes

M3 - Article

SN - 0013-4651

VL - 166

SP - C3010-C3014

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 11

ER -

Effect of Mixed Salts on Atmospheric Corrosion of 304 Stainless Steel

Abstract

Access to Document

Other files and links

Fingerprint

Cite this