The effect of deposition conditions on atmospheric pitting corrosion location under Evans droplets on 304L stainless steel

Steven Street; Angus Cook; Haval Mohammed Ali; Trevor Rayment; Alison Davenport

doi:10.5006/2614

The effect of deposition conditions on atmospheric pitting corrosion location under Evans droplets on 304L stainless steel

Steven Street, Angus Cook, Haval Mohammed Ali, Trevor Rayment, Alison Davenport

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

4 Citations (Scopus)

273 Downloads (Pure)

Abstract

Pit location during atmospheric corrosion of 304L stainless steel under MgCl₂ droplets depends on initial droplet concentration. Pits formed predominantly in the center of the droplet for concentrations ≥ 4 M, closer to the perimeter for 1.5-3 M, and were randomly distributed for concentrations ≤ 1 M. Pits initiated only after the droplets had evaporated to a critical concentration > 3 M, where droplets deposited with lower initial concentrations were thinner. The results can be explained in terms of “differential aeration” and IR drop effects, showing that corrosion in “splash zones” may differ from that under aerosol salt deposit layers that deliquesce forming initially saturated solutions.

Original language	English
Journal	Corrosion
Early online date	30 Nov 2017
DOIs	https://doi.org/10.5006/2614
Publication status	E-pub ahead of print - 30 Nov 2017

Keywords

Stainless Steel
Atmospheric environments
differential aeration cell
localized corrosion
relative humidity
open-circuit potential

ASJC Scopus subject areas

Materials Science (miscellaneous)
Electrochemistry
Metals and Alloys

Access to Document

10.5006/2614Licence: None: All rights reserved

Street_et_al_The_effect_of_deposition_conditions_Corrosion_2017Accepted author manuscript, 1.73 MBLicence: None: All rights reserved

http://corrosionjournal.org/doi/10.5006/2614?code=nace-prem-siteLicence: None: All rights reserved

Cite this

@article{480e070628df40d596fb2e0dc9b91539,

title = "The effect of deposition conditions on atmospheric pitting corrosion location under Evans droplets on 304L stainless steel",

abstract = "Pit location during atmospheric corrosion of 304L stainless steel under MgCl2 droplets depends on initial droplet concentration. Pits formed predominantly in the center of the droplet for concentrations ≥ 4 M, closer to the perimeter for 1.5-3 M, and were randomly distributed for concentrations ≤ 1 M. Pits initiated only after the droplets had evaporated to a critical concentration > 3 M, where droplets deposited with lower initial concentrations were thinner. The results can be explained in terms of “differential aeration” and IR drop effects, showing that corrosion in “splash zones” may differ from that under aerosol salt deposit layers that deliquesce forming initially saturated solutions.",

keywords = "Stainless Steel, Atmospheric environments, differential aeration cell, localized corrosion , relative humidity, open-circuit potential",

author = "Steven Street and Angus Cook and {Mohammed Ali}, Haval and Trevor Rayment and Alison Davenport",

year = "2017",

month = nov,

day = "30",

doi = "10.5006/2614",

language = "English",

journal = "Corrosion",

issn = "0010-9312",

publisher = "National Association of Corrosion Engineers",

}

TY - JOUR

T1 - The effect of deposition conditions on atmospheric pitting corrosion location under Evans droplets on 304L stainless steel

AU - Street, Steven

AU - Cook, Angus

AU - Mohammed Ali, Haval

AU - Rayment, Trevor

AU - Davenport, Alison

PY - 2017/11/30

Y1 - 2017/11/30

N2 - Pit location during atmospheric corrosion of 304L stainless steel under MgCl2 droplets depends on initial droplet concentration. Pits formed predominantly in the center of the droplet for concentrations ≥ 4 M, closer to the perimeter for 1.5-3 M, and were randomly distributed for concentrations ≤ 1 M. Pits initiated only after the droplets had evaporated to a critical concentration > 3 M, where droplets deposited with lower initial concentrations were thinner. The results can be explained in terms of “differential aeration” and IR drop effects, showing that corrosion in “splash zones” may differ from that under aerosol salt deposit layers that deliquesce forming initially saturated solutions.

AB - Pit location during atmospheric corrosion of 304L stainless steel under MgCl2 droplets depends on initial droplet concentration. Pits formed predominantly in the center of the droplet for concentrations ≥ 4 M, closer to the perimeter for 1.5-3 M, and were randomly distributed for concentrations ≤ 1 M. Pits initiated only after the droplets had evaporated to a critical concentration > 3 M, where droplets deposited with lower initial concentrations were thinner. The results can be explained in terms of “differential aeration” and IR drop effects, showing that corrosion in “splash zones” may differ from that under aerosol salt deposit layers that deliquesce forming initially saturated solutions.

KW - Stainless Steel

KW - Atmospheric environments

KW - differential aeration cell

KW - localized corrosion

KW - relative humidity

KW - open-circuit potential

U2 - 10.5006/2614

DO - 10.5006/2614

M3 - Article

SN - 0010-9312

JO - Corrosion

JF - Corrosion

ER -

The effect of deposition conditions on atmospheric pitting corrosion location under Evans droplets on 304L stainless steel

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this