Morphological estimation of pitting corrosion on vertically positioned 304 stainless steel using acoustic-emission duration parameter

Kaige Wu; Jai Won Byeon

doi:10.1016/j.corsci.2018.12.031

Morphological estimation of pitting corrosion on vertically positioned 304 stainless steel using acoustic-emission duration parameter

Kaige Wu, Jai Won Byeon

Dept. of Mechanical Convergence Engineering

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

50 Scopus citations

Abstract

A morphological estimation of the pitting corrosion of type 304 stainless steel using the acoustic emission (AE) duration parameter is proposed in the present work. The pit morphology depending on Cl⁻ concentration and gravity was investigated. Occluded pits in low-concentration NaCl solution were observed to develop with more long-duration AEs, while elongated pits with ruptured cover in high-concentration NaCl solution were predominantly concurrent with short-duration AEs. The morphological descriptor “η” derived from the AE duration–amplitude plots reflected the morphological transition from occluded to elongated open pits. An AE-based correspondence among the environmental factors and corrosion morphologies was proposed.

Original language	English
Pages (from-to)	331-337
Number of pages	7
Journal	Corrosion Science
Volume	148
DOIs	https://doi.org/10.1016/j.corsci.2018.12.031
State	Published - Mar 2019

Keywords

A. Stainless steel
Acoustic emission
B. Polarization
B. SEM
C. Pitting corrosion

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10.1016/j.corsci.2018.12.031

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title = "Morphological estimation of pitting corrosion on vertically positioned 304 stainless steel using acoustic-emission duration parameter",

abstract = "A morphological estimation of the pitting corrosion of type 304 stainless steel using the acoustic emission (AE) duration parameter is proposed in the present work. The pit morphology depending on Cl− concentration and gravity was investigated. Occluded pits in low-concentration NaCl solution were observed to develop with more long-duration AEs, while elongated pits with ruptured cover in high-concentration NaCl solution were predominantly concurrent with short-duration AEs. The morphological descriptor “η” derived from the AE duration–amplitude plots reflected the morphological transition from occluded to elongated open pits. An AE-based correspondence among the environmental factors and corrosion morphologies was proposed.",

keywords = "A. Stainless steel, Acoustic emission, B. Polarization, B. SEM, C. Pitting corrosion",

author = "Kaige Wu and Byeon, {Jai Won}",

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year = "2019",

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AU - Wu, Kaige

AU - Byeon, Jai Won

PY - 2019/3

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N2 - A morphological estimation of the pitting corrosion of type 304 stainless steel using the acoustic emission (AE) duration parameter is proposed in the present work. The pit morphology depending on Cl− concentration and gravity was investigated. Occluded pits in low-concentration NaCl solution were observed to develop with more long-duration AEs, while elongated pits with ruptured cover in high-concentration NaCl solution were predominantly concurrent with short-duration AEs. The morphological descriptor “η” derived from the AE duration–amplitude plots reflected the morphological transition from occluded to elongated open pits. An AE-based correspondence among the environmental factors and corrosion morphologies was proposed.

AB - A morphological estimation of the pitting corrosion of type 304 stainless steel using the acoustic emission (AE) duration parameter is proposed in the present work. The pit morphology depending on Cl− concentration and gravity was investigated. Occluded pits in low-concentration NaCl solution were observed to develop with more long-duration AEs, while elongated pits with ruptured cover in high-concentration NaCl solution were predominantly concurrent with short-duration AEs. The morphological descriptor “η” derived from the AE duration–amplitude plots reflected the morphological transition from occluded to elongated open pits. An AE-based correspondence among the environmental factors and corrosion morphologies was proposed.

KW - A. Stainless steel

KW - Acoustic emission

KW - B. Polarization

KW - B. SEM

KW - C. Pitting corrosion

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DO - 10.1016/j.corsci.2018.12.031

M3 - Article

AN - SCOPUS:85059199899

SN - 0010-938X

VL - 148

SP - 331

EP - 337

JO - Corrosion Science

JF - Corrosion Science

ER -

Morphological estimation of pitting corrosion on vertically positioned 304 stainless steel using acoustic-emission duration parameter

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Keywords

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