Evaluation of pitting corrosion by dynamic speckle pattern analysis

There is an increasing interest in non-destructive and real-time high-resolution approaches for corrosion studies in metals. In this paper, we propose the dynamic speckle pattern method as a low-cost, easy-to-implement, and quasi in-situ optical technique for the quantitative evaluation of pitting c...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2023-05, Vol.13 (1), p.8549-8549, Article 8549
Main Authors: Pedram, Omid, Jamali, Ramin, Abbasian, Vahid, Rad, Vahideh Farzam, Darafsheh, Arash, Khamedi, Ramin, Poursaeidi, Esmaeil, Moradi, Ali-Reza
Format: Article
Language:English
Subjects:
639/166/988
639/624/1107/510
Corrosion
Digital cameras
Electrodes
Humanities and Social Sciences
Interferometry
Lasers
Light
Mechanical engineering
Metals
Microscopy
multidisciplinary
Science
Science (multidisciplinary)
Sodium chloride
Stainless steel
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:There is an increasing interest in non-destructive and real-time high-resolution approaches for corrosion studies in metals. In this paper, we propose the dynamic speckle pattern method as a low-cost, easy-to-implement, and quasi in-situ optical technique for the quantitative evaluation of pitting corrosion. This type of corrosion occurs in a specific area of a metallic structure and causes holes formation leading to structural failure. A Custom 450 stainless steel sample, placed in 3.5 wt% NaCl solution and applied to a 350 mV SCE potential to initiate the corrosion, is used as the sample. The speckle patterns formed by the scattering of a He-Ne laser light is changed over time due to any corrosion in the sample. The analysis of the time-integrate speckle pattern suggests that the growth rate of pitting decreases with time.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-35559-w