Synchrotron X-ray radiography studies of pitting corrosion of stainless steel: Extraction of pit propagation parameters

Seyed Ghahari, Donal Krouse, Nicholas Laycock, Trevor Rayment, Cristiano Padovani, Marco Stampanoni, Federica Marone, Rajmund Mokso, Alison J. Davenport

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)
133 Downloads (Pure)

Abstract

In situ synchrotron X-ray radiography was used to observe the evolution of 2D pits growing at the edge of stainless steel foils in chloride solutions of varying concentrations under current and potential control. A method was developed for measuring the local anodic current density along the perimeter of pits from the rate of advance of the pit into the metal. Pit depth tends to increase with time with kinetics consistent with diffusion control (under a salt layer), whereas lateral development (on film-free surfaces) is influenced by solution conductivity. Perforated covers formed on pits control their growth and stability.
Original languageEnglish
Pages (from-to)23-35
JournalCorrosion Science
Volume100
Early online date21 Jul 2015
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Dive into the research topics of 'Synchrotron X-ray radiography studies of pitting corrosion of stainless steel: Extraction of pit propagation parameters'. Together they form a unique fingerprint.

Cite this