Direct observation of pitting corrosion evolutions on carbon steel surfaces at the nano-to-micro- scales.

ABSTRACT: The Cl^--induced corrosion of metals and alloys is of relevance to a wide range of engineered materials, structures, and systems. Because of the challenges in studying pitting corrosion in a quantitative and statistically significant manner, its kinetics remain poorly understood. Herein, by direct, nano- to micro-scale observations using vertical scanning interferometry (VSI), we examine the temporal evolution of pitting corrosion on AISI 1045 carbon steel over large surface areas in Cl^--free, and Cl^--enriched solutions. Special focus is paid to examine the nucleation and growth of pits, and the associated formation of roughened regions on steel surfaces. By statistical analysis of hundreds of individual pits, three stages of pitting corrosion, namely, induc

SUBMITTER: Guo P 

PROVIDER: S-EPMC5964123 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature