A comparison of the corrosion behaviour of copper materials in dilute nitric acid

A comparison of the corrosion behaviour of copper materials in dilute nitric acid

The corrosion of a number of coarse- and fine-grained copper materials has been studied in an aerated aqueous nitric acid (100 mM) solution. The materials properties and the consequences of corrosion were characterized by scanning electron microscopy, electron back scatter diffraction and confocal l...

Full description

Saved in:
Bibliographic Details
Published in:Corrosion science Vol. 192; p. 109778
Main Authors: Dobkowska, Anna, Castillo, Millicent Dayle H., Turnbull, Joseph P., Ramamurthy, Sridhar, Zagidulin, Dmitrij, Moser, Desmond E., Behazin, Mehran, Keech, Peter G., Shoesmith, David W., Noël, James J.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier Ltd 01-11-2021
Elsevier BV
Subjects:
Acid corrosion
Aeration
Cold spraying
Copper
Corrosion
Corrosion rate
Crystallography
Electron backscatter diffraction
Grain boundaries
Material properties
Microscopy
Nitric acid
Scanning microscopy
SEM
SIMS
SEM
SIMS
Acid corrosion
Copper
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The corrosion of a number of coarse- and fine-grained copper materials has been studied in an aerated aqueous nitric acid (100 mM) solution. The materials properties and the consequences of corrosion were characterized by scanning electron microscopy, electron back scatter diffraction and confocal laser scanning microscopy. The corrosion of the coarse-grained materials was shown to be strongly influenced by the crystallographic orientations of grains. For fine-grained materials grain boundary etching at high angle grain boundaries and grain boundary pores (for cold sprayed copper) overrode the influences of texture on the corrosion rate. •Differences in corrosion behaviour of coarse and fine-grained Cu in HNO3 are shown.•Crystallographic orientation of grains dominates corrosion of coarse-grained Cu.•Anodic/cathodic ratio of HAGBs and grain interiors controls corrosion of fine Cu.•In cold spray Cu, corrosion propagated preferentially within particle boundaries.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2021.109778