In:
Journal of Microscopy, Wiley, Vol. 267, No. 1 ( 2017-07), p. 98-106
Abstract:
Time lapse x‐ray computed tomography enables the collection of sequences of 3‐D images. Few experiments have been carried out to date at submicrometre resolutions. Here we use an in situ cell to study the environmentally induced changes of two materials exposed to saline conditions. The first is a primer coating used to protect metal materials and the other is an aluminium alloy used in airplane (AA2099 aluminium alloy). For the primer coating, we followed the release of corrosion inhibitor (strontium aluminium polyphosphate) nanoparticles for 14 days. Using phase contrast imaging we were able to discern the inhibitor particle morphologies whereas attenuation contrast distinguished strontium‐ and aluminium‐rich particles. We found that the strontium‐rich particles dissolved rapidly whereas the aluminium‐rich components were more resistant to dissolution. In the case of aluminium aerospace alloy, we tracked the progress of intergranular corrosion being driven by the presence of copper‐rich phases at the grain boundaries of the alloy. This was then followed by the rapid corrosion of particular grains.
Type of Medium:
Online Resource
ISSN:
0022-2720
,
1365-2818
DOI:
10.1111/jmi.2017.267.issue-1
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2007259-4
SSG:
11
SSG:
12
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