Characterisation by X-ray absorption near-edge spectroscopy of KMnO4-based no-rinse conversion coatings on Al and Al alloys
Source abstract
Abstract
Abstract No-rinse conversion coatings based on KMnO4, were applied to aluminium alloys and pure aluminium, and examined with X-ray absorption near edge spectroscopy (XANES). Some specimens were prepared beforehand and other specimens were freshly prepared immediately before testing, so that early changes in the coatings could be studied. A significant difference in composition was found between the one-week old specimens and the fresh. The old specimens consisted predominantly of Mn oxides, while the fresh specimens contained a substantial proportion of KMnO4. When fresh specimens were rinsed with de-ionised water, soluble KMnO4 was removed and the spectrum now showed evidence for mixed oxides, but no KMnO4, like the older specimens. Monitoring of specimens after exposure to 0.5% NaCl solution showed little further change in the film.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Electron and X-Ray Spectroscopy Techniques · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (11)
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