Timeline for What metals aren't dissolved in/attacked by aqua regia?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| May 29, 2021 at 9:11 | history | edited | Nilay Ghosh | CC BY-SA 4.0 |
revisions
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| May 29, 2021 at 7:57 | history | edited | Nilay Ghosh | CC BY-SA 4.0 |
corrected reference
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| Apr 10, 2019 at 5:00 | comment | added | Stian | @owjburnham no need to argue that point, by definition it works exactly as h8y2Py says... 😁 | |
| Jan 28, 2017 at 13:45 | comment | added | owjburnham | Definitions that I can find online for "corrosion" all seem to reference "gradual destruction". So perhaps we could argue that it needs to be an ongoing process to constitute "corrosion". Coming at it from a more intuitive, empirical, chemist's perspective, I don't imagine that any of us would argue that oxygen in the air corrodes aluminium. It does react and, in the process, forms a protective oxide layer which prevents corrosion. But it feels wrong to describe that passivation step as a kind of 'corrosion'. | |
| Jan 28, 2017 at 8:53 | history | edited | Nilay Ghosh | CC BY-SA 3.0 |
updated answer
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| Jan 27, 2017 at 17:33 | comment | added | hBy2Py | @gsurfer04 Concur with this terminological point: if the reaction is self-terminating, it's passivation; otherwise, it's corrosion. | |
| Jan 27, 2017 at 16:40 | comment | added | gsurfer04 | I'd say corrosion necessarily includes the spalling of oxidised metal to expose more unreacted metal. Otherwise it's just passivation. | |
| Jan 27, 2017 at 16:09 | comment | added | paracetamol | @owj That's precisely what I had in mind. The formation of a silver chloride layer does appear to be a form of corrosion. | |
| Jan 27, 2017 at 16:05 | comment | added | owjburnham | Regarding "No [the Wikipedia article is not incorrect], silver actually forms a silver chloride layer that protects the metal from further attack", I rather took @paracresol's meaning to be that the formation of a protective chloride layer is, in itself, a form of corrosion (albeit minimal, and self-limiting). Perhaps p-cresol could confirm/deny/clarify? | |
| Jan 27, 2017 at 15:52 | vote | accept | paracetamol | ||
| Jan 27, 2017 at 16:06 | |||||
| Jan 27, 2017 at 15:33 | history | answered | Nilay Ghosh | CC BY-SA 3.0 |