Questions tagged [corrosion]
For questions about the process of corrosion or protection of metals from corrosion.
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Is an alcohol-based spray cleaner ok for cleaning an aluminum heat exchanger?
Simple alcohols such as ethanol can, apparently, corrode aluminum. However, this corrosion reaction seems to be very slow at room temperature and below. Is an ethanol based, non-foaming spray cleaner, ...
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Can ZnO act as a reducing agent for noble metals like Pd?
Palladium ions (e.g., $\ce{Pd^2+}$) can be reduced to $\ce{Pd}$ by more reactive metals such as zinc. Metal oxides such as $\ce{ZnO}$ are very stable but can its atoms in the oxide structure still be ...
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nickel-copper fabric: shielding viability after being subjected to weathering
I know the solution can be as simple as a well-sealed garbage can, but I am contemplating making a more malleable fabric based faraday-cage-esque contraption. The plan is to use nickle-copper fabric ...
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Choosing electrodes for corrosive environments
Background
I'm building a watering robot for my household plants. For the purpose of measuring the moisture content of the plant I intend to use a resisitive approach where I pass an electric current ...
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How come when it rusts iron can undergo oxidation without the prescence of a another metal to undergo reduction?
It seems to me rusting is an electrochemical process where oxygen, which has particularly high electronegativity, fills the role of cathode or is that an incorrect way to put it?
user60471
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Agar gel vs aqueous solution
Can someone tell me why - in experiments to observe corrosion of iron nails - we often use a preparation of agar gel (with $\ce{NaCl}$, phenolphthalein, etc.) instead of an aqueous solution?
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Can hydrofluoric acid etch glass at a pH of 7.0?
Will it still etch glass when very dilute? Will the reaction still proceed slowly? At what pH will the reaction stop completely?
From Wikipedia on hydrogen fluoride: "Although hydrofluoric acid ...
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Will an alloy leaching in an acid act as both anode and cathode?
If an alloy is placed in an acid where selective leaching is occurring, will the alloy act as both anode and cathode?
If the alloy does act as both anode and cathode then will the potential difference ...
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Does concentration of salt increase or decrease rate of rusting?
I want to know whether increasing the concentration of salt, specifically $\ce{NaCl}$, increases or decreases the rate of rusting. There are conflicting theories that explain opposite outcomes:
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Will an iron nail sunk in a highly concentrated salt solution rust?
Assume I have a salt solution with the same concentration as the dead sea and I put a iron nail into the solution (assume it sinks). Will it rust? If yes, why? If no, why not?
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