All Questions
Tagged with corrosion electrochemistry
17
questions
2
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How can I accelerate iron corrosion in a way that simulates natural processes?
I am attempting to conduct a research project comparing the effect of various current levels on electrolytic rust removal. Somewhat ironically however, I need a way to induce corrosion in a ...
- 29
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votes
1
answer
54
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NiCr wire and water
Suppose I'm a very impatient person and I want to heat up water by getting rid of the layer of isolation between a NiCr wire and the water (e.g. skinny-dipping). The idea is that, since the wires can ...
0
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3
answers
535
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Does iron rust because of impurities found in it (ex. carbon)?
If we, theoretically, get a piece of ideally 100% pure iron and it is left in moist air? Will it rust? My understanding of iron rust is that the Iron itself becomes the ANODE and carbon impurities (as ...
- 21
3
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1
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228
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When we are looking for volts vs SHE, is it that the potential of the element is compared to hydrogen potential?
I'm new to understanding this aspect of electrochemistry and only just now refreshing my memory of high school chemistry for a specific purpose. If I've worded the question or anything else ...
- 51
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2
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Is it possible to electrochemically remove the aluminum fouling a steel file?
I have a number of metal files that, to my regret, I have used on aluminum which gets stuck to the teeth. As suggested on several mechanics forums, I have tried soaking the files in concentrated ...
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-2
votes
1
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222
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Corrosion rate of aluminium
In which conditions the corrosion rate of aluminium is faster?
a) acidic conditions
b) neutral
c) alkaline conditions
I know that corrosion can be in a and c cases but I dont know when it'll be faster....
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-2
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1
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475
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Rusting of iron is quicker in saline water than in ordinary water [duplicate]
I feel so because, saline water has more more electrons and because of that there will be oxidation will take place faster and hence the overall process will speed up. Is this explanation good enough ...
- 151
1
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65
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"Hairy" corrosion on anodized alu-part in water
I got a water tank with a mechanical assembly in.
The assembly consist of parts of anodized aluminium mounted on stainless steel plates (AISI 304). This is submerged down in fresh water. The tank is ...
- 11
3
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94
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Rate of cathodic reaction vs Tafel slope
One of my reference engineering books says that for the cathodic protection process (in seawater):
Al $\rightarrow$ Al$^{3+}$ + $3e^-$ (anode, setting the protection potential at about -900 mV SCE)
...
- 31
1
vote
1
answer
574
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Can gold cause tin or other metals to corrode?
I stumbled upon the following article while trying to identify some old RAM modules:
https://www.techrepublic.com/article/quickly-identify-ram-chips-with-these-tips/
In the article, it mentions the ...
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66
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What happens electrochemically when bird droppings corrode cars?
I think the metal of the car first goes through an acid corrosion, followed by an electrochemical corrosion. First, the uric acid in bird poop corrodes with iron: 2Fe+C5H4N4O3 -> C5N4O3Fe2+2H2. Then, ...
- 11
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votes
4
answers
177
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How Can I Induce Corrosion Electrochemically?
I'm very interested in measuring corrosion in metal alloys, particularly in salt solutions. I understand metals corrode over time, however, I was wondering if it's possible to electrochemically "speed ...
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1
vote
1
answer
132
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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 ...
- 21
4
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0
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79
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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 ...
- 168
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1
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136
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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?
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