All Questions
16
questions
2
votes
1
answer
328
views
How easily should 304 stainless steel dissolve in a salt and hydrogen peroxide solution?
This is a simple question, although I don't have any exact numbers.
I was looking to buy a food-safe stainless steel sieve, and one of the reviewers showed the sieve they purchased heavily rusted and &...
- 147
0
votes
1
answer
54
views
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 ...
-1
votes
1
answer
64
views
Best material selection for a component containing hot saturated-level saline water with high chloride content (Polymer vs coated metal)
I have a component (Which can be seen as the attached file)
and inside the component, there would be hot saturated-level saline water with high chloride content (Not shown)
Considerations:
The ...
- 17
0
votes
0
answers
57
views
Corrosive potential of molten ionic salt
I was looking at this video about fourth generation of nuclear reactors and one of developing concepts is molten salt reactor (MSR) where melted ionic salt replaces water as coolant and also acts as a ...
- 109
1
vote
1
answer
6k
views
What is this white layer on brass?
I have an object made of what I assume to be brass, i.e. an alloy of copper and zinc.
The curved parts have both a black layer and a white layer (also note the verdigris (I guess) on the left top, but ...
-1
votes
1
answer
1k
views
Why is RO water more corrosive?
According to several articles from the American Water Works Association, permeate from RO should be stabilized in terms of pH and hardness to avoid corrosion of the distribution piping.
How does ...
- 69
7
votes
3
answers
205
views
Rusting in every other bar
I have noticed that, when a structure with bars (such as a gate or a grate) develops rust, this sometimes happens differently across the bars. In particular, it seems that the bars are alternatively ...
- 181
1
vote
0
answers
138
views
Why is aluminum oxide resistant to corrosion?
It is common knowledge that aluminum is relatively resistant to corrosion due to its tough oxide layer. The ultrathin (1 nm even) layer is impervious to water and oxygen. What I can't figure out is, ...
- 387
7
votes
2
answers
664
views
How do metals split the oxygen double bond during corrosion?
For a metal like $\ce{Mg}$ to corrode into $\ce{MgO}$, the double bond in $\ce{O2}$ must break. Since the dissociation energy of $\ce{O2}$ is 500 kJ/mol, using estimates from the Boltzmann ...
- 139
1
vote
0
answers
2k
views
Brass - is this corrosion or oxidation and why did it happen?
I have bought a new brass Y-split water valve which is plain brass but inside is a more polished one, it was packed nicely and I opened it 2 days ago, washed it off with water for some reason, then ...
- 129
1
vote
1
answer
574
views
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 ...
- 874
2
votes
2
answers
296
views
Low-cost nontoxic corrosion inhibitor for steel exposed to hydrochloric acid
It seems that many commercial descaling solutions designed to remove scale (calcium carbonates, etc that form on water heaters) are a simple combination of an acid and an acid corrosion inhibitor for ...
- 131
1
vote
2
answers
116
views
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 ...
4
votes
0
answers
79
views
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
1
vote
2
answers
107
views
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 ...
- 11