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Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

(OP)
Hi,

I am interested in the derusting of rusty automotive parts using "household" acids readily available everywhere.

1. I am interested in graphs/tables representing the corrosion rate (mm pr year or similar) vs acid concentration (%) of

a) mild steel
b) rust (all the oxidation stages)

simultanously in the same acidic environment. This is to understand how much faster rust is removed from the surface compared to the base metal itsel (mild steel). Ideally I would like to see a graph where both "mild steel" and "rust" is plotted at the same time. This is to understand the ideal strength of the solution.

2. I am interested in data for:

a. Hydrochloric acid
b. Phosphoric acid
c. Nitric acid
d. Sulphuric acid
e. Acetic acid
f. Citric acic
g. Oxalic acid

Is it possible to find such data, ideally where everything has been tested by the same team to ensure the same lab conditions?

Thanks,

Lucas

RE: Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

Buy one of the commercially available rust removal solutions.
https://www.theruststore.com/Webpage.aspx?WebpageI...
I personally like the Bullfrog products, they the retail version made by a major manufacturer of corrosion inhibitors.

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P.E. Metallurgy, Plymouth Tube

RE: Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

(OP)
Thank you. However, I still need the acid data for "emergencies" when you dont have these specialized products.

Lucas

RE: Corrosion rate vs concentration for hydrochloric, sulfuric, phosphoric, acetic acids etc.

Look up some of the 'home brew' versions.
Some are based on vinegar, I prefer ones using citric, oxalic, boric, or phosphoric acids.
Dilute (5%) and slightly warmed usually does the job.

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P.E. Metallurgy, Plymouth Tube

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