rmel0124
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removing zinc from galvanized steel
hi to all,
just wanna ask how to remove zinc from a galvanized steel manually?
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bob800
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http://lmgtfy.com/?q=remove+zinc+from+galvinized+steel
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hkparker
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Slightly diluted HCl
My YouTube Channel
"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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rmel0124
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I already have a 85% phosphoric available right now would it be ok, on what concentration?
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bob800
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I don't know, but here's what Yahoo! Answers has to say (you can find lots of info by google-ing!):
| Quote: |
Yes, it should. But it might form a passivating layer of zinc phosphate. Because zinc is more active than hydrogen, it will displace hydrogen ions
from solution to form hydrogen gas and zinc(II) ions. We will see hydrogen bubbles and the formation of white, insoluble zinc phosphate as evidence of
this reaction.
Because phosphoric acid is a weak acid, and because the zinc phosphate might protect the rest of the zinc metal from attack, the reaction is likely to
be slow.
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Sedit
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Bathroom cleaners containing HCl will be more then enough to handle this if you can not get Muratic acid
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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Mr. Wizard
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Sodium Hydroxide or lye solution will also work, with the added benefit of not eating into the steel, and not accelerating rusting afterwards. HCl
works fast, but the rusting afterwards is very fast, even after a good rinse. I found this out while trying to remove some grease and oil from some
automotive parts with boiling NaOH solution in a galvanized bucket.
I agree the Phosphoric will react with the Zinc, but you get a Parkerizing effect and a Zinc Phosphate layer does form.
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bbartlog
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I'd go with Mr Wizard. Using acid will unavoidably do some amount of damage to the steel. Sodium hydroxide avoids this.
| Quote: | | here's what Yahoo! Answers has to say |
Try the following experiment sometime: in a field where you have expertise, look at the answers to 5-6 questions that you find on Yahoo Answers. I bet
Yahoo Answers doesn't have more than half of them anywhere close to right. Seriously, people like to rag on Wikipedia (with some justification) but
compared to Yahoo Answers the information in there is quite solid.
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smuv
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I wonder if you could use an aqueous solution of an iron(II) salt.
Edit: But generally for welding or preping the metal it is done non-chemically with an abrasive wire brush.
[Edited on 7-14-2011 by smuv]
"Titanium tetrachloride…You sly temptress." --Walter Bishop
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