Red rust

Sajen · 3rd January 2018, 11:47 AM

Any steel can show red rust, antique or new one and can't be a proof of authenticity! But black rust "can" be a sign of good age.
And I agree with everything Robert and Marius have stated!

Fernando K · 3rd January 2018, 02:13 PM

Hello

With the little that is of chemistry, I know that there is no inactive oxide. Even the black oxide (ferrous-ferric) of the blued, continues to act if it does not receive a conservation treatment. What happens is that it continues its action below the surface of the metal, and its action is not seen, and it is very slow

Fernando K

3rd January 2018, 11:47 AM	#1
Sajen Member Join Date: Aug 2007 Location: Germany, Dortmund Posts: 9,272	Any steel can show red rust, antique or new one and can't be a proof of authenticity! But black rust "can" be a sign of good age. And I agree with everything Robert and Marius have stated!

3rd January 2018, 02:13 PM	#2
Fernando K Member Join Date: Apr 2010 Posts: 671	Hello With the little that is of chemistry, I know that there is no inactive oxide. Even the black oxide (ferrous-ferric) of the blued, continues to act if it does not receive a conservation treatment. What happens is that it continues its action below the surface of the metal, and its action is not seen, and it is very slow Fernando K