18thC Ottoman Flintlock Holster pistol restoration project.

Fernando K · 18th July 2011, 10:33 PM

Hola, Matchlock

No existe óxido estable: la película de óxido sigue carcomiendo debajo de su superficie, aunque en apariencia permanece inmóvil. Hasta en el pavonado (en realidad una oxidacion controlada) si no se sigue un tratamiento adecuado, termina en una oxidacion severa.
La electrólisis es inocua para el metal, y se basa en la propiedad del hidrógeno naciente para descomponer el óxido. Lo mismo pasa con el método de zinc-soda.

Saludos, Fernando

Hello, Matchlock

There is no stable oxide, the oxide film is eating away beneath its surface, although seemingly immobile. Even the peacock (actually a controlled oxidation) not following proper treatment, ending in a severe oxidation.
Electrolysis is safe for metal, and is based on the ownership of the nascent hydrogen to break down rust. Same with the zinc-soda method.

Regards, Fernando

Matchlock · 19th July 2011, 11:35 AM

Hi Fernando,

There seemingly still are different theories about rust. The workshops of the big museums share my theory, though.

Best,
Michael

18th July 2011, 10:33 PM	#1
Fernando K Member Join Date: Apr 2010 Posts: 672	Hola, Matchlock No existe óxido estable: la película de óxido sigue carcomiendo debajo de su superficie, aunque en apariencia permanece inmóvil. Hasta en el pavonado (en realidad una oxidacion controlada) si no se sigue un tratamiento adecuado, termina en una oxidacion severa. La electrólisis es inocua para el metal, y se basa en la propiedad del hidrógeno naciente para descomponer el óxido. Lo mismo pasa con el método de zinc-soda. Saludos, Fernando Hello, Matchlock There is no stable oxide, the oxide film is eating away beneath its surface, although seemingly immobile. Even the peacock (actually a controlled oxidation) not following proper treatment, ending in a severe oxidation. Electrolysis is safe for metal, and is based on the ownership of the nascent hydrogen to break down rust. Same with the zinc-soda method. Regards, Fernando

19th July 2011, 11:35 AM	#2
Matchlock (deceased) Join Date: Sep 2008 Location: Bavaria, Germany - the center of 15th and 16th century gunmaking Posts: 4,310	Hi Fernando, There seemingly still are different theories about rust. The workshops of the big museums share my theory, though. Best, Michael