Experiment: is that metallic shade iron? (quickvideo)
Ғылым және технология
In my last video, making the experiment with acetic acid to remove rust from an old hammer, at the end of the treatment I've noticed kind of a patina on the hammer that easily came off by just rubbing with my fingers. It came off as a fine slush leaving a metallic shade on my glove.
Without thinking too much, on video I've said: it's gotta be iron powder.
Is it really?
A viewer posted a clever comment to the video, pointing out that the powder was not iron but carbon, since hammers are made out of high carbon steel.
He had a good point, so I decided to carry a little experiment showcased in this video.
Пікірлер: 3
I've been not able to determine what the substance is, it could be carbon and maybe even iron acetate, not sure. I should have carried the experiment again and recover the patina on a petri dish and then from there make some chemical/physical tests, not using the substance remained on the old glove, but the scope of this video was to do something dirty quick to address a wrong assessment hastily made in the previous video: that powder is not iron.
I vaiguely remember from watching another youtube vid that the black stuff is an iron oxide, its FeO. Commonly formed when removing rust by electrilysis. im not certain about this but.... Cheers
Rust stain?