Last item. The school gets some aluminum millings from a boat business, but we can't really control the impurities that come with it. I'm already
trying to get a ratio of junk vs. aluminum/alumina with HCl, but beyond that I'd like to have a good guess to the metallic content and the oxidized
content of these shavings.
This really has legitimate purposes- every year one of the instructors demonstrates the Goldschmidt reaction for casting and welding applications.
This runs pretty dirty because of the unknowns in the materials, and I'd like to help fine tune the demonstration. |