Aluminum rust

PopSci has an interesting article about a favorite RV material – aluminum.

when aluminum rusts, it forms aluminum oxide, an entirely different animal. In crystal form, aluminum oxide is called corundum, sapphire or ruby (depending on the color), and it is among the hardest substances known. If you wanted to design a strong, scratchproof coating to put on a metal, few things other than diamond would be better than aluminum oxide.

Anodized aluminum means it has been treated to get an extra thick layer of aluminum oxide to protect the material.

But don’t get mercury anywhere near it as, well, read the story!

Comments are closed.