Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: paul.fr on 29/03/2008 22:26:25

Title: Why does steel change colour as it's heated, and what happens to it's structure?
Post by: paul.fr on 29/03/2008 22:26:25

Why does steel change colour as it's heated, and what happens to it's structure?

Title: Why does steel change colour as it's heated, and what happens to it's structure?
Post by: lightarrow on 29/03/2008 22:57:57

Quote from: paul.fr on 29/03/2008 22:26:25

Why does steel change colour as it's heated, and what happens to it's structure?

The colour is due to the formation of thin layers of oxide; the exact colour depends on the exact film's tickness: see interference by thin layer or similar concept. There is something here:
http://en.wikipedia.org/wiki/Anti-reflective_coating