Anvils allow you to rename items, repair enchanted items, and even combine the enchantments from different items, at the cost of experience points. Crafting. You'll need 3 blocks of iron, plus 4 more iron bars, for a total of 31 iron bars.
Passivation is the treatment of the surface of stainless steels, often with acid solutions (or pastes), to remove contaminants and promote the formation of the passive film on a freshly created surface (e.g. through grinding, machining or mechanical damage).
Passivation is a process to build up a layer of Chromium oxide armour on Austenetic Stainless steel of ships cargo tanks. This mono-molecular oxide layer is about 10 angstroms (one divided by 10 million-- millimeters) is invisible, chemically unreactive, self repairing and uni-potentialises the Stainless steel surface.