Technically, rust can only occur on iron-heavy metals and alloys. Otherwise it’s just called oxidation.
The difference with “rust” is that rust will eat into the metal and change its shape, while oxydation only changes the surface color and texture.
Edit: yeah… Rust is a specific type of oxydation, it wasn’t really clear from my comment. What I wanted to say is that rust implies the material is iron-based!
Well, not quite. Rust eats into iron because oxidised iron is larger and much more brittle than unoxidised iron, physically ripping itself out of place.
Many oxides arent that much larger than their base metals and form a nice patina protecting the metal underneath, like in aluminium.
Other oxides destroy the structural integrity of the metal and eat into it, forming corrosion. Rust is just corrosion specific to iron.
This is not true. Oxidation is a broad type of chemical reaction involving the loss of electrons. Rust is a type of oxidation, much as a square is a type of rectangle. Oxidation can occur on the surface level (tarnishing of some metals, passivation of aluminum) or throughout (combustion). Rust actually only occurs on the surface as well, but the iron oxide is less dense than the metal and it increases the available area of the surface exposed to oxygen.
Technically, rust can only occur on iron-heavy metals and alloys. Otherwise it’s just called oxidation.
The difference with “rust” is that rust will eat into the metal and change its shape, while oxydation only changes the surface color and texture.
Edit: yeah… Rust is a specific type of oxydation, it wasn’t really clear from my comment. What I wanted to say is that rust implies the material is iron-based!
Well, not quite. Rust eats into iron because oxidised iron is larger and much more brittle than unoxidised iron, physically ripping itself out of place.
Many oxides arent that much larger than their base metals and form a nice patina protecting the metal underneath, like in aluminium.
Other oxides destroy the structural integrity of the metal and eat into it, forming corrosion. Rust is just corrosion specific to iron.
I didn’t know of other type of oxides that eat into the metal like rust does…
But it’s true that a “rusted crown” implies that it is iron-based, so the cantrip should work!
This is not true. Oxidation is a broad type of chemical reaction involving the loss of electrons. Rust is a type of oxidation, much as a square is a type of rectangle. Oxidation can occur on the surface level (tarnishing of some metals, passivation of aluminum) or throughout (combustion). Rust actually only occurs on the surface as well, but the iron oxide is less dense than the metal and it increases the available area of the surface exposed to oxygen.
Yeah… Reading back my comment, it was badly written… I know rust is a type of oxydation, but that’s not what I wrote!
Lol thermite is my favorite oxidation & rust remover reaction
Ah yes, removes the rust, the object, and the table it was sitting on…