Ceramic engineering is the science and technology of creating objects from inorganic, non-metallic materials.
Useful non-metallic materials often work by some combination of the two.
So far we have dealt mostly with metals and with natural non-metallic materials of various kinds.
It can apply to both metallic and non-metallic materials, in the presence or absence of oxygen.
In this case, the "semiconductor" examined can, in fact, be almost any non-metallic material.
Unusual non-metallic materials may also be used; manufacturing techniques are quite different from metal:
It can apply to both metals and non-metallic materials.
The term covers inorganic non-metallic materials which are formed by the action of heat.
As they have larger clearance between teeth, these are usually used on softer, non-metallic materials.
It's also advisable to wrap your dope in a non-metallic material.