Whats the difference between silicon carbide and silicon nitride?
Silicon carbide is a glass like material which composes the element of the hot surface igniter. Silicon nitride is a very rigid material which in may cases can be substituted for silicon carbide. There are two main differences between nitride and carbide: Silicon carbide igniters are very fragile, whereas silicon nitride igniters are virtually unbreakable. And, silicon carbide igniters can be used in direct sense applications, whereas silicon nitride igniters cannot.
