On a small/micro jet engine, can the turbine blades and vanes be made out of ceramic? I am researching on how to make a small jet engine, and trying to figure out the materials for rotor and stator blades just after the combustion chamber so that they can hold up to the temperatures they will encounter.

I'm looking for cast repeatable shaped blades and trying to figure out what kind of forge or kiln to use.

My questions:


Should the blades vanes be nickel alloys or can they be ceramic so that dilatation won't make them interfere with adjacent parts?
Will the ceramic be too brittle?
I can't speak for all engines, but GE has been testing ceramic blades in their LEAP engines.
Here is their report on it.