School;
of;
Materials;
and;
Metallurgy,;
Northeastern;
University,;
Shenyang;
110004,;
China;
School;
of;
Materials;
and;
Metallurgy,;
Northeastern;
University,;
Shenyang;
110004,;
China;
composite; materials; carbothermal; reduction; zircon; lanthanum; oxide; rare; earths;