Cermet composite coating with a ductile Ni3Al binder phase and an in-situ Cr7C3 augmented phase

Boron doped Ni3Al intermetallic and in-situ Cr7C3 composite metal-ceramic powder were prepared by inert gas atomization method, and then the coating was prepared by HVOF. The Ni3Al alloys wet the in-situ ceramic particles well and form a continuous internal acicular crystalline phase. Mechanical property and wear performance testing showed the hardness, thermal shock performance and wear resistance of the coating are retained to temperatures of...