High temperature wear resistance of tungsten carbide particle reinforced intermetallic compound matrix composite by in-situ thermite reaction

Abstract

Tungsten carbide (WC) particle reinforced Ni3Al intermetallic matrix composites (WC–Ni3Al) was first fabricated by in situ thermite reaction. The microstructure and high temperature wear resistance of the WC-Ni3Al composite have been studied. The WC-Ni3Al composite contains Ni3Al, WC and B2 phases, and the volume fraction of Ni3Al, WC and B2 were 55.27%, 10.67% and 34.06%, respectively. The WC-Ni3Al composite exhibits excellent friction and wear resistance. Our findings have important engineering implications for the preparation of intermetallic matrix composites.

Keywords

• In-situ
• Thermite reaction
• Intermetallic matrix composites
• Friction and wear