[P] P251~P268

[P256] Mechanical Properties of Ultra-Fine WC-Co Materials by a Spark Plasma Sintering Process

*Min　hyeok Yang^1,2, Yu　gyun Park^1,2, Yeong　jung Kim^1,2, Hyun　kuk Park¹ (1. Korea Institute of Industrial Technology、2. Chonnam National University)

Keywords:

Tungsten carbide-cobalt,spark plasma sintering,vickers hardness,fracture toughness

WC-6Co nanocomposites were prepared by high-energy ball milling and SPS at 1200°C. The sintered body showed 1755.81 HV hardness and 25.62 MPa·m¹ᐟ² toughness with WC (271 nm) and Co (20.6 nm) grains.