Articles
  • Microstructure and mechanical properties of spark plasma sintered aluminabased composites reinforced with WC 
  • D. Ghahremania, I. Mobasherpourb,*, M. Razavib, H. Eslami Shahedb and H. Rajaeib
  • a Engineering department, Maybod Branch, Islamic Azad University, Maybod, Iran b Ceramics Department, Materials and Energy Research Center, P.O. Box 31787-316, Karaj, Iran
Abstract
Alumina-based composites reinforced with WC were fabricated by powder processing techniques and consolidated by sparkplasma sintering. Microstructure, strength, hardness and fracture toughness of the Al2O3-WC composites were studied. TheAl2O3-WC composite containing 5-20 wt% WC reached over 95% theoretical density at 1650 oC and nearly full density at1700 oC. The strength, Vickers hardness and fracture toughness of Al2O3-(10 wt. %)WC composite sintered at 1700 oC reacheda maximum value of 463 MPa, 2208 HV, and 4.15 MPa.m1/2 respectively.

Keywords: Alumina, WC, Composite, Spark plasma sintering

This Article

  • 2016; 17(11): 1143-1147

    Published on Nov 30, 2016