Spark plasma sintering of Co-WC cubic boron nitride composites

YAMAN ISLAK B., MANDAL H.

MATERIALS LETTERS, vol.63, no.12, pp.1041-1043, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 12
  • Publication Date: 2009
  • Doi Number: 10.1016/j.matlet.2009.01.086
  • Journal Name: MATERIALS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1041-1043
  • Keywords: Tungsten carbide, WC-6Co-cBN composites, Spark plasma sintering, MECHANICAL-PROPERTIES, HARD MATERIALS, MICROSTRUCTURE, NANOCOMPOSITES, CARBIDE
  • Anadolu University Affiliated: Yes

Abstract

25 vol.% cubic boron nitride (cBN) added tungsten carbide (WC) powders containing 6 wt.% Co (WC-6Co) were densified by spark plasma sintering (SPS) technique under different experimental conditions and the effect of cBN addition on the microstructure, mechanical properties and thermal conductivity were investigated. Over 99.5% theoretical density was achieved for WC-6Co-cBN composites sintered at 1300 degrees C. under 75 MPa pressure for 7.5 min. Under these conditions, cBN -> hBN phase transformation was not observed. (C) 2009 Elsevier B.V. All rights reserved.