Preparation of WC-WB-W<SUB>2</SUB>B Composites from B<SUB>4</SUB>C-W-WC Powders and their Mechanical Properties

• Sugiyama Shigeaki

  Akita Prefectural Industrial Technology Center

• Taimatsu Hitoshi

  Department of Materials Science and Engineering, Faculty of Engineering and Resource Science,Akita University

Bibliographic Information

Other Title

• Preparation of WC-WB-W2B Composites from B4C-W-WC Powders and their Mechanical Properties

Abstract

Sintered composites of WC–WB–W₂B were prepared from B₄C–W–WC powders using a reactive energization hot-pressing technique that initiated a solid state reaction between B₄C and W. Below a WC mole fraction of 0.769 in the starting powder, WB and WC were formed according to the reaction B₄C+5W+xWC=WB+(1+x)WC, while WB, W₂B, and WC were produced above a mole fraction of 0.854. Densely sintered bodies were not obtained for pure WC. Composites of WC–WB–W₂B obtained at WC mole fractions between 0.854 and 0.956 were fully consolidated, having high Young’s modulus and Vickers hardness values, and a fracture toughness which were comparable to those of WC.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (5), 1197-1201, 2002

  The Japan Institute of Metals and Materials

Keywords

• reaction sintering
• solid-state reaction
• cemented carbide
• boron carbide
• tungsten
• tungsten carbide
• tungsten boride
• mechanical properties

Details

• CRID: 1390001204247822080
• NII Article ID: 10012323818
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.43.1197
• COI: 1:CAS:528:DC%2BD38Xlt1enu7Y%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 6180576
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6180576
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/5/43_5_1197/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed