Synthesis of W<SUB>2</SUB>C by Reactive Hot Pressing and Its Mechanical Properties

• Taimatsu Hitoshi

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

• Sugiyama Shigeaki

  Akita Prefectural Research and Development Center

• Kodaira Yuichiro

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

Bibliographic Information

Other Title

• Synthesis of W2C by reactive hot pressing and its mechanical properties

Abstract

Tungsten hemicarbide W₂C with no or small amounts of W or WC was prepared by reaction-sintering from W and WC powders using a resistance-heated hot-pressing technique called spark plasma sintering. The product phases, density, microstructure, elastic moduli, hardness, and fracture toughness of the sintered bodies were determined. The stable region of the W₂C phase had a narrow carbon content below 1860°C. W₂C had a Poisson’s ratio of 0.286, and its Young’s modulus at zero porosity was determined to be 444 GPa from the true density and bulk density dependence. These values suggest that W₂C has elastic deformation behavior similar to that of W.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (6), 1256-1261, 2008

  The Japan Institute of Metals and Materials

Keywords

• tungsten hemicarbide
• sintering
• hot pressing
• density
• mechanical properties
• phase diagram

Details

• CRID: 1390282679226140672
• NII Article ID: 10021147273
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mra2007304
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 9519028
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9519028
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/6/49_MRA2007304/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed