Microstructures and mechanical properties of TiB2-SUS316L cermets prepared by pressureless sintering

Dong Gil Ahn, Akira Kawasaki, Ryuzo Watanabe

Research output: Contribution to journalArticle

Abstract

The densification behaviour of different TiB2 powders sizes of TiB2-(3∼25vol%)Stainless steel (SUS316L) cermets was examined during pressureless sintering in argon atmosphere. Microstructures of sintered cermets and mechanical properties such as Vickers hardness, bending strength, fracture toughness and Young's modulus were also investigated. When fine TiB2 powders were used, TiB2-SUS cermets with good sinterability and enhanced mehcanical properties could be produced. Full density sintered cermets were obtained, and a new phase, Fe2B, was observed in 5∼15vol%SUS cermets. The highest hardness values of 21GPa and the Young's modulus of 498GPa were obtained at 5vol%SUS. The highest bending strength of 1290MPa, was obtained for the 15vol%SUS cermet. Iron borides and titaniume oxides in sintered cermets are connected with the presence of B, O impurities in TiB2 powders. In order to improve mechnical properties, finer powders with low oxygen and carbon content, are desirable.

Original languageEnglish
Pages (from-to)128-133
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume43
Issue number1
DOIs
Publication statusPublished - 1996 Jan 1

Keywords

  • Cermet
  • Mechanical property
  • Microstructure
  • TiB2-SUS

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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