Preparation of Al2O3-cBN functionally graded material by spark plasma sintering

Mikinori Hotta, Takashi Goto

研究成果: Article査読

抄録

Al2O3-cBN functionally graded material (FGM) was synthesized by spark plasma sintering (SPS) using powder compact with graded compositions containing 0 to 20 vol% cBN under a uniaxial pressure of 100 MPa. Densification, phase transformation of cBN, microstructure, hardness and fracture toughness of the FGM were investigated. Al2O3-cBN FGM with relative density of more than 99% was prepared at 1300 °C for 600s. No obvious interface between Al2O3 and cBN layers was observed, and cBN particles were uniformly dispersed in an Al 2O3 matrix. Vickers hardness and fracture toughness continuously increased with cBN content, and reached to 28 GPa and 5 MPa · m1/2 respectively at the surface layer.

本文言語English
ページ(範囲)373-377
ページ数5
ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
55
5
DOI
出版ステータスPublished - 2008 5月

ASJC Scopus subject areas

  • 機械工学
  • 産業および生産工学
  • 金属および合金
  • 材料化学

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