Fabrication of SiCAlN/Mo functionally gradient material for high temperature use

Ryuzo Watanabe, Akira Kawasaki, Masahiro Tanaka, Jing Feng Li

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The powder metallurgical fabrication of a SiCAlN/Mo functionally gradient material for thermal barrier use is described. Molybdenum was used as a host material to share structural strength and joining capability. To obtain basic knowledge for the thermal barrier function, a detailed investigation was carried out for the determination of the compositional dependence of the thermal and mechanical properties in the SiCAlN ceramic alloy system. The results have shown that the samples HIPed at 2123 K at 200 MPa for 2 h from mixture of SiC and AlN powders have more sufficient thermal barrier properties with high fracture strength at elevated temperature than monolithic SiC and AlN. The designing of the compositional distribution with respect to the overall heat transfer in a temperature difference of 1000 K was studied. With an optimum compositional distribution, a sintered compact of functionally gradient material of SiCAlN/Mo was successfully fabricated.

Original languageEnglish
Pages (from-to)187-193
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume12
Issue number4
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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