Effect of chemical vapor infiltration of Si 3N 4 on the mechanical and dielectric properties of porous Si 3N 4 ceramic fabricated by a technique combining 3-D printing and pressureless sintering

Xiangming Li, Litong Zhang, Xiaowei Yin

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

Porous Si 3N 4 ceramic with a porosity higher than 70% is fabricated by a technique combining three-dimensional printing and pressureless sintering. Using chemical vapor infiltration (CVI) of Si 3N 4, the mechanical properties of the porous Si 3N 4 ceramic are clearly improved by increases in the connection strength among β-Si 3N 4 particles and the loading ability of β-Si 3N 4 particles. The porous Si 3N 4 ceramic after CVI of Si 3N 4 is an excellent wave-transparent material due to its good mechanical properties and excellent dielectric properties.

Original languageEnglish
Pages (from-to)380-383
Number of pages4
JournalScripta Materialia
Volume67
Issue number4
DOIs
StatePublished - Aug 2012

Keywords

  • 3-D printing
  • CVI
  • Dielectric properties
  • Mechanical properties
  • Si N

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