Elastic properties and microcracking behavior of particulate titanium diboride-silicon carbide composites

Ming Jen Pan, Patricia A. Huffman, David J. Green, John R. Hellmann

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The spontaneous microcracking of particulate TiB2-SiC composites is studied as a function of TiB2 volume fraction. The degree of microcracking was examined by measuring elastic properties from room temperature to 1300°C. The results showed that only one composition contains microcracks. All other compositions did not microcrack regardless of TiB2 volume fraction. This was attributed to the difference in the sintering aids. In particular, the A12O3 sintering aid needed in these compositions had reacted with SiO2 to form an amorphous grain boundary phase that allowed residual stresses to relax by viscous flow at moderate to high temperatures. The existence of this amorphous grain boundary phase was directly observed by transmission electron microscopy.

Original languageEnglish (US)
Pages (from-to)692-698
Number of pages7
JournalJournal of the American Ceramic Society
Volume80
Issue number3
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Elastic properties and microcracking behavior of particulate titanium diboride-silicon carbide composites'. Together they form a unique fingerprint.

Cite this