Dense Layered Molybdenum Disilicide-Silicon Carbide Functionally Graded Composites Formed by Field-Activated Synthesis

Ellen M. Carrillo-Heian, R. Douglas Carpenter, Glaucio H. Paulino, Jeffery C. Gibeling, Zuhair A. Munir

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Dense, layered, single- and graded-composition composites of MoSi2 and SiC were formed from elemental powders in one step, using the field-activated pressure-assisted combustion method. Compositions ranging from 100% MoSi2 to 100% SiC were synthesized, with relative densities ranging from 99% to 76%, respectively. X-ray diffractometry results indicated the formation of pure phases when the concentration of MoSi2 was high and the appearance of a ternary phase, Mo4.8Si3C0.6, when the concentration of SiC was high. Electron microprobe analysis results showed the formation of stoichiometric and uniformly distributed phases. A layer-to-layer variation in composition of 10 mol% was sufficient to prevent thermal cracking during formation of the layered functionally graded materials.

Original languageEnglish (US)
Pages (from-to)962-968
Number of pages7
JournalJournal of the American Ceramic Society
Volume84
Issue number5
DOIs
StatePublished - May 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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