Degradation of silicon carbide-based materials in a high temperature combustion environment

T. Graziani, D. Baxter, C.A. Nannetti

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11 Citations (Scopus)

Abstract

The hot-salt corrosion behaviour of two SiC -based ceramics: a gas pressure sintered SiC and a hot-pressed SiC/graphite composite has been studied in simulated combustion environments with 0.01wt% sulphur (Jet Al) or 1wt% sulphur (marine diesel) liquid fuels using a low velocity burner rig. Tests were carried out for a total time of 50 hours at temperatures of 1100°C and 1200°C. After an initial loss of weight due to the evolution of carbon oxides, particularly marked in the case of the composite, the weight change measurements showed a parabolic rate of growth of a surface layer, suggesting that the rate of reaction was controlled by diffusion. The results of microstructural investigations are presented and the mechanisms governing corrosion are discussed. © 1996 Trans Tech Publications, Swizerland.
Original languageEnglish
Pages (from-to)153 - 164
Number of pages12
JournalKey Engineering Materials
Volume113
Publication statusPublished - 1996
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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