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Oxidation-resistant interface coatings for Nicalon/SiC composites

Conference ·
OSTI ID:330665
; ;  [1]; ;  [2]
  1. Oak Ridge National Lab., TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)

Nicalon/SiC composites with thin C and C/oxide/C interfaces were fabricated. The oxide layers, mullite and Al{sub 2}O{sub 3}-TiO{sub 2}, were deposited by a sol-gel process, while the C layer was deposited by a chemical vapor infiltration method. The fabricated composites were flexure tested in both as-processed and oxidized conditions. Composites with C and C/oxide/C interfaces retained graceful failure even after 500 h oxidation at 1000 C, but with reduced flexural strengths.

Research Organization:
Oak Ridge National Lab., TN (United States)
OSTI ID:
330665
Report Number(s):
CONF-9705115--PROC.; ORNL/FMP--97/1; ON: DE98007329
Country of Publication:
United States
Language:
English