Oxidation-resistant interface coatings for SiC/SiC composites
- Oak Ridge National Lab., TN (United States); and others
The characteristics of the fiber-matrix interfaces in ceramic matrix composites control the mechanical behavior of these composites. Finite element modeling (FEM) was performed to examine the effect of interface coating modulus and coefficient of thermal expansion on composite behavior. Oxide interface coatings (mullite and alumina-titania) produced by a sol-gel method were chosen for study as a result of the FEM results. Amorphous silicon carbide deposited by chemical vapor deposition (CVD) is also being investigated for interface coatings in SiC-matrix composites. Processing routes for depositing coatings of these materials were developed. Composites with these interfaces were produced and tested in flexure both as-processed and after oxidation to examine the suitability of these materials as interface coatings for SiC/SiC composites in fossil energy applications.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 458943
- Report Number(s):
- ORNL/FMP--96/1; CONF-9605167--; ON: DE97050349
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of sol-gel derived coating for NICALON{sup TM}/SiC composites
Processing and mechanical behavior of Nicalon{reg_sign}/SiC composites with sol-gel derived oxide interfacial coatings