Design, Synthesis, and Chemical Processing of Hierarchical Ceramic Structures for Aerospace Applications
Abstract
Ceramic materials are beginning to replace conventional materials in high temperature structural applications, but further advances are needed to improve their reliability. To analyze the complex behavior of ceramics, it is useful to consider the structure on four hierarchical levels - namely the molecular-, nano-, micro, and macroscales. Interactions at and between these various levels of structure exert important and often quite specific influences. The research conducted for this effort involved using chemical approaches to synthesize and process ceramic powders to create and control these hierarchical structures in ceramic materials. With the development of chemical approaches for synthesizing and processing ceramics, it is possible to develop synthetic and processing methods to control the molecular and nanostructure of ceramic powders. This report describes our efforts to synthesize submicron SiC, TiB2, TiC, and TiN powders, and nanocomposites from preceramic polymers. Efforts to synthesize epitaxial LiNbO3 films from alkoxide precursors are also described. Ceramic processing, Ceramic powders, Ceramic composites, Nanocomposites, SiC, TiB 2, TiN, TiC, Cordierite, A1203, A1N, Synthesis, Metal organic precursors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1993
- Accession Number
- ADA264227
Entities
People
- H. K. Bowen
- Michael J Cima
- Wendell E. Rhine
Organizations
- Massachusetts Institute of Technology