Designed Ceramics for Aerospace Applications
Abstract
During this project we have optimized the performance of alpha-SiAlON with respect to the following properties: hardness, fracture toughness, room temperature strength, high temperature strength, oxidation resistance, and machinability. Strong correlations between some of these properties have been found. For example, a positive correlation between fracture toughness and room temperature strength, a positive correlation between high temperature strength and oxidation resistance, a negative correlation between hardness and machinability, and a negative correlation between fracture toughness and high temperature strength. By controlling composition and microstructure, optimization of a subset of properties have been achieved. Various alpha-SiAlONs thus optimized are suitable for applications that call for different, tailorable properties.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2005
- Accession Number
- ADA437386
Entities
People
- I-wei Chen
Organizations
- University of Pennsylvania