Accession Number:

ADA275597

Title:

Innovative Processing of Composites for Ultra-High Temperature Applications. Book 1

Descriptive Note:

Annual rept.

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING

Report Date:

1993-11-01

Pagination or Media Count:

102.0

Abstract:

The overall objective of this program was to provide a fundamental understanding of the processing science and technology necessary to fabricate ceramic-matrix, intermetallic-matrix, and metal-matrix composites with superior mechanical properties in high temperature and oxidizing environments. The composites are intended for use as structural materials for advanced aerospace applications at temperatures exceeding 1200 deg C 2200 deg F. In order to accomplish the program objective, interactive research groups were established in three key area of a Fiber Fabrication, b Coatings and Infiltration, and c Composite Fabrication. The objective of the fiber fabrication group was to develop new fibers which have superior strength and toughness at high temperatures and in oxidizing environments. The research effort focused on the development of two types of fibers 1 glass-free mullite-based fibers, and 2 oxygen-free silicon carbide fibers. The coatings program had two primary objectives 1 to control the characteristics of matrixreinforcing phase interfaces e.g., to control chemical reactions and bonding at a matrixfiber interface and 2 to develop coatings that will improve the oxidation resistance of metal-matrix and intermetallic-matrix composites. Coatings methods utilized included chemical vapor deposition, sol-gel processing, and solution coating with polymeric precursors to ceramics.

Subject Categories:

  • Research and Experimental Aircraft
  • Laminates and Composite Materials
  • Textiles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE