Ceramic Fibers and Ceramic-Matrix Composites for Ultrahigh Temperature Applications.

Abstract

The overall objective of this ASSERT project is to establish processing-microstructure-property relations for Sic fibers prepared using novel pre-ceramic polymer blends and selected processing additives. Under the ASSERT parent award, it was demonstrated that SiC fibers with improved thermomechanical stability (e.g., compared to commercial fibers such as Nicalon and Hi-Nicalon ) can be fabricated using blends of organosilicon (pre-ceramic) polymers. Such fibers are of interest for application in high temperature composite materials. In the present ASSERT project, the objective is to relate the chemical/structural characteristics of selected pre-ceramic polymer blends with the SiC fiber microstructure and mechanical properties. Another objective is to determine the effect of selected processing additives (i.e., boron- and aluminum-containing sintering aids and polysilazane fiber processing aids) on microstructure and mechanical properties.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1996
Accession Number
ADA316511

Entities

People

  • M. D. Sacks

Organizations

  • University of Florida

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Ceramic Fibers
  • Ceramic Matrix Composites
  • Composite Materials
  • Fibers
  • High Temperature
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Microstructure

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology
  • Reinforced Composite Materials
  • Research Science/Academic Research