Accession Number:

ADA238908

Title:

High Temperature Properties of Ceramic/Carbon Systems in an Oxidizing Environment

Descriptive Note:

Final rept. 1 Jun 87-30 Sep 90,

Corporate Author:

WEST VIRGINIA UNIV MORGANTOWN DEPT OF PHYSICS

Report Date:

1991-05-10

Pagination or Media Count:

13.0

Abstract:

The objective of the research has been to identify how deleterious effects on bonding develop that can cause deterioration of mechanical properties of carbon-based ceramics in a high temperature environment and then to learn how to design modified ceramic systems that can better withstand such conditions. To do this, we have developed a coordinated computer modelingexperimental study concentrating on fracture and ductility behavior as affected by impurities and defects, high temperatures and bonding effects at material interfaces. We made and studied a variety of metalcarbon and siliconcarbon systems both in naturally occurring crystals and in superlattices. The results obtained in the coordinated study provide valuable information on the interface stability of superlattice systems and on their mechanical and structural properties as compared to systems in naturally occurring crystalline forms.

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE