Development of Unidirectionally Solidified Eutectic Ceramic Matrix-Metal Composites

Abstract

The objective of this work was to identify and develop directionally solidified ceramic matrix-metal eutectic composites for use uncoated at temperatures > or = 1315 C (2400 F) in aircraft gas turbines. The primary approach was to discover metal-oxygen systems in which the metal whisker phase would form a self-protective oxide coating when exposed to elevated temperatures. A number of metal-oxygen combinations were examined including Ta, Ta + Ta2O5, Ti or Nb with Al2O3, Cr2O3 solid solutions, Cr and Cr + Ta with the MgO.Al2O3 spinel, Cr with the mullite-zircon eutectic composition, Fe and Fe + Cr with the FeO.Cr2O3 spinel with and without Al2O3 replacements for some of the Cr2O3.

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Document Details

Document Type
Technical Report
Publication Date
May 15, 1976
Accession Number
ADA030977

Entities

People

  • Charles O. Hulse

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ceramic Matrix Composites
  • Chemical Vapor Deposition
  • Composite Materials
  • Crystal Structure
  • Eutectic Composites
  • Grain Boundaries
  • Impact Strength
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Metal Matrix Composites
  • Metal Oxides
  • Refractory Metals
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Surface Engineering/Surface Coating Technology.