Interface Engineering in Oxide Fiber/Oxide Matrix Composites

Abstract

We have shown in earlier work that fiber roughness is a very important parameter along with the thermal mismatch between the components. PRD- 166 fiber, used so far, is a very rough fiber. Saphikon, single crystal alpha- alumina, is a relatively smooth fiber, but very expensive due to its processing cost. A new polycrystalline alumina fiber, Nextel 610, has recently become available. Due to its smoother surface than that of PRD-166 fiber, this fiber can be a good reinforcement candidate in oxide/oxide composites. We have done microstructural and mechanical characterization of Nextel 610 fiber. The tensile strength of Nextel 610, after exposure to 900-deg C, 1100 deg-C, and 1300-deg C was determined using a two-parameter Weibull distribution. It was observed that the primary reason for the loss of the fiber strength was the grain growth.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1993
Accession Number
ADA261705

Entities

People

  • K. K. Chawla

Organizations

  • New Mexico Institute of Mining and Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Matrix Composites
  • Chemical Vapor Deposition
  • Composite Material Fabrication
  • Composite Materials
  • Engineering
  • Fabrication
  • Failure Mode And Effect Analysis
  • Grain Growth
  • Mass Spectrometry
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Reinforced Composite Materials
  • Statistical inference.