Fiber Coatings for the Fabrication of Graphite-Reinforced Magnesium Composites,

Abstract

A new fabrication technique for graphite-fiber-reinforced magnesium is presented. An air-stable silicon-dioxide coating is deposited on the fiber surfaces from an organometallic precursor solution. The fibers are passed through this solution followed by hydrolysis or pyrolysis of the organometallic compound to form silicon dioxide on the fiber surfaces. The silicon-dioxide coating facilitates wetting and bonding when the fibers are immersed in molten magnesium. A modification of this coating technique was developed for coating fibers with amorphous carbon, which was found to improve the adhesion between the graphite fibers and the silicon-dioxide coating. Composites containing either T300, P55, or P100 graphite fibers in pure magnesium - 1% silicon, and magnesium alloy AZ91 have been fabricated. Preliminary mechanical property data are presented. Keywords: Alkoxides; Composite fabrication; Fiber coatings; Metal-matrix composites.

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Document Details

Document Type
Technical Report
Publication Date
May 15, 1986
Accession Number
ADA168805

Entities

People

  • Howard A. Katzman

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Matrix Composites
  • Chemical Synthesis
  • Chemical Vapor Deposition
  • Chemistry
  • Composite Material Fabrication
  • Composite Materials
  • Electron Microscopy
  • Graphitic Materials
  • Magnesium Compounds
  • Mass Spectrometry
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Spectra
  • Spectrometry
  • Spectroscopy

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.