PREPARATION OF ORIENTED COMPOSITE MATERIALS BY ZONE MELTING TECHNIQUES,

Abstract

Zone melting was used to produce oriented composite materials of off-eutectic composition. The zone melting of camphor - anthracene mixtures was observed with a microscope. This system was chosen as a transparent low-temperature analog of the technologically important refractory carbide - graphite mixtures. Irregular lamellar structures were produced at high values of the ratio of the temperature gradient G to the zoning rate V. The lamellar spacing was an order of magnitude greater than the corresponding spacing for eutectic metal systems. Oriented dendritic structures were produced at low values of G/V. Transient and oscillatory behavior were also observed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1968
Accession Number
AD0678051

Entities

People

  • W. R. Wilcox

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Composite Materials
  • Dendritic Structure
  • Graphitic Materials
  • Isotherms
  • Low Temperature
  • Materials
  • Melting
  • Temperature Gradients
  • Transition Temperature
  • Zone Melting

Readers

  • Control Systems Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Space