Ultrastructure Processing of Advanced Materials.

Abstract

This Final Technical Report covering the three-year period from December 1, 1990 to November 30, 1993 presents a summary of research performed on two classes of materials obtained by the sol-gel method. Single crystal thin films were successfully prepared for the, ferroelectric materials KNbO3 and LiNbO3. A new phenomenon, Amorphous Ferroelectricity was discovered. Organically Modified Silicates (Ormosils) were further developed to give enhanced high temperature rubbery elasticity. A theory was developed for the calculation of the hardness of Ormosils. By modifying the Ormosils with Ti, Zr and Al to replace Si, Vickers Hardness of over 200 Kg/sq mm 2 was obtained. This is about ten times that of the hardness of the hardest transparent organic plastics. Sol- Gel Science, Ferroelectrics, Organically modified ceramics.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1994
Accession Number
ADA278285

Entities

People

  • John Douglas MacKenzie

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Ceramic Materials
  • Composite Materials
  • Crystals
  • Electrical Properties
  • Ferroelectric Materials
  • Films
  • High Temperature
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Optical Materials
  • Silica Glass
  • Single Crystals
  • Thin Films

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.
  • Powder metallurgy of Titanium alloys.