In-situ Preparation of Polymer-Coated Zirconia Nanoparticles by Decomposition of Zirconium-Tert-Butoxide

Abstract

Nanocrystalline zirconia particles coated with polymers have been prepared by a two step Chemical Vapor Synthesis process using a hot wall reactor to synthesize the nanocrystalline ceramic core and a subsequent RF plasma reactor for the polymer coating. The polymer coating is built up of organic byproducts of the pyrolysis of the zirconia precursor. By using continuous and pulsed plasma deposition and variation of the plasma parameters such as RF power, period and duty-cycle the structure and thickness of the polymer coating can be influenced. Typical particle radii are in the range of 3 to 4 nm with radii of the ceramic core in the range of 2 nm and a coating thickness in the range of 1 to 2 nm. The powders have been characterized by FT-IR, XRD, BET and HRTEM. Consequences for the dispersibility are reported.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2003
Accession Number
ADP014292

Entities

People

  • Horst Hahn
  • Johannes Seydel
  • Michael Schallehn
  • Volker Lorenzen

Organizations

  • Technical University of Darmstadt

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Electron Microscopy
  • Gas Flow
  • Generators
  • Grain Size
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Microscopes
  • Nanoparticles
  • Particle Size
  • Particles
  • Polymer-Matrix Nanocomposites
  • Powders
  • Scattering
  • Spectra
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Surface Coatings Technology.
  • Thin Film Deposition Science.

Technology Areas

  • Biotechnology