Continuous Solvothermal Synthesis and Surface Treatment for Improved and Scalable Processing of Ultra High Temperature Ceramic (UHTC) Nanopowders

Abstract

The project attempted to develop a wet, environmentally-controlled, continuous synthesis/processing route for high-puritynon-agglomerated boride, carbide, and nitride nanoparticles of preferred transition metal elements such as Zr, Hf, and Ta. The proposed generic approach consisted of solvothermal reactions in pressurized vessels. The Approach was abandoned after 2 years due to the presence of large carbon content, derived from the organic solvents. The revised objective was to assess the potential of 2 new polymeric precursors to boron carbonitride and boron nitride as weak interface coatings forSiC/SiC composites. This approach was found to be promising and deserves further evaluation in a systematic mode.

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Document Details

Document Type
Technical Report
Publication Date
Jun 13, 2017
Accession Number
AD1038493

Entities

People

  • Yigal Blum

Organizations

  • SRI International

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Body Weight
  • Ceramic Materials
  • Ceramic Matrix Composites
  • Chemical Reaction Properties
  • Chemical Synthesis
  • Chemistry
  • Composite Material Fabrication
  • Composite Materials
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Nanoparticles
  • Organic Chemistry

Readers

  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.
  • Theoretical Analysis.

Technology Areas

  • Biotechnology