The Role of Additives in the Densification of Nitrogen Ceramics.

Abstract

The role of additives magnesia, yttria, ceria and zirconia in the densification of silicon nitride and b-sialon is investigated with the objective of improving the high-temperature mechanical and chemical properties of these nitrogen ceramics. Each of the oxide additions reacts with surface silica and some of the nitride to give an oxynitride liquid that promotes densification by the successive stages of particle rearrangement and solution-precipitation.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA058807

Entities

People

  • K. H. Jack

Organizations

  • Newcastle University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Body Weight
  • Ceramic Materials
  • Chemical Analysis
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Crystal Chemistry
  • Crystal Structure
  • Electron Microscopy
  • Heat Treatment
  • Magnesium Compounds
  • Materials
  • Materials Science
  • Oxidation Resistance
  • Silicon Carbide
  • Standards

Fields of Study

  • Materials science

Readers

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