Solid State Formation of Nd:Y sub 3 Al sub 5 O sub 12 (Nd:YAG).

Abstract

The formation of 1.1 at. % Nd:Y3Al5O12 (Nd:YAG) from mixed oxide starting powders after heating at 1650 C for 3 hours in air is reported for the first time. Cylindrical billets are produced with fired densities between 65% and 75% of theoretical suitable for use as meltstock for crystal growth by the heat exchanger method (HEM). Conditions for milling of the starting oxide powders to eliminate agglomerates which lead to formation of more volatile Y4Al2O9 and YAlO3 are discussed. A comparison is made betwen mixed oxides and hydrated salts for use as starting materials. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1978
Accession Number
ADA054428

Entities

People

  • Dennis J. Viechnicki
  • Jaroslav L. Caslavsky

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Body Weight
  • Controlled Atmospheres
  • Crystal Growth
  • Crystals
  • Diffraction Analysis
  • Electron Microscopes
  • Heat Energy
  • Heat Exchangers
  • Materials
  • Mechanics
  • Metal Oxides
  • New York
  • Oxides
  • Scanning Electron Microscopes
  • Scattering
  • United States

Fields of Study

  • Materials science

Readers

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