NIOBIUM IODIDE AND SOME OF ITS PROPERTIES

Abstract

The apparatus and techniques for the purification of Nb by the thermal dissociation of its iodides are described. Twenty-five thermal dissocia ion experiments were performed during which the temperature in various sections of theAPPARATUS WAS VARIED AND THE PRODUCTS RESULTING WERE COMPARED ON THE BASIS OF HARDNESS AND MICROSTRUCTURE. As a result of these experiments, it was concluded that (1) the thermal dissociation of volatile niobium iodides was possible, (2) the decrease in hardness and the disappearance of a second phase of niobium iodide indicated that purification was being accomplished, (3) the crystallization from the gaseous phase was temperature dependent on the filament temperature, and (4) the optimum conditions were established for the apparatus.

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Document Details

Document Type
Technical Report
Publication Date
Jul 06, 1961
Accession Number
AD0262605

Entities

People

  • A. I. Yevstyukhin
  • G. A. Leontyev
  • V. S. Yemelyanov

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemical Industry
  • Construction Materials
  • Crystallization
  • Crystals
  • Dissociation
  • Electron Beams
  • Filaments
  • Government Procurement
  • Hardness
  • Materials
  • Measurement
  • Mechanical Properties
  • Metals
  • Phase
  • Tensile Strength
  • Transformers
  • Vapor Pressure

Fields of Study

  • Physics

Readers

  • Organic Chemistry
  • Powder metallurgy of Titanium alloys.