AN INVESTIGATION OF THE STRUCTURE AND PHASE COMPOSITION OF A SILICOON DIFFUSION COATING FOR NIOBIUM

Abstract

An investigation was made of the structure and phase composition of technical Nb saturated with solid phase Si for 30 min to 15 hrs at temperatures of 1100 to 1300 C. The diffusion coating was analyzed by metallographic analysis and radiographic procedures, and an x-ray spectrum analysis was made. The microhardness was 1050 kg/sq mm. The weight gain increased exponentially as it was exposed to higher temperatures and greater duration of the saturation process. The parameters of diffusion of Si into Nb were computed. At saturation temperatures of up to 1300 C, phases of the following composition were developed on the surface of Nb: NbSi2, Nb5Si3, and Nb4Si.

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Document Details

Document Type
Technical Report
Publication Date
Aug 28, 1961
Accession Number
AD0265674

Entities

People

  • D. A. Prodkoshkin
  • P. M. Arzhanyy
  • R. M. Volkova

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Binary Alloys
  • Body Weight
  • Boundaries
  • Diffusion
  • Experimental Data
  • Government Procurement
  • Governments
  • Heat Of Activation
  • High Temperature
  • Hydrofluoric Acid
  • Metals
  • Phase
  • Refractory Metals
  • Saturation
  • Solid Phases
  • X Ray Spectra
  • X Rays

Fields of Study

  • Physics

Readers

  • Mathematics or Statistics
  • Powder metallurgy of Titanium alloys.