X-RAY DIFFRACTION STUDY OF THE OXIDATION OF TA, NB, AND SOME NB ALLOYS AT ATMOSPHERIC PRESSURE.

Abstract

The oxidation characteristics of niobium and tantalum powders and niobium, tantalum and certain niobium alloys were determined by x-ray diffraction techniques. The various color changes in the suboxide range of the powders during air oxidation were investigated. Diffraction data is given for the low temperature alpha and for the high temperature beta Nb205 phases. No new gamma phase of Nb205 formed after extensive heating at 800C. Oxidation rates are reported for Nb and Ta sheet and three Nb alloys: CB-752 (10 W, 2.5 Zr), D-43 (10 W, 1 Zr), and D-36 (10 Ti, 5 Zr). The D-36 alloy exhibited the greatest resistance to oxidation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1965
Accession Number
AD0626990

Entities

People

  • Robert Nunemacher

Organizations

  • University of Dayton

Tags

DTIC Thesaurus Topics

  • Alloys
  • Barometric Pressure
  • Diffraction
  • High Temperature
  • Low Temperature
  • Niobium
  • Niobium Alloys
  • Oxidation
  • Resistance
  • Tantalum
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Powder metallurgy of Titanium alloys.