Accession Number:

ADA371038

Title:

Observations of the Oxidation of Pure and Sputtered Tantalum Via Dilatometry.

Descriptive Note:

Technical rept.

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Report Date:

1999-04-08

Pagination or Media Count:

15.0

Abstract:

The oxidation of pure and sputtered tantalum foils was observed via dilatometry and weight gain measurements. Specimens were tested in both helium and laboratory air at isothermal temperatures ranging from 300 deg C to 850 deg C. Based on weight gain measurements of pure tantalum, it is apparent that oxygen saturation occurred. The activation energy for both the pure and sputtered tantalum was consistent with the activation energy for absorption rather than interstitial or grain boundary diffusion. This investigation is the precursor to subsequent dilatometry investigations on the effects on hydrogen in tantalum at elevated temperatures.

Subject Categories:

  • Meteorology
  • Metallurgy and Metallography
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE