Accession Number:

ADA214646

Title:

Studies of the Structure and Properties of Amorphous a-Zr76Fe24Hx

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS

Report Date:

1989-05-31

Pagination or Media Count:

11.0

Abstract:

The a-Zr76Fe24Hx samples with x or 173 have been shown to remain amorphous after reaction of the glassy alloy with gaseous hydrogen. Magnetic susceptibility and Mossbauer spectroscopy indicate that the electronic structure of the alloy is modified upon hydrogen absorption. Proton spin-lattice relaxation times suggest a strong hyperfine interaction with the iron d-states. The vibrational spectrum of a-Zr7Fe24H173 from inelastic neutron scattering shows hydrogen occupancy in a distribution of tetrahedral interstitial sites. Calorimetry and x-ray diffraction demonstrate that a Zr76Fe24Hx with x 140 irreversibly crystallizes into c-ZrHx and ZrFe2. Keywords Zirconium alloys, Iron, Amorphous alloys, hydrogen, Thermal stability, Metal hydrides, Mossbauer effect, Nuclear magnetic resonance, Glassy alloys.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE