Hydrogen trapping by solute atoms in Nb--Mo(3 at. %) alloys as observed by the channeling method

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.57· OSTI ID:6759453

Yagi, E; Nakamura, S; Kano, F; Kobayashi, T; Watanabe, K; Fukai, Y; Matsumoto, T

In order to elucidate the mechanism of the enhancement of the terminal solubility for hydrogen (TSH) in Nb by alloying with undersized Mo atoms, the state of hydrogen was studied by the channeling method using a nuclear reaction /sup 1/H(/sup 11/B, ..cap alpha..)..cap alpha cap alpha.. in Nb--Mo(3 at. %) alloys. At room temperature H atoms are located at sites displaced from tetrahedral (T) sites by about 0.6 A towards the nearest-neighbor lattice points, while at 373 K they are at T sites. These results give direct evidence for trapping of hydrogen by Mo atoms and strongly support the trapping model for the enhancement of the TSH in the low-concentration region of Mo atoms.

• Research Organization: The Institute of Physical and Chemical Research, Wako-shi, Saitama 351-01, Japan
• OSTI ID: 6759453
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 39:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HYDROGEN ADDITIONS
SOLUBILITY
MOLYBDENUM ALLOYS
CRYSTAL DEFECTS
NIOBIUM BASE ALLOYS
BORON 11 BEAMS
CHANNELING
TRAPPING
ALLOYS
BEAMS
CRYSTAL STRUCTURE
ION BEAMS
NIOBIUM ALLOYS
360104* - Metals & Alloys- Physical Properties