Published April 1989 | Version v1
Journal article Metadata-only

Effect of surface impurities on the hydrogen recombination coefficient of first-wall materials

Creators

  • 1. Tokyo Univ. (Japan). Nuclear Engineering Research Lab.
  • 2. Tokyo Univ. (Japan). Faculty of Engineering

Description

The ''hydrogen recombination coefficient'' kR was evaluated for such metals as stainless steel, vanadium and nickel from experimental data of the permeation rate of ion- and gas-driven hydrogen isotopes. The measured values of kR were found to decrease with increasing the surface concentration of certain impurity elements; oxygen for stainless steel, sulfur for vanadium and nickel as was determined by Auger electron spectroscopy. They were also compared to theoretical models and the role of surface impurities on the hydrogen recombination process was discussed with respect to these models. (orig.)

Additional details

Publishing Information

Journal Title
Journal of Nuclear Materials
Journal Volume
162-164
Series
J. Nucl. Mater.
Journal Page Range
1071-1076
ISSN
0022-3115
CODEN
JNUMA

Conference

Title
8. international conference on plasma surface interactions in controlled fusion devices (PSI-8).
Dates
2-6 May 1988.
Place
Juelich (Germany, F.R.).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
20067168
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ADSORPTION; DESORPTION; FIRST WALL; HYDROGEN; IMPURITIES; NICKEL; OXYGEN; PERMEABILITY; RECOMBINATION; RECYCLING; STAINLESS STEELS; SULFUR; VANADIUM
Descriptors DEC
ALLOYS; CARBON ADDITIONS; ELEMENTS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; METALS; NONMETALS; STEELS; THERMONUCLEAR REACTOR WALLS; TRANSITION ELEMENTS