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HYDROGEN DIFFUSION [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2003-07-02

English

Subject field(s)
  • Fuel Cells (Electr.)
DEF

[Conductive material in a fuel cell] which allows the diffusion of hydrogen and oxygen over both sides of the MEA [Membrane electrode assembly], whilst also filtering out water produced on the catalyst layer surface.

CONT

A bipolar lithium/sulfide battery ... employs disk-shaped voltaic cells assembled into a series-connected stack in which adjacent cells share a common current collector, called the bipolar plate.

French

Domaine(s)
  • Piles à combustible (Électricité)
CONT

Le deuxième rôle [des plaques bipolaires] est d'être un collecteur de courant. Les électrons produits par l'oxydation de l'hydrogène sortent par l'anode, traversent le support d'anode et ensuite la plaque. Ils quittent ensuite la pile et alimentent le circuit extérieur.

Spanish

Save record 1

Record 2 1995-09-13

English

Subject field(s)
  • Heat Treatment of Metals
  • Surface Treatment of Metals
DEF

In electroplating, heat treatment applied to a work piece to achieve alloying or inter-metallic compound formation between two or more coatings.

OBS

Thermal aftertreatments frequently applied to work pieces with metallic coatings, involving diffusion into or out of the coating or the basis metal(such as removal of hydrogen etc.), are not normally designated, in surface treatment terminology, diffusion processes.

OBS

Term and definition standardized by ISO.

French

Domaine(s)
  • Traitement à chaud des métaux
  • Traitements de surface des métaux
DEF

En électrodéposition, traitement thermique appliqué à une pièce pour obtenir la formation d'un alliage ou d'un composé intermétallique entre revêtement et métal de base ou entre deux ou plusieurs couches de revêtement.

OBS

Les traitements thermiques complémentaires, fréquemment appliqués à des pièces revêtues, et qui entraînent une diffusion à l'intérieur ou à l'extérieur du revêtement ou du métal de base (tels que l'élimination de l'hydrogène, etc.) ne sont pas normalement appelés «traitements de diffusion» dans la terminologie des traitements de surface.

OBS

Terme et définition normalisés par l'ISO.

Spanish

Save record 2

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