The Use of Hydrogen Getters for Prevention of Hydrogen Embrittlement in Zirconium-Alloy Fuel Cans

W. Spalthoff; H. Wilhelm

doi:10.1520/STP43837S

SYMPOSIA PAPER Published: 01 January 1969

STP43837S

The Use of Hydrogen Getters for Prevention of Hydrogen Embrittlement in Zirconium-Alloy Fuel Cans

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For prevention of hydrogen embrittlement in zirconium-alloy fuel cans it is proposed to insert yttrium as a hydrogen getter inside the fuel can. An evaluation of hydrogen decomposition-pressure measurements of all metal hydrides at question shows that in the range 300 to 500 C, yttrium has the highest affinity to hydrogen. At 300 C the hydrogen in yttrium dihydride is in equilibrium with 1 ppm per weight of hydrogen solved in alpha-phase zirconium. These calculations so far are confirmed by diffusion and corrosion experiments.

Author Information

Spalthoff, W.

Technological Dept., Gesellschaft für Kernenergieverwertung in Schiffbau und Schiffahrt, Geesthacht-Tesperhude, Germany

Wilhelm, H.

Technological Dept., Gesellschaft für Kernenergieverwertung in Schiffbau und Schiffahrt, Geesthacht-Tesperhude, Germany

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Details

Developed by Committee: B10

Pages: 338–344

DOI: 10.1520/STP43837S

ISBN-EB: 978-0-8031-6037-8

ISBN-13: 978-0-8031-6191-7

The Use of Hydrogen Getters for Prevention of Hydrogen Embrittlement in Zirconium-Alloy Fuel Cans

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