In-situ investigations of the hydrogen uptake of zirconium alloys during high temperature steam oxidation - 6.6 STP-2016-0041
- Karlsruhe Institute of Technology, Institute for Applied Materials, P.O.Box 3640, D-76021 Karlsruhe (Germany)
- Technische Universitaet Muenchen, FRM II and Physik-Department E21, James-Franck-Str. 1, D- 85748 Garching (Germany)
- Neutron Imaging and Activation Group, Paul Scherrer Institut - PSI, CH-5232, Villigen (Germany)
The hydrogen uptake during steam oxidation of Zircaloy-4 and E110 was investigated in-situ in the temperature range of 1000 to 1300 deg. C. The procedure to determine hydrogen concentrations from the neutron radiographs measured is explained in detail. Very fast hydrogen absorption (<10 s) was observed directly after start of the steam injection. The maximal hydrogen concentration reached increases with increasing temperature. After this first fast hydrogen uptake a slight release of hydrogen was observed. The hydrogen concentration depends on time with the power of -1/8. An enhanced hydrogen uptake occurs if oxidation switches into the breakaway mode. The hydrogen concentration increases by nearly one order of magnitude. (authors)
- Research Organization:
- ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA, 19428-2959 (United States)
- OSTI ID:
- 22788399
- Resource Relation:
- Conference: 18. International Symposium on Zirconium in the Nuclear Industry, Hilton Head, SC (United States), 15-19 May 2016; Other Information: Country of input: France; 37 refs.
- Country of Publication:
- United States
- Language:
- English
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