Site specific dependencies of hydrogen concentrations in zirconium hydrides
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in: Scripta Materialia, Jahrgang 158.2019, Nr. 1 January, 2019, S. 136-140.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Site specific dependencies of hydrogen concentrations in zirconium hydrides
AU - Tunes, Matheus A.
AU - Silva, Chinthaka M.
AU - Edmondson, Philip D.
PY - 2019
Y1 - 2019
N2 - Zircaloy-4 specimens were H-charged up to 1230 wppmH. Intra-, inter- and trans-granular zirconium hydride precipitates (or ZrH2−x where 1/(2 − x) is the Zr/H molar ratio) were observed throughout the α-Zr matrix. Transmission Electron Microscopy and electron diffraction confirmed that the ZrH2−x precipitates were face-centred cubic structures consistent with the δ-ZrH2−x phase. Electron Energy Loss Spectroscopy analysis of the δ-ZrH2−x precipitates at three different nucleation spots displayed shifts in the plasmon energy loss peaks that can be attributed to local variations of the H content of the δ-ZrH2−x precipitates rather than the presence of different ZrH2−x phases as has previously been assumed.
AB - Zircaloy-4 specimens were H-charged up to 1230 wppmH. Intra-, inter- and trans-granular zirconium hydride precipitates (or ZrH2−x where 1/(2 − x) is the Zr/H molar ratio) were observed throughout the α-Zr matrix. Transmission Electron Microscopy and electron diffraction confirmed that the ZrH2−x precipitates were face-centred cubic structures consistent with the δ-ZrH2−x phase. Electron Energy Loss Spectroscopy analysis of the δ-ZrH2−x precipitates at three different nucleation spots displayed shifts in the plasmon energy loss peaks that can be attributed to local variations of the H content of the δ-ZrH2−x precipitates rather than the presence of different ZrH2−x phases as has previously been assumed.
KW - Electron Energy Loss Spectroscopy
KW - Jahn-Teller effect
KW - Transmission electron microscopy
KW - Zirconium hydrides
UR - http://www.scopus.com/inward/record.url?scp=85052854127&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2018.08.044
DO - 10.1016/j.scriptamat.2018.08.044
M3 - Article
AN - SCOPUS:85052854127
VL - 158.2019
SP - 136
EP - 140
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 1 January
ER -
