scholarly journals ``In-situ'' spectro-electrochemical studies of radionuclide-contaminated surface films on metals

2000 ◽  
Author(s):  
C A Melendres ◽  
S Mini ◽  
A N Mansour
Keyword(s):  
Surface Films ◽  
Electrochemical Studies

scholarly journals Multi-Stage Redox Systems Based on Dicationic P-Containing Polycyclic Aromatic Hydrocarbons

2019 ◽  
Author(s):  
Thomas Delouche ◽  
Antoine Vacher ◽  
Elsa Caytan ◽  
Thierry Roisnel ◽  
Boris Le Guennic ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Organic Radical ◽  
Electrochemical Studies ◽  
Redox Systems ◽  
Redox States ◽  
Multi Stage ◽  
Polycyclic Aromatic ◽  
The Impact

In this communication, we report the straightforward<br>synthesis of unprecedented electron-acceptors based on dicationic P-containing PAHs (Polycyclic Aromatic Hydrocarbons) where two phosphoniums are connected through various PAHs backbones. The impact of pi-extension on both the optical and redox properties is investigated using a joint experimental/theoretical approach.<br>Finally, (spectro)-electrochemical studies prove that these<br>compounds possess three redox states and EPR studies confirms the in situ formation of an organic radical.

In-situ Measurements Of Ocean Surface Films Using A Small Buoy

2005 ◽  
Author(s):  
V. Verma ◽  
C. Teague ◽  
D. Napolitano ◽  
J. Vesecky
Keyword(s):  
Ocean Surface ◽  
In Situ Measurements ◽  
Surface Films

In Situ Polymerization of Aniline Sulfonic Acid Derivatives into LDH Interlamellar Space Probed by ESR and Electrochemical Studies

2005 ◽  
Vol 17 (2) ◽  
pp. 373-382 ◽  
Author(s):  
El Mostafa Moujahid ◽  
Marc Dubois ◽  
Jean-Pierre Besse ◽  
Fabrice Leroux
Keyword(s):  
Sulfonic Acid ◽  
In Situ Polymerization ◽  
Electrochemical Studies ◽  
Interlamellar Space

Corrosion of Ti99.8-Pd Under Gamma Irradiation in MgC12-Rich Brine

1997 ◽  
Vol 506 ◽  
Author(s):  
E. Smailos ◽  
D. Schild ◽  
K. Gompper
Keyword(s):  
Surface Layer ◽  
Field Experiments ◽  
Surface Films ◽  
General Corrosion ◽  
Experimental Conditions ◽  
Test Conditions ◽  
Strong Candidate ◽  
Main Component ◽  
Container Material

ABSTRACTThe combined influence of gamma radiation (10 Gy/h) and high temperature (150 °C) on the corrosion of the promising HLW container material Ti99.8-Pd was investigated in an MgCl2-rich brine, and the corrosion surface films formed were characterized by XPS. For comparison, specimens without irradiation were also examined.Under the test conditions used, the alloy Ti99.8-Pd is resistant to local corrosion and its general corrosion is negligible low. The thin corrosion films formed on the surface of unirradiated specimens and in the crevices of specimens exposed to radiation consist of TiO2. However, outside the crevices of irradiated specimens, a surface layer consisting of Mg (main component of the brine) and Si (impurity in the brine) oxide is built up over the TiO2 layer. Comparable TiO2 layer thicknesses (30 - 65 nm, depending on the experimental conditions) are found for unirradiated and irradiated laboratory specimens. The TiO2 layer formed on the in-situ corrosion specimens (33 nm / 5.3 years) is thinner than that of the laboratory specimens (58 nm / 191 days) indicating less aggressive conditions in the field experiments. In view of these results, the alloy Ti99.8-Pd continues to be considered as a strong candidate container material and will be further investigated.

Sign in / Sign up

Export Citation Format

Share Document