Hydrogen Absorption Mechanism of Zirconium Alloys Based on Characterization of Oxide Layer

2011 ◽  
pp. 401-432
Author(s):  
K. Une ◽  
K. Sakamoto ◽  
M. Aomi ◽  
J. Matsunaga ◽  
Y. Etoh ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Hydrogen Absorption ◽  
Zirconium Alloys ◽  
Absorption Mechanism

Hydrogen Absorption Mechanism of Zirconium Alloys Based on Characterization of Oxide Layer

2011 ◽  
Vol 8 (5) ◽  
pp. 102950 ◽  
Author(s):  
K. Une ◽  
K. Sakamoto ◽  
M. Aomi ◽  
J. Matsunaga ◽  
Y. Etoh ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Hydrogen Absorption ◽  
Zirconium Alloys ◽  
Absorption Mechanism

Role of Iron for Hydrogen Absorption Mechanism in Zirconium Alloys

2008 ◽  
pp. 349-349-18s ◽  
Author(s):  
K Kakiuchi ◽  
N Itagaki ◽  
T Furuya ◽  
A Miyazaki ◽  
Y Ishii ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Zirconium Alloys ◽  
Absorption Mechanism

Role of Iron for Hydrogen Absorption Mechanism in Zirconium Alloys

2004 ◽  
Vol 1 (10) ◽  
pp. 12352 ◽  
Author(s):  
K Kakiuchi ◽  
N Itagaki ◽  
T Furuya ◽  
A Miyazaki ◽  
Y Ishii ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Zirconium Alloys ◽  
Absorption Mechanism

Control of hydrogen absorption by nickel films obtained upon magnetic spraying of zirconium alloy using the thermoEMF method

2020 ◽  
Vol 86 (8) ◽  
pp. 32-37
Author(s):  
V. V. Larionov ◽  
Xu Shupeng ◽  
V. N. Kudiyarov
Keyword(s):  
Magnetron Sputtering ◽  
Hydrogen Concentration ◽  
Hydrogen Absorption ◽  
Zirconium Alloy ◽  
Hydrogen Adsorption ◽  
Zirconium Alloys ◽  
Nickel Film ◽  
Protective Film ◽  
Nickel Films ◽  
Hydrogen Penetration

Nickel films formed on the surface of zirconium alloys are often used to protect materials against hydrogen penetration. Hydrogen adsorption on nickel is faster since the latter actively interacts with hydrogen, oxidizes and forms a protective film. The goal of the study is to develop a method providing control of hydrogen absorption by nickel films during vacuum-magnetron sputtering and hydrogenation via measuring thermoEMF. Zirconium alloy E110 was saturated from the gas phase with hydrogen at a temperature of 350°C and a pressure of 2 atm. A specialized Rainbow Spectrum unit was used for coating. It is shown that a nickel film present on the surface significantly affects the hydrogen penetration into the alloy. A coating with a thickness of more than 2 μm deposited by magnetron sputtering on the surface of a zirconium alloy with 1% Nb, almost completely protects the alloy against hydrogen penetration. The magnitude of thermoemf depends on the hydrogen concentration in the zirconium alloy and film thickness. An analysis of the hysteresis width of the thermoEMF temperature loop and a method for determining the effective activation energy of the conductivity of a hydrogenated material coated with a nickel film are presented. The results of the study can be used in assessing the hydrogen concentration and, hence, corrosion protection of the material.

Visualization and characterization of localized outgassing position on surface-treated specimens: Chromium oxide layer on stainless steel

2019 ◽  
Vol 492 ◽  
pp. 280-284
Author(s):  
Naoya Miyauchi ◽  
Tomoya Iwasawa ◽  
Taro Yakabe ◽  
Masahiro Tosa ◽  
Toyohiko Shindo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Chromium Oxide ◽  
Chromium Oxide Layer

scholarly journals Micro/Nano-Structural Transition and Hydrogen Absorption Mechanism in Mg/Cu Super-Laminate Composites

2015 ◽  
Vol 79 (12) ◽  
pp. 644-650 ◽  
Author(s):  
Koji Tanaka ◽  
Hiroyuki T. Takeshita ◽  
Ho Shin ◽  
Kosuke Kurumatani ◽  
Tetsu Kiyobayashi ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Structural Transition ◽  
Absorption Mechanism ◽  
Laminate Composites

Determination of the Hydrogen Concentration in Zr-2.5Nb Alloy by a Resonant Ultrasound Spectroscopy

2006 ◽  
Vol 321-323 ◽  
pp. 1576-1579
Author(s):  
Yong Moo Cheong ◽  
Young Suk Kim
Keyword(s):  
Hydrogen Concentration ◽  
Zirconium Alloy ◽  
Nuclear Reactor ◽  
Zirconium Alloys ◽  
Resonant Ultrasound Spectroscopy ◽  
Heavy Water Reactor ◽  
Resonant Ultrasound ◽  
Non Destructive

Zirconium alloys are used for many applications in nuclear components, such as the pressure tube material in a pressurized heavy water reactor, nuclear fuel cladding, etc. One of the problems during the operation of a nuclear reactor is the degradation of the zirconium alloys, which is due to an increase of the hydrogen content in the zirconium alloy. Therefore a non-destructive determination of the hydrogen concentration in zirconium alloy is one of the important issues that need to be addressed. The resonant ultrasound spectroscopy (RUS) technique is evaluated for a characterization of the hydrogen concentration in Zr-2.5Nb alloy. Referring to the terminal solid solubility for dissolution (TSSD) of Zr-2.5Nb alloy, the plot of the mechanical damping coefficient (Q-1) versus the temperature or the deviation of the resonant frequency for the temperature (df/dT) versus the temperature was correlated for the hydrogen concentration in Zr-2.5Nb alloy. It was found that the temperature at an abrupt change of the slope can be correlated with the hydrogen concentration of the Zr-2.5Nb alloy.

Fabrication and Characterization of Heterojunction Based on a Copper Oxide Layer

2021 ◽  
Author(s):  
Oleksii Diachenko ◽  
Anatoliy Opanasyuk ◽  
Tetiana Protasova ◽  
Patrik Novak ◽  
Jaroslav Kovac
Keyword(s):  
Copper Oxide ◽  
Oxide Layer ◽  
Fabrication And Characterization
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