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Detrimental Role Of Hydrogen On The Corrosion Rate Of Zirconium Alloys
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Book Synopsis Detrimental Role of Hydrogen on the Corrosion Rate of Zirconium Alloys by : M. Blat
Download or read book Detrimental Role of Hydrogen on the Corrosion Rate of Zirconium Alloys written by M. Blat and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have suggested that hydride precipitation at the metal/oxide interface could play a detrimental role on the waterside corrosion rate. Nevertheless, the mechanism of that detrimental role is not completely understood, and two hypotheses were investigated to understand the mechanism that controls the role of the hydrides. The first hypothesis is based on a mechanical effect: the hydrides precipitate at the metal/oxide interface and destroy the physical integrity of the "barrier" oxide layer. The second hypothesis is a modification of the transport properties of the oxide grown on the hydrided metal.
Book Synopsis Zirconium in the Nuclear Industry by : Gerry D. Moan
Download or read book Zirconium in the Nuclear Industry written by Gerry D. Moan and published by ASTM International. This book was released on 2002 with total page 891 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation The 41 papers of this proceedings volume were first presented at the 13th symposium on Zirconium in the Nuclear Industry held in Annecy, France in June of 2001. Many of the papers are devoted to material related issues, corrosion and hydriding behavior, in-reactor studies, and the behavior and properties of Zr alloys used in storing spent fuel. Some papers report on studies of second phase particles, irradiation creep and growth, and material performance during loss of coolant and reactivity initiated accidents. Annotation copyrighted by Book News, Inc., Portland, OR.
Book Synopsis Contribution to a Better Understanding of the Detrimental Role of Hydrogen on the Corrosion Rate of Zircaloy-4 Cladding Materials by : D. Noel
Download or read book Contribution to a Better Understanding of the Detrimental Role of Hydrogen on the Corrosion Rate of Zircaloy-4 Cladding Materials written by D. Noel and published by . This book was released on 2000 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics of waterside corrosion of Zircaloy-4 in PWR systems reveal accelerated reaction rates at high burnup levels. In such cases, a thick and dense hydride layer is observed beneath the metal/oxide interface. Laboratory corrosion tests on samples prehydrided using gaseous and cathodic charging techniques clearly indicate a deleterious effect of hydrogen on the corrosion rate. This effect increases with the hydrogen level, particularly in the case of dense hydride layers formed by cathodic charging. The purpose of the present work was to confirm the detrimental effect of hydrogen over a wider range of experimental conditions [steam, primary light water (2 ppm Li, 1000 ppm B), heavy water and air] to determine whether or not it is due to matrix damage during the charging process and to contribute to the understanding of the mechanisms involved.
Book Synopsis Zirconium in the Nuclear Industry by : George P. Sabol
Download or read book Zirconium in the Nuclear Industry written by George P. Sabol and published by ASTM International. This book was released on 1996 with total page 907 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Hydrogen on the Transition Behavior of the Corrosion Rate of Zirconium Alloys by : Makoto Harada
Download or read book The Effect of Hydrogen on the Transition Behavior of the Corrosion Rate of Zirconium Alloys written by Makoto Harada and published by . This book was released on 2008 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three zirconium alloys (Zry-4, Zry-2, and NDA) were corrosion tested at 633 K in pure water and in mixed gas of Ar and oxygen. In both environments, their corrosion rate showed cyclic changes. The time and the weight gain at the transition point changed with their corrosion resistance. In the pure water corrosion test, one test cycle was 600 h, and the cumulative total test duration was as much as 7200 h. After each test cycle, the weight changes and the hydrogen contents were analyzed. The hydrogen pick-up ratio was calculated for each test cycle based on the weight change and the increase of the hydrogen content. The calculated hydrogen pick-up ratios were not constant. They showed periodic changes. In the pre-transition region, the corrosion rate showed a gradual decrease; however, the calculated hydrogen pick-up rate gradually increased. After the transition, in contrast to the increase in the corrosion rate, the calculated hydrogen pick-up rate decreased. The changes of the corrosion rate and the calculated hydrogen pick-up rate for the test interval exhibited an inverse relationship. Transmission electron microscopy (TEM), scanning TEM, energy dispersive x-ray (EDX) spectroscopy, and electron diffraction (ED) pattern analysis of the oxide/metal interface showed the existence of an interface layer that consists of distorted ZrO2 and a sub-oxide. Before the transition, the interface layer was clearly observed. On the other hand, the interface layer disappeared after the transition. The cyclic changes in the corrosion rate were closely related to the interface barrier layer at the oxide/metal interface. The interface layer suppresses the corrosion rate, and the degradation of its barrier property increases the corrosion rate. By comparing the morphology of the oxide/metal interface between the water corrosion samples and the mixed gas oxidation samples, it can be seen that the generated hydrogen in the oxide may have two opposite effects. One is to stabilize the interface layer and to suppress the transport of the oxygen ion, and the other is to degrade the interface layer at the transition and accelerate the generation of the uniform oxide. The effect of the chemical composition on the properties of the oxide-metal interface and the mechanism of the corrosion transition will be discussed.
Download or read book Corrosion of Zirconium Alloys written by and published by . This book was released on 1964 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Hydrogen on the Corrosion Performance of Zirconium Alloys by : Jianfei Wei
Download or read book Effect of Hydrogen on the Corrosion Performance of Zirconium Alloys written by Jianfei Wei and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zirconium in the Nuclear Industry by : George P. Sabol
Download or read book Zirconium in the Nuclear Industry written by George P. Sabol and published by ASTM International. This book was released on 2000 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen Pickup During Corrosion of Zirconium Alloys by : Warren E. Berry
Download or read book Hydrogen Pickup During Corrosion of Zirconium Alloys written by Warren E. Berry and published by . This book was released on 1959 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Silicon, Nitrogen, and Oxygen on the Corrosion and Hydrogen Absorption Performance of Zircaloy-2 by : S. Kass
Download or read book Effects of Silicon, Nitrogen, and Oxygen on the Corrosion and Hydrogen Absorption Performance of Zircaloy-2 written by S. Kass and published by . This book was released on 1963 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corrosion of Zirconium and Zirconium Alloys by : Boris Grigorevich Parfenov
Download or read book Corrosion of Zirconium and Zirconium Alloys written by Boris Grigorevich Parfenov and published by . This book was released on 1969 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstract effect of hydrogen on the corrosion performance of zirconium alloys by : Jianfei Wei
Download or read book Abstract effect of hydrogen on the corrosion performance of zirconium alloys written by Jianfei Wei and published by . This book was released on 2012 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zirconium in the Nuclear Industry by :
Download or read book Zirconium in the Nuclear Industry written by and published by . This book was released on 1998 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research on the Corrosion of Zirconium Alloys in Water and Steam at High Temperature and Pressure by : A. A. Kiselev
Download or read book Research on the Corrosion of Zirconium Alloys in Water and Steam at High Temperature and Pressure written by A. A. Kiselev and published by . This book was released on 1963 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of the Oxidation Rate on the Hydriding of Zirconium Alloys in Gas Atmospheres Containing Hydrogen by : D. W. Shannon
Download or read book Role of the Oxidation Rate on the Hydriding of Zirconium Alloys in Gas Atmospheres Containing Hydrogen written by D. W. Shannon and published by . This book was released on 1963 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen Absorption in Zircaloy During Aqueous Corrosion by : E. Hillner
Download or read book Hydrogen Absorption in Zircaloy During Aqueous Corrosion written by E. Hillner and published by . This book was released on 1964 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Hydrogen in the High Temperature Corrosion of Zirconium and Its Alloys by : D.R. Silvester
Download or read book The Role of Hydrogen in the High Temperature Corrosion of Zirconium and Its Alloys written by D.R. Silvester and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
