The Experts below are selected from a list of 94443 Experts worldwide ranked by ideXlab platform
J. C. Wren - One of the best experts on this subject based on the ideXlab platform.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
K. Daub - One of the best experts on this subject based on the ideXlab platform.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
Graça Simões De Carvalho - One of the best experts on this subject based on the ideXlab platform.
-
Stainless Steel Corrosion products cause alterations on mouse spleen cellular populations
Journal of Materials Science: Materials in Medicine, 1995Co-Authors: Rosa Branca Tracana, Maria De Lourdes Pereira, A. M. Abreu, J. P. Sousa, Graça Simões De CarvalhoAbstract:Stainless Steel is a metallic biomaterial commonly used in orthopaedic surgery. In this study we looked at the effects of stainless Steel Corrosion products on spleen, in order to evaluate their potential immunotoxicological effects. For this purpose stainless Steel, type AISI 316L, was electrochemicallydissolved in a physiological salt solution. The final solution, containing 490 μg/ml Fe, 224 μg/ml Cr and 150 μg/ml Ni, was injected subcutaneously in mice. After several periods of time (4, 10 and 14 days) spleens were removed and analysed for: (a) their contents in Fe, Cr and Ni, (b) histological alterations, (c) enumeration of cellular populations. Results showed that stainless Steel Corrosion products accumulated in spleen, caused histological alterations, and induced changes in cellular populations. When compared to chromium and nickel, iron was the metal ion preferentially accumulated in spleen. The increase of the multinucleated giant cell population was accompanied by depletion of lymphocyte populations. This study indicates that stainless Steel Corrosion products can spread systemically and accumulate in spleen inducing histological and cellular alterations which may give rise to immunotoxicological consequences.
-
Mouse inflammatory response to stainless Steel Corrosion products
Journal of Materials Science: Materials in Medicine, 1994Co-Authors: Rosa Branca Tracana, J. P. Sousa, Graça Simões De CarvalhoAbstract:Corrosion occurs regularly following long-term implantation of stainless Steel. Little is known about the inflammatory and immunological potential of stainless Steel Corrosion products. AISI 316L stainless Steel was anodically dissolved in a physiologically solution, HBSS, through a chronoamperometric process by imposing an external constant current of 0.5 mA. The solution, containing 245 μg of Fe, 112 μg of Cr, 75 μg of Ni and 13 μg of Mo, was injected in the peritoneal cavity of male C57BL/6 mice. Five animals were used per survival period of time: 4, 16, 24, and 48 h, 1, 2, 4, 8 and 16 weeks. Three control mice per survival period of time were injected with HBSS. For each assay, peritoneal samples were analysed not only for the total number of cells but also for the percentages of macrophages, lymphocytes and polymorphonuclear (PMN) cells, which were estimated by differential counting on Wright-stained cytocentrifuge preparations. Our follow-up study showed that stainless Steel Corrosion products induced an acute inflammatory response for a period of one week as demonstrated by the influx of PMN cells and macrophages. In contrast neither a chronic inflammation nor an immune response was observed indicating that the stainless Steel solution caused a minor tissue response.
Xueyuan Zhang - One of the best experts on this subject based on the ideXlab platform.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
James J Noel - One of the best experts on this subject based on the ideXlab platform.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
-
Effects of γ-radiation versus H2O2 on carbon Steel Corrosion
Electrochimica Acta, 2010Co-Authors: K. Daub, Xueyuan Zhang, James J Noel, J. C. WrenAbstract:The effect of ionizing radiation on Steel Corrosion is an important materials issue in nuclear reactors. In the presence of ionizing radiation water decomposes into both oxidizing and reducing species (e.g., OH, H2O2, O2−) whose net interactions with Steels are not fully understood. The effect of radiation on the Corrosion kinetics of carbon Steel has been studied at pH 10.6 and room temperature, using electrochemical and chemical speciation analyses. The present study investigates the effect of γ-radiation on carbon Steel Corrosion and compares it with that of chemically added H2O2, which is considered to be the key radiolytically produced oxidant at room temperature. Various oxide films were pre-grown potentiostatically on carbon Steel electrodes, and then exposed to either γ-radiation at a dose rate of ∼6.8 kGy h−1 or to H2O2 in a concentration range of 10−6 to 10−2 M. The Corrosion kinetics were studied by monitoring the Corrosion potential (ECORR), and periodically performing linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements.
