Microstructural analysis and high-temperature impedance spectroscopy
Microstructural and high temperature impedance spectroscopy study of Ba6MNb9O30 (M=Ga, Sc, In) relaxor dielectric ceramics with tetragonal tungsten bronze structure
... 3.1. Microstructural analysis for Ba 6 MNb 9 O 30 (M = Ga, Sc, In) ceramics In order to correlate to the electrical properties, SEM was used to determine the grain size and morphology and ...
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Electrochemical Impedance Spectroscopy Investigation of Alloy Inconel 718 in Molten Salts at High Temperature
... As it can be seen on the X-ray mappings shown on Fig. 9, this oxide layer corresponds to a corrosion product formed mainly by O, Cr and V, and it may be to a compound including chromium oxide Cr 2 O 3 , the most common ...
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Corrosion behaviour of zirconium alloys in high temperature aqueous environment by electrochemical impedance spectroscopy
... The impedance response of pre-transition oxide is shown in Figure ...Initial impedance response was recorded immediately after the immersion, and two distinct time con- stants were ...At high ...
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Effect of High Temperature Treatment on Aqueous Corrosion of Low Carbon Steel by Electrochemical Impedance Spectroscopy
... of temperature effects on the corrosion behavior of structural materials in general lies in the nanostructure developments that accompany such tem- perature treatments, and other extreme conditions such as ...
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Correlating Microstructural Development And Failure Mechanisms To Photo Stimulated Luminescence Spectroscopy And Electrochemical Impedance Spectroscopy In Thermal Barrier Coatings
... This is a novel technique derived from D-Gun™ process and recently has a gained an application in deposition of MCrAlY coatings. This process yields microstructure similar to that of LPPS/VPS process but with better ...
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Impedance Spectroscopy of Ba5GdTi3V7O30
... a high- temperature solid-state reaction ...diffraction analysis suggests the formation of sin- gle-phase compound with orthorhombic ...of temperature on impedance parameters was ...
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Effect of Temperature on Electrochemical Properties of Zircaloy-4 by AC Impedance Spectroscopy 19305
... “high temperature” during normal operation temperature of commercial reactors around 300 °C, rich studies about out-of-pile waterside corrosion rate of zirconium alloys have been accumulated by the ...
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Microfluidic Electrical Impedance Spectroscopy
... 4 While the field of microfluidics possess great potential to impact multiple inter- disciplinary fields, microfluidic devices in general also come with several drawbacks. While microfluidic analyzers may have lower cost ...
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Analysis of Impedance Spectroscopy Data—Finding the Best System Function
... A new taxonomy of all the possible circuit models that are based on RC lumped elements is given. The taxonomy divides the various circuit models into groups of increasing complexity. Its order and family, where for RC ...
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Impedance spectroscopy of changes in skin-electrode impedance induced by motion
... the impedance waveforms, surface biopo- tentials, and the motion pattern was carried ...the impedance waveforms for each frequency were removed using a 0.2 Hz high-pass filter (HPF) to provide the ...
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Optimized Perovskite Electrocatalyst for Bifunctional Air Electrode by Impedance Spectroscopy Analysis
... electrochemical impedance spectroscopy (EIS). The impedance spectra are analyzed by an equivalent circuit containing an electrode intrinsic resistance at the high frequency and kinetic ...
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Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review
... (Warburg impedance) and the plot is essentially a straight line with slope 45 ◦ ...At high frequencies instead, where diffusion time constant is much longer than the signal period, the plot is described by ...
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High temperature oxidation of a Cu-Ni – based cermet: kinetic and microstructural study
... Five distinct zones have been identified in the oxidized samples, C, P 1 , P 2 , E 2 and E 1 . Gold markers allowed to determine that the two outmost layers (E 2 : nickel oxide and E 1 : copper oxide) grew by external ...
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High temperature oxidation of a Cu-Ni based cermet: kinetic and microstructural study
... EPMA analysis determined that the composition of all the phases changes during the reaction, which means that all the phases of the initial cermet react during the oxidation and interact ...
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AC Impedance Spectroscopy Analysis of the Corrosion Behavior of Reinforced Concrete in Chloride Solution
... the high sensitivity of the impedance response to the microstructural properties of the cement-based material: any variation of these properties has a great influence on the time required to initiate ...
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Effectively Analysis of Concrete Bridge Deck Corrosion using Electrochemical Impedance Spectroscopy
... Therefore, development of a simple EIS based method for field testing of bridge decks corrosion potential is essential. In this contribution, we investigated the sensitivity of EIS measurement by changing the frequencies ...
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Impedance spectroscopy using maximum length sequences: Application to single cell analysis
... for high speed single cell ...system impedance is measured at a high rate, it would be possible to implement a fast-feedback compensation loop which could take into account slow variations in the ...
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Study of Influence of Electrode Geometry on Impedance Spectroscopy
... Electrochemical Impedance Spectroscopy (EIS) is a powerful and proven tool for analyzing AC impedance ...our analysis, we have found a noteworthy influence of electrode geometry on AC ...
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Impedance Spectroscopy of Zr Modified Ba5SmZr3V7O30 Ceramic
... following high-temperature solid-state reaction ...diffraction analysis of the compound confirms the formation of single-phase orthorhombic structures at room ...of temperature (32˚C - 500˚C) ...
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Relaxation and Conduction Mechanisms of High Tc Lead-Free Ba (Zr,Ti)O3 Positive Temperature Coefficient of Resistivity Ceramic Using Impedance Spectroscopy
... The temperature dependence of ac resistivity at various frequencies and the dc resistivity obtained from grain and grain boundary are illustrated in ...critical temperature (150 °C) temperatures known Curie ...
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