Article
Materials Science, Multidisciplinary
Margarita Diaz-Ramos, Virginie Roche, Ran Song, Hongtao Fan, Christophe Bureau, Jean Claude Lepretre
Summary: Layers on stents of Mg-Nd-Zn-Zr alloy were studied after different treatments using electrochemical techniques in an organic electrolyte. The electrochemical impedance results showed constant-phase-element behavior attributed to the layers on the stent surface and Mg2+ ion diffusion impedance. A power law model was suggested to characterize the electrical properties of the layers. Additionally, samples with oxide layers exhibited a high-frequency distribution well described by complex ohmic impedance. Parylene coatings showed lower capacitance values compared with bare and plasma pre-treated stents, likely due to the thicker layer maintained after crimping and expansion.
Article
Construction & Building Technology
Hao Tang, Jueshi Qian, Jihui Qin, Zhen Li, Xingwen Jia, Yanfei Yue, Fumin Dai
Summary: The electrochemical behaviors of steel bars in magnesium phosphate cement (MPC) were studied, and it was found that the steel bars in the simulated MPC pore solution could effectively passivate, forming films mainly composed of FePO4. Compared to traditional cement materials, MPC exhibited superior corrosion protection due to the continuous precipitation of phosphates and accumulation of passive films. After depassivation of steel bars, MPC showed self-healing corrosion behavior characterized by dramatic recovery of passive film resistance and charge transfer resistance. Corroded steel bars in MPC with a low magnesia-to-phosphate ratio could re-passivate and stabilize for long periods of time.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Jianfen Wan, Lu Yang, Songpei Hu, Kai Liu, Jiabin Jia, Jiafeng Yao
Summary: A Position Calibration Method (PCM) is proposed to improve the measurement accuracy of single cell measurement using Electrochemical Impedance Spectroscopy (EIS). The relationship between impedance and position is explored using numerical simulation and a mathematical model is established based on this relationship. The validity of the PCM is verified through experiments using Na2O.CaO.6SiO particles and Zebrafish eggs. The results show that the impedance varies with position and the PCM achieves a high coincidence degree for position calibration.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Kai-Xuan Gu, Kai-Kai Wang, Jian-Peng Zheng, Liu-Biao Chen, Jun-Jie Wang
Summary: The effect of deep cryogenic treatment (DCT) on the electrochemical behavior and corrosion resistance of Ti-6Al-4V alloy in Hank's solution was studied. Polarization and electrochemical impedance spectroscopy (EIS) were used to evaluate the behavior and mechanism. Atomic force microscopy (AFM) was used to detect the corrosion surface. The results showed that DCT improved the corrosion resistance by shifting the corrosion potentials, decreasing corrosion current densities, and reducing surface roughness.
Article
Engineering, Electrical & Electronic
Amin Moradpour, Manuel Kasper, Johannes Hoffmann, Ferry Kienberger
Summary: This paper presents a comprehensive uncertainty analysis of calibrated electrochemical impedance spectroscopy (EIS) for batteries, aiming to identify the effect of fixture repeatability and measurement noise on the measured impedances. A specific error model is assigned to each uncertainty source, and the model parameters' real and imaginary parts are characterized through impedance measurements. The errors are propagated through the calibration and correction functions, and the resulting uncertainty is shown as ellipsoids in the Nyquist plot.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Materials Science, Multidisciplinary
X. W. Wang, W. Wang, W. Chen, D. M. Chen
Summary: The study investigated the effects of Al content and annealing condition on the microstructures and corrosion performances of Mg-3 wt.%Cu-x Al alloys. Al-bearing alloys exhibit MgAlCu and Mg17Al12 phases with higher Volta potential, and the volume fractions of Cu-bearing phases are influenced by Al content and annealing condition. The corrosion performances of alloys can be controlled by adjusting Al content and annealing conditions, as indicated by the relationship between weight loss rate and Cu-bearing phase volume fractions.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Talal A. Aljohani, Majed O. Alawad, Sally Elkatatny, Abdulrahman I. Alateyah, Meteb T. Bin Rubayan, Mohammed A. Alhajji, Muntathir I. Al Beladi, Fuad Khoshnaw, Waleed H. El-Garaihy
Summary: This study enhanced the corrosion performance of AA2014 aluminum alloy by applying a silica (SiC) coating using the plasma electrolytic oxidation (PEO) process. The microstructure and electrochemical behavior of the coated samples were investigated with different electrical parameters and with or without SiC. The results showed that the SiC-PEO-coated samples exhibited significantly decreased corrosion rate compared to the uncoated alloy.
Article
Electrochemistry
Linqian Wang, Darya Snihirova, Meisam Dabiri Havigh, Min Deng, Sviatlana V. Lamaka, Herman Terryn, Mikhail L. Zheludkevich
Summary: This study investigates the non-stationarity of EIS measurements on Mg-based materials in aqueous media. The results show that the impedance spectra of Mg-based materials are affected by both internal and external non-stationarity. Multisine odd random phase EIS measurements reveal the non-stationarity and non-linearity of the system.
ELECTROCHIMICA ACTA
(2023)
Article
Metallurgy & Metallurgical Engineering
Wen -jing Chen, Nan Ye, Hai-ou Zhuo, Jian-cheng Tang
Summary: By studying the corrosion behavior and electrochemical behavior of Zn-30Sn-2Cu-xNi lead-free solder alloys in NaCl solution, it was found that the addition of 0.5 wt.% Ni can improve the corrosion resistance of the alloy by forming a better corrosion layer as a physical barrier. As the Ni content increases, the corrosion resistance of the alloy decreases, mainly due to galvanic corrosion accelerating the dissolution of the Zn-rich phase.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Electrical & Electronic
Leila Es Sebar, Leonardo Iannucci, Emma Angelini, Sabrina Grassini, Marco Parvis
Summary: This article presents a portable low-cost device for electrochemical impedance spectroscopy (EIS) measurements based on TeensyDuino, eliminating the need for additional components. The instrument can measure impedance over a wide frequency range and has a low uncertainty level.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Electrochemistry
Ran Attias, Ben Dlugatch, Munseok S. Chae, Yosef Goffer, Doron Aurbach
Summary: The study reveals that the interfacial resistance decreases significantly during dynamic processes of steady magnesium deposition or dissolution, while it is very high at the OCV. Adsorption phenomena have different effects on interfacial charge transfer, leading to high impedance during steady-state deposition due to a larger distance for electron tunneling. During dissolution, the high interfacial impedance measured is likely caused by migration of magnesium ions away from the metal surface. At higher currents, the interfacial resistivity follows Butler-Volmer kinetics without complications from adsorption phenomena.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
V. Bongiorno, S. Gibbon, E. Michailidou, M. Curioni
Summary: This study explores the potential use of machine learning algorithms to interpret electrochemical impedance spectroscopy (EIS) data, focusing on classification and fitting scenarios. The traditional approach based on equivalent circuit modeling is difficult to automate and has limited industrial applications.
Article
Chemistry, Analytical
Hend S. Magar, Rabeay Y. A. Hassan, Ashok Mulchandani
Summary: Electrochemical impedance spectroscopy (EIS) is a powerful technique for analyzing interfacial properties related to bio-recognition events at the electrode surface, with applications in biomedical diagnosis and environmental monitoring. The use of nanomaterials enhances the analytical features of impedimetric biosensors, promoting faster electron transfer and improving sensor reliability and accuracy.
Article
Energy & Fuels
Mohammad Abareshi, Erfan Sadeghi, Mohsen Hamzeh, Mehrdad Saif, Seyed Mohammad Mahdi Alavi
Summary: This paper proposes a multi-purpose controllable electrochemical impedance spectroscopy (MP-cEIS) device for battery monitoring and testing during charge and discharge processes. The device is based on a synchronous buck converter with a low-cost input filter and includes a closed-loop feedback system for controlling the injection of the EIS excitation signal. The design of a robust controller using H-infinity and quantitative feedback theory (QFT) methods is also presented.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Asim Iltaf, M. Ramzan Abdul Karim, Aqeel A. Taimoor, Massab Junaid, Fahd Nawaz Khan, Syed Abbas Raza, Muhammad Zubair Khan
Summary: After electron beam welding Ti-5Al-2.5Sn alloy plates with different weld patterns, the microstructure of the fusion zone varied and affected the corrosion resistance. The elliptical pattern exhibited better passivation and film stability, while the arrow pattern was more prone to pitting.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
