A5002009189- Hydrogen embrittlement and corrosion behaviors in metals
- Corrosion Behavior and Inhibition
- Concrete Corrosion and Durability
- Non-Destructive Testing Techniques
- Material Properties and Failure Mechanisms
- Nuclear Materials and Properties
- Ultrasonics and Acoustic Wave Propagation
- Fatigue and fracture mechanics
- Fusion materials and technologies
- High Temperature Alloys and Creep
- Smart Materials for Construction
- Scientific Research and Discoveries
- Electrochemical Analysis and Applications
- Structural Integrity and Reliability Analysis
- Analytical Chemistry and Sensors
- Neural Networks and Applications
- High-Temperature Coating Behaviors
- Microstructure and Mechanical Properties of Steels
- Material Properties and Applications
- Diverse Research and Applications
- Model-Driven Software Engineering Techniques
- Electrodeposition and Electroless Coatings
- Radioactive element chemistry and processing
- Metallurgy and Material Forming
- Metal and Thin Film Mechanics
University of Manchester
2010-2021
Dantec Dynamics (United Kingdom)
1994
Institute of Science and Technology
1987-1992
University of Salford
1992
Johns Hopkins University
1990
Abstract The measurement of the electrochemical noise associated with corroding metals places a number requirements on system if good quality data are to be obtained. In particular, aliasing and quantization should avoided. Analysis methods may ignore ordering measured potential or current values by using sequence-independent parameters such as mean, standard deviation, skew, kurtosis, they take sequencing into account computing autocorrelation function, power spectra, higher-order spectra....
The desire to improve the corrosion resistance of Zr cladding material for high burn-up has resulted in a general trend among fuel manufacturers develop alloys with reduced levels Sn. While commonly accepted, reason improved performance observed low-tin zirconium high-temperature aqueous environments remains unclear. High-energy synchrotron X-ray diffraction was used characterize oxides formed by autoclave exposure on Zr–Sn–Nb tin concentration ranging from 0.01 0.92 wt.%. studied included...
In the literature it is a common belief that electropolishing mitigates primary water stress corrosion cracking (PWSCC) because removes superficial cold work. Here, shown electropolished Alloy 600 (UNS N06600) exposed to hydrogenated steam undergoes internal Cr oxidation, whereas mechanical polishing induces external oxidation. This has implications for SCC initiation, which been tested with different surface preparations (electropolishing and polishing) using reverse-U-bend (RUB) C-ring...
Two‐dimensional computer simulations have been used to demonstrate the main atomistic features of a percolation model for alloy passivity. The reproduce all qualitative passivation in Fe‐Cr alloys, including critical composition and potential which decreases with increasing Cr content. New would appear three dimensions are discussed.
A four parameter model is proposed for data collected on maximum pit depths enabling simultaneous extrapolation into the future and over large areas of exposed metal. This based generalized extreme value distribution whose use in this context here justified mainly statistical, rather than metallurgical, reasoning. Those aspects which allow time rely reported power law dependencies mean depths. Use predicting means, standard deviations, percentiles, bounds, order statistics, hole counts, size...
Abstract Pro‐active ageing management is becoming more and important for the economical safe operation of industrial plants. A key element a pro‐active approach to apply in situ corrosion monitoring. The electrochemical noise (EN) technique an example promising method, especially monitoring localised phenomena. Currently, research work on EN carried out several laboratories worldwide different kind applications but also investigation mechanisms. prerequisite performing serious measurement...
Abstract Electrochemical noise generation during stress corrosion cracking (SCC) of high-strength aluminum AA 7075-T6 alloy has been investigated in 3.5% NaCl solution under free potential. The electrochemical was observed as spontaneous potential fluctuations. readings obtained were analyzed using the maximum entropy method. In results, power spectra densities found to decrease with an increase frequency. A low frequency (LF) all specimens tested and it characteristically indicated LF or...
Stress-corrosion cracking experiments have been performed on a high-strength carbon steel exposed to acidified sodium chloride solution poisoned with sulfide. The electrochemical potential of the specimen was monitored during experiment, and this paper reports observed noise. analysis using both maximum entropy method discrete Fourier transform. A consistent noise behavior throughout only perturbation any significance being associated major transients that occurred when actually failed....
Abstract An investigation of the electrochemical noise generation during stress corrosion cracking (SCC) alpha-brass was conducted in Mattsson solution (ammoniacal copper sulfate solution) o...