Testing and analysis techniques in rare earth inhibitor research

A critical overview of monitoring infrastructural health using corrosion probes

“…Mahdavi et al [12] reviewed techniques and probes for testing and monitoring the cathodic disbondment of organic coatings. Tan [13–15] discussed issues and principles in measuring corrosion in highly resistive and inhomogeneous media as well as for inhibitor assessment and analysis. Instinctively corrosion probes are considered to be able to acquire in situ and site-specific corrosion data; however, the validity of corrosion probe applications in IHM systems is often not sufficiently examined.…”

“…These asset management tools are useful in providing an overall and general assessment of the ageing of a structure; however, the success of these tools is heavily dependent upon the reliability of structural inspection and monitoring data. Since historical inspection data often do not have sufficient spatial and temporal resolution and conventional corrosion probes have limitations in measuring localised corrosion, these models are generally unable to predict the failure of infrastructural systems that are under dynamic localised corrosion attack [13–15]. This is because corrosion of infrastructures exposed to complex environmental conditions is often affected by dynamically changing local environmental parameters such as local soil and water composition, oxygen level, humidity, salinity, pH, temperature, stray currents, and biological organisms, as well as coating disbondment and cathodic shielding.…”

“…For this reason, sufficient attention should be given to the understanding of localised corrosion mechanism, the possibility of corrosion mechanism change, and possible transitions from general to localised corrosion. As an approach to addressing this issue, electrochemically integrated electrode arrays have been designed to detect localised corrosion [13–18]. The most recent advancement is the development of electrode array-based corrosion probes for detecting corrosion under disbonded coatings (CDC) [11–13], the worst-case scenario form of localised corrosion found on buried pipelines that is not detectable by existing corrosion probe.…”

Recent progress and prospects of rare earth elements for advanced aqueous zinc batteries

“…[55][56][57] In conventional Zn electrodeposition techniques, RE metal salts are more inclined to crystallize at active sites for Zn crystal growth to suppress the growth of Zn dendrite. 58 Inspired by this, Hu et al used CeCl 3 as an electrolyte additive to inhibit dendrite growth and hydrogen evolution. 59 The addition of CeCl 3 can induce the growth of the Zn(002) plane and promote the uniform electrodeposition of Zn along the (002) plane (Fig.…”

An overview of progresses and challenges of electrochemically integrated multi-electrode arrays for probing localised corrosion in complex environmental conditions

“…For this reason, many electrochemical methods including corrosion potential, potentiodynamic polarisation, linear polarisation resistance, electrochemical impedance spectroscopy, and electrochemical noise have been developed and widely applied to acquire corrosion data using variously designed electrochemical probes based usually on the three-electrode system [2–6]. However, it should be noted that most conventional electrochemical methods, in principle, apply only to uniform corrosion and are unable to measure localised corrosion, especially complex forms of localised corrosion occurring in the highly resistive atmosphere, soil and multi-phase flow conditions [1,2,5,7,8], although electrochemical noise analysis has shown some promises in monitoring localised corrosion in some cases [5].…”