Electrochemical testing - 2 - What is a reference electrode?

What is a reference electrode?

A reference electrode is used as a scale to measure the potential of the working electrode.

Reversible reactions

Just as a scale is unchanging, the potential and chemical conditions of the reference electrode should also be unchanging.

Thus, it is necessary that the reactions - oxidation and reduction - occurring inside a reference electrode are reversible. This ensures constant chemistry.

No polarization

It also ensures that there is no net polarization as both reactions occur simultaneously at different points in the reference electrode. this keeps its potential constant.

Thus, the potential of any working electrode connected to this reference electrode will be dependent only on the conditions of the working electrode. This makes it easier to note the changes happening in the working electrode.

Check out the video for a detailed explanation

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Corrosion quiz - 1

Corrosion quiz - 1 Loading… Done? Click here for the next quiz ! Check out the types of marine corrosion here ! https://corrospective.com/ 😀Happy learning! 😀

What is a Corrosion Loop - PART 1 - CONCEPT

Corrosion loop is used to simplify inspection procedures in refining processes. Corrosion loop is defined as a group of components with common materials, processes, and operating parameters. Source: Rachman, A. and Ratnayake, R.M.C. (2020), "Corrosion loop development of oil and gas piping system based on machine learning and group technology method", Journal of Quality in Maintenance Engineering, Vol. 26 No. 3, pp. 349-368. https://doi.org/10.1108/JQME-07-2018-0058 It is needed when the scenario has - 1. Complex process 2. Several variables such a materials of construction, process parameters, functions 3. Multiple damage mechanisms WATCH THE VIDEO FOR A DETAILED EXPLANATION - Click here for part 2 ! https://corrospective.com/ 😀Happy learning! 😀

Isocorrosion chart snapshot

concept Isocorrosion chart Use Estimate corrosion rates for an alloy Select an alloy for a particular application with specific parameters Definition A plot of temperature versus electrolyte concentration, with lines depicting combination where similar corrosion rates are found example how to use it? An application needs a temperature and concentration as depicted by point 1 in the image above. We can plot it on the isocorrosion chart for that alloy and estimate the corrosion rate. The design of the component and corrosion allowance can be decided accordingly. A method to determine the suitability of the alloy for an application and electrolyte-temperature combination. Video below for practical demo of the use of the chart! Dive Deeper: Tips to begin experiments Do you like to solve quizzes ? https://corrospective.com 😀 Happy learning! 😀

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