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Metallurgy and Materials Science quiz - 5

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Corrosion risk planning - 1 - Lead acid battery

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Corrosion is a quality, environment, and safety issue. Hence, it has to come under the cope of integrated management system audits However at the moment, it is more or less considered a quality issue. As such, the general tendency is to solve corrosion issues as they come. Especially in new inventions, the foresight to look for potential corrosion risk gets lost in the attempt to focus and highlight the amazing qualities of the said inventions. Hence, I have initiated this series, where I will take a component and point out the potential corrosion and damage risk areas.  Here goes the first one - lead acid battery cell. (Source:https://opentextbc.ca/chemistry/chapter/17-5-batteries-and-fuel-cells/)  Protective casing -  effect of temperature + electrolyte + contamination in electrolyte on the polymer crevice corrosion at fixtures mechanical damage during handling leading to voids for moisture ingress and oxygen/electrolyte leakage Positive terminal - corrosion of the mate...
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Corrosion in daily life - Blistering

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All of us corrosion people head out of the house to work on coatings. And yet, we leave so many types of coatings behind in our house. The most commonly seen commodity is an electric box with switches. Usually they are coated.  This is an example of such an electric box. It shows blisters formed in the white coating. Such blistering occurs when water penetrates the pores in the coating.  Usually such parts do not come under the 'critical' category. Hence, the coatings are not very thick. Moreover, there is no coating inspector involved during the application. As a result, they are prone to early degradation. However, their position plays an important role in determining this time frame. Those boxes present outside the hose are exposed to the heat and cold. Usually they will be in a shaded area. So, they may not face the rain directly. Some boxes are inside the house in rooms. Those face the least coating damage. The image above is from an electric box in a bathroom...
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CORROSPECTIVE TURNS 2!!

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  Corrospective turns TWO! I am elated to announce a flat 50% discount on ALL of the courses on my website! CODE: 2YEARS Click here to go to the courses! - https://corrospective.com
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