Chemical treatment quiz

To being a corrosion 'nerd'

I am someone who loves to study. This may sound 'nerdy'. In fact, someone called me that once. I was almost 22 and even then I was OFFENDED. Hah! This is something so many of us have struggled with. In fact, just to not be a 'nerd', there are people who have simply stopped studying as much as they used to. After all 'OMG, you study so much!' is not really 'cool' after a certain age. Not anymore! I have learned that everyone is 'nerdy' in their own way, even those who pride themselves of being 'laid back' and proceed to call others 'nerds'. So, here's to you, the sports lover. YES, I am looking at you. If you can mouth off the statistics for your favourite team, you are a nerd, only a sports one. In fact when I get hold of a magazine for corrosion, I have to take a deep breath and choose which article to read. Obviously, I want to read all the articles at once! There is so much to learn, especially in terms of scie...

Corrosion in fertilizer industry - 1.2 Elemental sulphur attack

WATCH THE VIDEO HERE OR READ ON BELOW! Elemental sulphur attack is NOT sulphidation or hydrogen sulphide corrosion. It is an aqueous corrosion phenomenon. It considers two modes - acidification of sulphur - formation of sulphuric acid 2. direct cathodic reduction of sulphur with anodic dissolution of iron The lowering of pH is the main source of corrosion in both the methods. The phenomenon is temperature dependent. It increases with increase in temperature and becomes particularly severe above the melting point of sulphur (~112.8 degree Celsius). Hydrogen sulphide present in the petroleum may aggravate the sulphur attack by enhancing uniform pitting corrosion. Monoethylene glycol is used to prevent condensate formation ans may be present in traces in the feedstock petroleum. This enhances the sulphur attack in the form of uniform corrosion, and crevice corrosion. References: Fang, Haitao, Brown, Bruce, Young, David, and Srdjan Nešic. "Investigation...

Corrosion risk planning - 1 - Lead acid battery

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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