Electrochemical corrosion (Differential aeration corrosion/Concentration cell corrosion)

[@g.rameshkumar3555]

Simply and superb explanation.....we understood easily.....

[@RevathiPurushothaman]

Thank you very much.

[@amolmali1308]

Madam I watch Your videos too many time Because of Ur Teaching style

[@RevathiPurushothaman]

Thank you very much. This motivates me to upload more videos.

[@palashsarma4904]

Thanks for the videos. Now I'm sure I'll score good in my exams.

[@RevathiPurushothaman]

You should good marks. Thanks for your compliment.

[@vaibhavsingh343]

Its worth watching this video.Thanks a lot!!!!

[@RevathiPurushothaman]

Thank you.

[@rudrakshpotai5441]

Mam you have explained in such a simple way

[@RevathiPurushothaman]

Thank you.

[@hkhalsa59]

Hello Mam, how does the PAINT helps in fighting corrosion of metal? >Is it acting as a barrier between the metal and the moisture in the environment. >If PAINTING avoids the formation of corrosion, then why using ANODES to avoid corrosion. > Is it to the fact that once the paint is scratched from metal, corrosion occurs and rust begins to form.

[@RevathiPurushothaman]

Paint acts as an organic protective coating, which is one of the methods to prevent corrosion and it acts as a barrier. If there is scratch, which is very common it may lead to pitting corrosion, especially if the metal is a highly active metal(anodic). Anodic coating is another method in which the coating undergoes corrosion preventing the underneath metal.

[@suthanprasad]

Good presentation and easy to understand

[@RevathiPurushothaman]

Thank you very much. Glad that you understood.

[@RevathiPurushothaman]

Thank you very much.

[@mithuandoviailovemymothers6716]

Thank you for a such a wonderful video

[@RevathiPurushothaman]

Thanks for your compliment.

[@suthanprasad]

Nice presentation

[@RevathiPurushothaman]

Thank you.

[@kirtikumarkadam7224]

good

[@RevathiPurushothaman]

Thank you.

[@appuarjun3161]

Tqs a lot.... nicely understood 👌

[@RevathiPurushothaman]

Most welcome.

[@apoorvaamargol5125]

Hi mam one question why does part which has less oxygen act as anode ???

[@abhishek6399]

@1:11 the cathodic reaction is not correctly balanced

[@iamsosweetgahayah2977]

Mam superb explanation.thank u

[@RevathiPurushothaman]

Thank you.

[@amolmali1308]

Classic Lecture madam

[@RevathiPurushothaman]

Thanks a lot

[@joy-jc1cl]

only one video mam.. plzz upload more videos 😊😊😊

[@RevathiPurushothaman]

Sure

[@sameerabanu5848]

Simple, easy and super

[@RevathiPurushothaman]

Thank you.

[@sameerabanu5848]

@@RevathiPurushothaman mam we should thank you❤️❤️

[@RevathiPurushothaman]

​You are most welcome.

[@harishnutraganti2009]

Mam ur topic name is differential aeration corrosion but ur explaing about pitting corrosion?????????

[@RevathiPurushothaman]

This is special case of differential aeration corrosion. When the anodic area is much smaller than the cathodic area, pitting corrosion occurs. That is why I have given many cases of differential aeration corrosion in the assignment.

[@RevathiPurushothaman]

At this point I would like to tell an important information art this is point. This first video was a part of my assignment in a FDP program, where I had restrictions to uploadie a video with only 5-7 minutes. Hence, I could not explain all the examples. After five years only I started to upload series of videos looking at the responses of the audience.

[@kavi0505]

Good one, mam

[@siddhartharaja9413]

Superb!!

[@RevathiPurushothaman]

Thank you.

[@gowrig9497]

Good morning

[@RevathiPurushothaman]

Good afternoon sir. Thanks for your participation.

[@waleedxyz2254]

Why poor location consider anode And rich consider cathode?

[@RevathiPurushothaman]

We are not considering poorly oxygenated area as anode, it acts as the anode because the metal at that portion will get oxidised and undergoes corrosion.

[@chathrapathinikhilkandagat7728]

Mam please upload more videos

[@RevathiPurushothaman]

Sure

[@gkpatilpatil6588]

Gangadhar Kishanrao Patil, ACS College Shankarnagar Tq Biloli Dist Nanded Maharashtra

[@RevathiPurushothaman]

Thanks for your participation.

[@arjunkundu3318]

Your equation is unbalanced Please balance it H2O + ½O2 +2e- -----> 2OH- BALANCE EQUATION

[@RevathiPurushothaman]

Thank you very much. I will update. It was by mistake. 1/2 was put for H2O instead of O2. I have uploaded two more videos. You may watch. Bye.

[@naileggshite]

So after first part of rust create on metal surface ...this part of rust has poorly O2.. therefore will be worked as anodic write?

[@RevathiPurushothaman]

It need not be a rust only, it can be a dust or water droplet etc.

[@naileggshite]

@@RevathiPurushothaman inside crevice from which stand water creates corrosion.and afterwards this oxidized layer avoid O2 to achieve metal Fe surface..so after oxidized layer inside crevice works as anodic? Many thanks 🙏

[@gurujipathak4272]

Good afternoon

[@RevathiPurushothaman]

Good afternoon sir. Thanks for your participation.