Corrosion Inhibition of Automotive Aluminum Alloys

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When:  Nov 18, 2021 from 19:00 to 20:00 (PT)

 CSUN ASM

Hello ASM SFV Chapter Members!

Welcome to our Student Presentation this month! Please join here for the latest updates:
https://connect.asminternational.org/sanfernandovalleychapter/home

This month's meeting on Thursday, November 18th will focus on Corrosion Inhibition of Automotive Aluminum Alloys in Water-Ethylene Glycol Solutions presented by Koushik Kosanam from CSUN!

ABSTRACT:
Commercially available vapor phase corrosion inhibitors were evaluated to determine their corrosion inhibition for aluminum alloys in a water-ethylene glycol (C2H6O2) mixture. When the temperature exceeds 80°C, ethylene glycol can decompose into organic acids. The resulting acid environments cause severe corrosion of aluminum alloys. Electrochemical and constant immersion tests were carried out to study the effects of several inhibitors. The corrosion behavior was studied at multiple temperatures. Corrosion inhibitor VpCI370 at 2.5% dosage showed excellent corrosion protection. It maintained a steady, low corrosion rate during long term exposure by neutralizing pH and forming a hydrophobic film. VpCI-640 inhibitor, also showed the ability to reduce the corrosion rate of aluminum in ethylene glycol solutions. However, due to its high pH chemistry, the effective dosage should be maintained at 2.5% to avoid any potential increase in pH that can promote localized corrosion or under-deposit corrosion attacks. The results of this investigation demonstrated that both inhibitors can lower the corrosion rate in water-ethylene glycol solutions by neutralizing pH and forming stable films.

BIO:
Koushik Kosanam is a research associate in the W.M Keck Advanced Materials Lab at CSUN. He is currently pursuing his MS in Materials Engineering and will graduate in May 2022 and will continue his Doctoral studies in the field of Materials Science and Engineering. He is actively involved in corrosion protection of the concrete structure in very aggressive microbiological attacks and corrosion protection of aluminum alloys in Water-Ethylene Glycol Solutions at elevated temperatures. He had filed a patent on “Novel Filler Materials for Welding of Stainless Steel” to mitigate hexavalent chromium fumes which are carcinogenic in nature. He also has 5 conference paper publications at various International conferences.  

Join us Thursday, November 18, 2021 at 7 pm (PST).

 

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Meeting Number: 2565 885 3071
Password: Corrosion (26776746 from video systems)


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