Smart controlled-release of corrosion inhibitors for improved corrosion performance of coated metallic parts in automotive

Smart controlled-release of corrosion inhibitors for improved corrosion performance of coated metallic parts in automotive

Rath, Vineet (TU Delft Mechanical, Maritime and Materials Engineering)

Gonzalez Garcia, Y. (mentor)
Schoukens, Ine (graduation committee)

Delft University of Technology

Mechanical Engineering

2019-08-29

Corrosion on the car underbody can damage critical parts, which poses safety risks. The current corrosion protection methods such as wax, sealers and coatings are not effective enough and an advanced form of corrosion protection is desired. Implementation of smart coatings containing corrosion inhibitors can be an effective solution. These corrosion inhibitors should be available at the onset of corrosion and should not react with the coating matrix. The present study deals with implementation of a corrosion inhibitor into a coating over two metallic substrates used in the car underbody. After the initial breakdown of inhibitor particles into finer sizes, encapsulation using a novel technique was performed to prevent interaction of inhibitor with the coating matrix. This encapsulated inhibitor was further studied to understand its release characteristics under the influence of corrosive pH. Finally, electrochemical performance (EIS and SST) of coated samples containing encapsulated inhibitor was studied with respect to bare inhibitor and no inhibitor coatings. Addition of the encapsulated inhibitor improved corrosion performance. Differences were found in the inhibitor release and protection efficiency for both the substrates.

corrosion
car underbody
smart coatings
inhibitors
encapsulation
EIS
SST

http://resolver.tudelft.nl/uuid:b2af9a8c-d96f-4e01-b668-fe001a9dbae5

2023-09-01

Student theses

master thesis

© 2019 Vineet Rath