Farid, Mina (2024) Advancements in Photocured Graphene-Oxide Coatings: Enhancing Tribological Performance through Liquid Crystal Technologies. Masters thesis, Concordia University.
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Abstract
This thesis presents an exploration of advanced tribological coatings for improving wear resistance and reducing friction in mechanical components, particularly in industries like aerospace. Traditional coating methods such as physical vapor deposition and high-velocity oxygen fuel have limitations, necessitating innovative approaches. This research introduces the use of graphene oxide liquid crystals combined with photocuring to develop coatings that significantly enhance tribological performance. The liquid crystal self-assembly of graphene oxide in alcohol allows for dense ordering of platelets on substrates, and photocuring creates strong, covalent bonds between the platelets and the substrate, resulting in durable coatings.
Experimental results demonstrated a remarkable reduction of up to 72% in the friction coefficient compared to uncoated substrates. The study also explored the effects of annealing on coating performance, finding that annealed coatings exhibited lower friction and superior wear resistance for low graphene oxide contents. The research underscores the potential of photocured graphene oxide coatings to address the tribological challenges in critical applications, offering a cost-effective and environmentally sustainable solution that advances the field of coating materials science and engineering.
Divisions: | Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering |
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Item Type: | Thesis (Masters) |
Authors: | Farid, Mina |
Institution: | Concordia University |
Degree Name: | M.A. Sc. |
Program: | Mechanical Engineering |
Date: | 9 October 2024 |
Thesis Supervisor(s): | Wood-Adams, Paula and Stoyanov, Pantcho |
Keywords: | Coatings - Graphene Oxide - Friction - Wear- Photocuring - Liquid Crystals |
ID Code: | 994706 |
Deposited By: | Mina Emad Adly Farid |
Deposited On: | 17 Jun 2025 17:12 |
Last Modified: | 17 Jun 2025 17:12 |
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