Enabling Nearly-Frictionless Sliding by Smart Surface and Interface Engineering
(Room Room 104-B)
29 Apr 19
9:20 AM
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10:00 AM
Tracks:
Protective, Tribological and Decorative Coatings
Using fundamental principles of surface/interface engineering, great strides have been made in recent years for the design and development of superslick materials and coatings (i.e., graphene and other 2D materials, nanodiamond, diamondlike carbon, etc.) affording friction coefficients as low as 0.001. When considering the fact that friction and wear related energy losses account for nearly a quarter of the global energy output, the further development and implementation of such coatings will help in achieving a sustainable energy future that is also environmentally sensible. In this presentation, a comprehensive overview of what makes and breaks superlubricity in such coatings is provided in relation to the many intrinsic and extrinsic factors acting on the sliding interfaces. In light of the recent analytical, experimental, and computational advances, an attempt will also be made to elucidate those underlying mechanisms that are most responsible for such superlubric sliding behaviors. Several case studies involving monolithic and hybrid coating systems providing super-low friction and wear are presented as the most exciting trends in tribological coatings field. Overall, these and other novel approaches are leading the way for the design and production of next generation tribological coatings that can further increase efficiency, reduce carbon footprint, as well as extend machine life in future moving mechanical systems.