Nanomaterials in the Lubricant Industry
Ashima Srivastava, Pratibha Singh, Preeti Jain, Kirti Srivastava, Sanjeev Sharma
Nanomaterials in lubricants are solid particles having nanometer size (particle size ranging between 1-100 nm) and possessing intriguing tribological properties. When these nanoparticles are incorporated in the lubricating base oil, they have an add-on effect on diminishing friction, wear and tear of the two interacting surfaces in relative motion. Ideally the shape of nano-lubricants is spherical which is encountered in C60 fullerenes, carbon onions, inorganic fullerenes of metal oxides, sulphides, etc. On the other hand, they can have a cylindrical (carbon nanotubes), disc or wire shape also. Nanomaterials have arisen as environmentally-benign lubricant additives to elevate the tribological properties of the traditional lubricants utilized in the fields of automobiles and various industries. The presence of nanoparticles in lubricants enhances the mechanistic aspects of thin film (boundary film), thick film and extreme pressure lubrication. When the layer of lubricating oil is disrupted, for example, the solid nanoparticles in it can take up the load without decomposing and provide essential backup. Other advantages include excellent mechanical strength due to their compact size and stability at high temperatures and pressures. They also have the ability to adsorb on the surfaces of metal machines, preventing direct metal-to-metal contact and thereby wear and tear. These benefits include increased equipment usage, improved fuel efficiency, and increased maintenance intervals. As a result, the current chapter examines several types of nanomaterials as lubricant additives, as well as their applications and benefits in various automotive/engine/industrial lubricants.
Keywords
Nanoparticles, Lubricant, Additives, Friction, Wear, Mechanism
Published online 11/15/2022, 17 pages
Citation: Ashima Srivastava, Pratibha Singh, Preeti Jain, Kirti Srivastava, Sanjeev Sharma, Nanomaterials in the Lubricant Industry, Materials Research Foundations, Vol. 135, pp 23-39, 2023
DOI: https://doi.org/10.21741/9781644902172-2
Part of the book on Emerging Nanomaterials and Their Impact on Society in the 21st Century
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