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The Role of Surface Engineering in Tribology
Published in Jitendra Kumar Katiyar, Alessandro Ruggiero, T.V.V.L.N. Rao, J. Paulo Davim, Industrial Tribology, 2023
P. Kumaravelu, Sudheer Reddy Beyanagari, S. Arulvel, Jayakrishna Kandasamy
Tribology is the study of the science and technology of interacting surfaces in relative motion, including friction, wear, lubrication, and related design factors [1]. Because tribology is so closely linked to practical applications, elaborative research and empirical experience are extremely important in today’s circumstances. The operating environment and contact mechanism are two of the most critical factors that affect the investigation of tribology. To understand the tribological behaviour, it is necessary to have a knowledge of physics, chemistry, metallurgy, and mechanics, which makes tribology an interdisciplinary science. Tribology deals, in particular, with friction, wear, and lubrication. Friction is defined as a body’s resistance to a movement against another body. Friction is a system response in the form of a reaction force, not a material property which is mainly influenced by the parameters such as temperature, moisture, load, mechanical characteristics, and surface topography [2].
Tribological Behavior in Bulk and Sheet Forming Processes
Published in Kakandikar Ganesh Marotrao, Anupam Agrawal, D. Ravi Kumar, Metal Forming Processes, 2023
Vishal Bhojak, Jinesh Kumar Jain
In 2015, the United Nations set 17 sustainable development goals aimed at eradicating poverty, reducing inequality, and encouraging responsible consumption and production. Friction, wear, and lubrication are all aspects of tribology that have a significant impact on industrial and manufacturing processes. Tribology is also important for achieving sustainable development goals. A lot of work has gone into developing new environmentally friendly lubricants and ensuring the long-term viability of tribology [1].
The Circular Mode AFM
Published in Klaus D. Sattler, st Century Nanoscience – A Handbook, 2020
Olivier Noel, Nguyen Anh Dung, Pierre-Emmanuel Mazeran
Macroscopic mechanisms may find clarifications1 or new concepts2-3 from investigations at the nanoscale. It is particularly the case for tribology as friction and wear in a macroscopic contact result from the global response of a huge population of micro-contacts generated by the surface roughness in the contact interface. Consequently, the elementary mechanisms, which are responsible for friction and wear, are intricate to identify and to understand. A way to explore friction mechanisms is to consider contact models. For example, friction in a mono-asperity contact is obviously easier to apprehend as the contact area and pressure can easily be estimated.
Machine learning assisted optimization of tribological parameters of Al–Co–Cr–Fe–Ni high-entropy alloy
Published in Materials and Manufacturing Processes, 2023
Saurabh Vashistha, Bashista Kumar Mahanta, Vivek Kumar Singh, Shailesh Kumar Singh
The majority of the studies in the area of HEAs are associated with metallurgical property studies and mechanical behavior analysis, but very few researchers have explored the tribological performance of HEAs. Due to excellent tribological properties like wear resistance, HEAs have the potential to replace conventional wear-resistant alloys in moving parts. Tribology is the study of surface interaction during relative motion, including wear rate, friction, and surface roughness in different environmental conditions.[6] The main challenges incorporated into this study are due to the varied composition of materials, which directly affect the tribological behavior significantly. To avoid confusion in materials design for a particular area, modeling plays an important role. We can model each and every individual parameter as per our requirements, and results can be predicted close to the experiments.
Tribo-mechanical performance of brake composite material: a comprehensive review
Published in Tribology - Materials, Surfaces & Interfaces, 2023
Dhinakaran Veeman, Jitendra Kumar Katiyar, Alessandro Ruggiero
Tribology is the study of a better understanding of wear, friction and lubrication. There are various terminologies and parameters to be considered while analysing a material. The term tribology has been given importance because most materials require wear analysis as they tend to fail in significant cases. With a better understanding of the tribology of materials, the material’s durability and resistance to wear can be optimized, and the material can be provided with the property requirements that would satisfy the application. The third body layer resembles a continuous layer at a friction-based pair interface for all the brake pad materials, where energy transformation occurs. According to the viewpoint on the third physical layer, the friction pair interface of wear debris is trapped into a continuous sheet rather than particle isolation from the surface during the braking phase [166]. This layer is influenced by frictional heat, and a rotor film has known as transmission film, i.e. distributed and on the surface, it continues to degrade. The third body layer improves the wearing strength of the brake pad by supplying a lubricant barrier on the surface [167] and minimizes the counterpart loss. It dissipates the velocity gradient generated from kinetic to thermal intensity during an energy transfer. The vehicle’s speed is balanced and scattered in this layer as the speed gradient [168]. There are 20 mechanisms to accommodate the two bodies; the interlayer between a third body and a second body, called screens, or between two so-called third bodies [169,170] can be used.
A comprehensive review of sustainable approaches for synthetic lubricant components
Published in Green Chemistry Letters and Reviews, 2023
Jessica Pichler, Rosa Maria Eder, Charlotte Besser, Lucia Pisarova, Nicole Dörr, Martina Marchetti-Deschmann, Marcella Frauscher
What is green tribology? Tribology – the science of interacting surfaces in relative motion – in general, comprises friction, wear reduction, and lubrication improvement, with the intention to save energy and materials (4). The term green tribology implicates ‘the science and technology of the tribological aspects of ecological balance and of environmental and biological impacts’ and combines the areas of green engineering and green chemistry. The areas of green tribology incorporate (i) biomimetic surfaces, (ii) environmentally friendly and biodegradable lubrication, and (iii) tribology of renewable sources. The performance of a tribological system plays the most important role in terms of efficiency improvement including prevention of heat pollution, energy dissipation, and protection of material by controlling friction and wear (5). Green tribology becomes increasingly important when heading toward a low-carbon economy and dealing with issues such as environmental pollution, climate crisis, and global energy shortage (4). In this work, we focus on sustainable lubrication as a contributing factor toward greener tribology.