Tribology of Graphene

Tribology of Graphene: Simulation Methods, Preparation Methods, and Their Applications provides an exhaustive reference guide on the tribology of graphene-based materials. The book begins with a discussion on the selection of the proper graphene-based material and then segues into how to choose a deposition method, how to control of its structure and properties, and the most effective working conditions and applications. The latest developments in theoretical simulations of graphene friction, preparation methods, and effective applications are all reviewed, as are the ways various graphene coatings can be successfully employed to decrease friction and wear in nano-, micro- and macro-mechanical applications. Synthesizes the broad current research in tribological applications of graphene all in one place Covers theoretical simulations and preparation methods, including insights on how to put them into practice, allowing for quicker and more effective selection of graphene-based material Provides a broader perspective by discussing both graphene-based composites and additives

Superlubricity is defined as a sliding regime in which friction or resistance to sliding vanishes. It has been shown that energy can be conserved by further reducing/removing friction in moving mechanical systems and this book includes contributions from world-renowned scientists who address some of the most fundamental research issues in overcoming friction. Superlubricity reviews the latest methods and materials in this area of research that are aimed at removing friction in nano-to-micro scale machines and large scale engineering components. Insight is also given into the atomic-scale origins of friction in general and superlubricity while other chapters focus on experimental and practical aspects or impacts of superlubricity that will be very useful for broader industrial community. * Reviews the latest fundamental research in superlubricity today * Presents 'state-of-the-art' methods, materials, and experimental techniques * Latest developments in tribomaterials, coatings, and lubricants providing superlubricity

Graphene is, basically, a single atomic layer of graphite, an abundant mineral that is an allotrope of carbon that is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. What makes graphene so special is its sp2 hybridization and very thin atomic thickness (of 0.345 Nm). These properties are what enable graphene to break so many records in terms of strength, electricity, and heat conduction (as well as many others). This book gathers valuable information about the surface chemistry of graphene, some of its properties (electrical, mechanical, etc.), and many of its modifications that can be taken into account.

Graphene and graphene based materials have great potential for their use in new technological applications. Here, we investigate the tribological properties of graphene, graphite, and graphene fluoride. We extensively studied these materials experimentally by using Atomic Force Microscopy (AFM) and theoretically by performing Molecular Dynamics Simulations (MDS). Experimental studies were based on rotational techniques to determine the directional dependence of the orthotropic sliding friction using Trace-Minus-Retrace (TMR) analysis of the height and lateral profiles. The MDS were focused on differences in sliding friction on the interior and at the edges of graphene with a fixed temperature for the 3Å and 4Å tip - surface separations. By performing both methods, experimental measurements, and atomistic simulations, the friction coefficients of graphene, graphene fluoride, and graphite were found to be in the range of 10−3 to 10−1. We found that atomic tip - surface interactions have an important effect on friction.

Discusses the aim of the study was to prepare PTFE / graphene nanocomposites and examine the influence of the graphene nanoplatelets on the tribological and gas barrier properties of the PTFE / graphene nanocomposite seals. To evaluate the graphene / PTFE nanocomposites, the following aspects were investigated: 1. The preparation method of graphene filled PTFE nanocomposites that entailed the dispersion of the graphene nanoplatelets with the PTFE powder resin, the influence of the pre-forming pressure during cold compaction on the PTFE / graphene powders and the processing (free-sintering) of the pre-formed billets. 2. The surface modification of graphene via oxyfluorination to improve the interaction between the graphene and the modified PTFE matrix. 3. The wear resistance and coefficient of friction of the sintered graphene- and oxyfluorinated graphene-filled PTFE nanocomposite discs along with the tribo-chemical properties. 4. The helium gas barrier properties of graphene- and oxyfluorinated graphene-filled PTFE nanocomposite discs along with the application of tortuosity models to describe the relative permeability reduction and composite morphology. PTFE nanocomposite discs along with the application of tortuosity models to describe the relative permeability reduction and composite morphology.

The last few decades have seen rapid development in the field of surface engineering and its applications in almost all industrial sectors. Tribological coatings, which are an important aspect of surface engineering, are today applied on machine component surfaces for a diverse range of moving machine components to control (mostly to minimize) friction and wear in order to conserve energy and materials. This reprint book is a compilation of 11 research papers contributed by experts in the field of surface engineering and tribology. These papers have dealt with the synthesis of various types of coatings, characterization and applications under different operating conditions. It is hoped that this reprint book will be of interest, not only to researchers, but also to practicing engineers and technologists in the industry.

The technology involved in lubrication by nanoparticles is a rapidly developing scientific area and one that has been watched with interest for the past ten years. Nanolubrication offers a solution to many problems associated with traditional lubricants that contain sulphur and phosphorus; and though for some time the production of nanoparticles was restricted by the technologies available, today synthesis methods have been improved to such a level that it is possible to produce large quantities relatively cheaply and efficiently. Nanolubricants develops a new concept of lubrication, based on these nanoparticles, and along with the authors’ own research it synthesises the information available on the topic of nanolubrication from existing literature and presents it in a concise form. Describes the many advantages and potential applications of nanotechnology in the tribological field. Offers a full review of the state-of-the-art as well as much original research that is yet unpublished. Includes sections on boundary lubrication by colloïdal systems, nanolubricants made of metal dichalcogenides, carbon-based nanolubricants, overbased detergent salts, nanolubricants made of metals and boron-based solid nanolubricants and lubrication additives. Authored by highly regarded experts in the field with contributions from leading international academics. Nanolubricants will appeal to postgraduate students, academics and researchers in mechanical engineering, chemical engineering and materials science. It should also be of interest to practising engineers with petroleum companies and mechanical manufacturers.

In most tribological applications, liquid or grease based lubricants are used to facilitate the relative motion of solid bodies to minimize friction and wear between interacting surfaces. The challenges for liquid lubricants arise in extreme environmental conditions, such as very high or low temperatures, vacuum, radiation, and extreme contact pressure. At these conditions, solid lubricants may be the alternative choice which can help to decrease friction and wear without incorporating liquid lubricants. Challenges with solid lubricants are to maintain a continuous supply of solid lubricants on the contact surfaces to act as lubricous layer between two sliding surfaces. Such a continuous supply of solid lubricant is more easily maintained in the case of liquid lubricants when compared to solid lubricants. The most innovative development to ensure a continuous supply of solid lubricant to the contact surface during sliding is to introduce solid lubricant as reinforcement into the matrix of one of the sliding components. Composite materials are engineered or naturally occurring materials which contain two or more distinct constituents with significantly different chemical, physical and mechanical properties. Composites consist of reinforcement and matrix (metal, polymer and ceramics). Among various reinforcements, recent emerging material, solid lubricant, is found to have many favorable attributes such as good self-lubricant property. Self‐lubrication is the ability of material to transfer embedded solid lubricants to the contact surface to decrease wear rate and friction in the absence of an external lubricant. Self-lubricating metal matrix composites (SLMMCs) are an important category of engineering materials that are increasingly replacing a number of conventional materials in the automotive, aerospace, and marine industries due to superior tribological properties. In SLMMCs, solid lubricant materials including carbonous materials, molybdenum disulfide (MoS2), and hexagonal boron nitride (h-BN) are embedded into the metal matrices as reinforcements to manufacture a novel material with attractive self-lubricating properties. Several studies have been investigated the tribological properties of self-lubricating materials. This book fills that gap to have a reference book about self-lubricating materials and their properties to help scientists, engineers, and industries. This book will try to discuss technically about self-lubricating materials and their properties and the applications for industries. The chapters will be written by authoritative expertise in the field. Additionally, this book will demonstrate fundamental study and most advanced innovations in self-lubricating materials as regards to friction and wear. The chapters also include tribological properties of composites and coatings and some practical application of self-lubricating materials.

Surface science and tribology play very critical roles in many industries. Manufacture and use of almost all consumer and industrial products rely on the application of advanced surface and tribological knowledge. The fourth in a series, Surfactants in Tribology, Volume 4 provides an update on research and development activities connecting surfactants and tribological phenomena. Written by renowned subject matter experts, the book demonstrates how improved design of surfactants can be harnessed to control tribological phenomena. Profusely illustrated and copiously referenced, the chapters also discuss novel approaches to control tribological phenomena using surfactants including green surfactants. It also discusses the underlying tribological and surface science issues relevant to many situations in diverse industries. The information in this volume provides a cutting-edge reference connecting the fields of surfactants and tribology as a way forward to novel, enhanced methods of controlling lubrication, friction, and wear. It reflects the latest developments, highlighting the relevance of surfactants in tribological phenomena in a broad range of industries. As we learn more about the connection between surfactants and tribology, new and improved ways to control lubrication, friction, and wear utilizing surfactants will emerge. This book takes us farther on the path towards this goal.

This book contains advanced-level research material in the area of lubrication theory and related aspects, presented by eminent researchers during the International Conference on Advances in Tribology and Engineering Systems (ICATES 2013) held at Gujarat Technological University, Ahmedabad, India during October 15–17, 2013. The material in this book represents the advanced field of tribology and reflects the work of many eminent researchers from both India and abroad. The treatment of the presentations is the result of the contributions of several professionals working in the industry and academia. This book will be useful for students, researchers, academicians, and professionals working in the area of tribology, in general, and bearing performance characteristics, in particular, especially from the point-of-view of design. This book will also appeal to researchers and professionals working in fluid-film lubrication and other practical applications of tribology. A wide range of topics has been included despite space and time constraints. Basic concepts and fundamentals techniques have been emphasized upon, while also including highly specialized topics and methods (such as nanotribology, bio-nanotribology). Care has been taken to generate interest for a wide range of readers, considering the interdisciplinary nature of the subject.

Tribology of Polymeric Nanocomposites provides a comprehensive description of polymeric nanocomposites, both as bulk materials and as thin surface coatings, and provides rare, focused coverage of their tribological behavior and potential use in tribological applications. Providing engineers and designers with the preparation techniques, friction and wear mechanisms, property information and evaluation methodology needed to select the right polymeric nanocomposites for the job, this unique book also includes valuable real-world examples of polymeric nanocomposites in action in tribological applications. Provides a complete reference to polmer nanocomposite material use in tribology from preparation through to selection and use. Explains the theory through examples of real-world applications, keeping this high-level topic practical and accessible. Includes contributions from more than 20 international tribology experts to offer broad yet detailed coverage of this fast-moving field.

This ebook is a compilation of 234 papers presented at the 6th Asia International Conference on Tribology (ASIATRIB2018): Kuching, Sarawak - Malaysia from 17 to 20 September 2018.

This book focuses on innovative surfaces, lubricants, and materials to reduce friction and wear for environmental conservation and sustainability. Green Tribology: Emerging Technologies and Applications creates a platform for sharing knowledge currently emerging in the field of green tribology and concentrates on advances and developments in technologies and applications. FEATURES Discusses the influence of technological developments in green tribology on the environment and sustainability Highlights key findings on the superior tribological characteristics of bioinspired surfaces, tribological performance improvements with advances in green/ecofriendly materials, environmentally friendly lubricants, minimum quantity lubrication, and reuse of disposed materials Brings together the research expertise of leaders in the international tribology community Describes ongoing trends and future outlooks Aimed for advanced students, researchers, and industry professionals, this book will be of interest to readers seeking to understand and apply sustainable practices in tribology and lubrication engineering and related fields.

Machining and Tribology provides insight into both the role of tribology in machining and the effects of various machining processes on tribology, exploring topics such as machining mechanisms, coolant technology, tool wear, and more. Covering the latest research, the book starts by looking at the tribological aspects of turning, milling, and drilling processes. From there, it explores the effects of different coolants such as flood, minimum quantity lubrication, and cryogenics on machining forces, tool wear, friction, chip formation, and surface generation during various machining processes. Tribological considerations of machined components follow, and the volume concludes with chapters covering simulation scenarios for predicting machining forces, tool wear, surface generation, and chip formation. Draws upon the science of tribology to better understand, predict, and improve machining processes Covers tribology in different types of machining such as turning, milling, grinding, abrasive jet machining, and others Explores the underlying mechanisms of coolant contributions on machining processes Applies simulation techniques to explore the mechanism of nano-machining

This ebook is a compilation of papers presented at the Malaysian International Tribology Conference 2015 (MITC2015) - Penang, Malaysia on 16 ~ 17 November 2015.

This book presents select proceedings of the International Conference on Future Learning Aspects of Mechanical Engineering (FLAME 2018). The book covers mechanical design areas such as computational mechanics, finite element modeling, computer aided designing, tribology, fracture mechanics, and vibration. The book brings together different aspects of engineering design, and will be useful for researchers and professionals working in this field.

This book broadens the knowledge of tribology. This book is evolved out of current research trends on tribological performance of systems related to nano tribology, rheology, engines, polymer brushes, composite materials, erosive wear and lubrication. The book deals with enhancing the ideas on tribological properties, the different types of wear phenomenon and lubrication enhancement. Further, the tribological performance of systems, whether nano, micro or macro-scale, depends upon a large number of external parameters and important among them are temperature, contact pressure and relative speed. Thus, the book focus on the theoretical aspects to industrial applications of tribology.

Tribology and Applications of Self-Lubricating Materials provides insight into the complex mechanisms behind the development of self-lubricating materials, which due to their ability to transfer embedded solid lubricants to the contact surface to decrease wear rate and friction in the absence of an external lubricant, make up an important part of engineering materials used today. This book emphasizes an understanding of the tribological nature of different composites such as metal, polymer, and ceramic matrix composites and discusses the compatibility of these composites with specific lubricants. The book also offers a view of advancements in the development of self-lubricating mechanisms and covers the latest technologies in the field.

This book is a compilation of witty and insightful short pieces on scientific developments in the science of friction, lubrication and wear. It focuses on topics that are of interest to practicing scientists, engineers and students in tribology and related areas, and deals with novel and intriguing aspects of this important field. In addition, landmarks of the last decade of tribology are covered, including new world records for low friction and breakthroughs in measurement technology. This anthology, which was originally published over a decade as columns entitled "Cutting Edge" in Tribology & Lubrication Technology magazine of the Society of Tribologists and Lubrication Engineers, is both educational and entertaining. While the style is eminently readable, each column is accompanied by references to the relevant literature. Contents:Opinions and PeopleFundamentals of Friction and DamageLubricating Hard DrivesNew MaterialsNew MethodsBiotribologyThe Contact ConundrumTribochemistryWeird and Wonderful Effects in Tribology Readership: Researchers, scientists and students in tribology, materials study, friction and lubrication research.Key Features:Informative: on new developments in tribologyEntertaining: written in a witty styleAuthoritative: authored by the editors of the top-ranked tribology journalKeywords:Tribology;Friction;Lubrication;WearReview: “The book covers a pretty wide variety of topics for a small book, thus providing the reader with a cognizant perspective on subjects that the reader might have only encountered in passing but about which he might yet be curious. This book makes for a delightful read and, while certainly technical in nature, a person with a minimal knowledge of the world of tribology can readily follow and understand the particular subject being discussed. Eddy and Nic are masters of simple, clear explanations as exhibited in their columns and often with a little humor, interjected for good measure.” Society of Tribologists and Lubrication Engineers