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Coatings Tribology

Author: Kenneth Holmberg
Publisher: Elsevier
ISBN: 9780080931463
Size: 44.30 MB
Format: PDF, Kindle
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The surface coating field is a rapidly developing area of science and technology that offers new methods and techniques to control friction and wear. New coating types are continually being developed and the potential applications in different industrial fields are ever growing, ranging from machine components and consumer products to medical instruments and prostheses. This book provides an extensive review of the latest technology in the field, addressing techniques such as physical and chemical vapour deposition, the tribological properties of coatings, and coating characterization and performance evaluation techniques. Eleven different cases are examined in close detail to demonstrate the improvement of tribological properties and a guide to selecting coatings is also provided. This second edition is still the only monograph in the field to give a holistic view of the subject and presents all aspects, including test and performance data as well as insights into mechanisms and interactions, thus providing the level of understanding vital for the practical application of coatings. * An extensive review of the latest developments in the field of surface coatings * Presents both theory and practical applications * Includes a guide for selecting coatings

Tribomechanik Beschichteter Zerspanwerkzeuge

Author: Susanne Eva Cordes
Publisher: Apprimus Wissenschaftsverlag
ISBN: 3863591224
Size: 59.60 MB
Format: PDF
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Die Beschichtungstechnik nimmt heute eine wichtige Rolle in der Werkzeugherstellung ein. Die Mehrzahl aller Zerspanwerkzeuge wird heute beschichtet. Bei der Optimierung von Beschichtungen findet häufig die Methode des "Trial-and-Error" Anwendung. Die Entwicklung von neuen Schichten erfordert einen hohen experimentellen Aufwand, um das Einsatzverhalten zu untersuchen. Einen Ansatz, neue Werkzeuge und Beschichtungen mit reduziertem experimentellem Aufwand zu entwickeln, stellt die Modellierung dar. Das Aufbringen von Beschichtungen ist ein Eingriff in das tribologische System der Zerspanung. Dieses muss in der Modellierung berücksichtigt werden. In dieser Arbeit wurde die Tribomechanik von Beschichtungen beim Einsatz in der Zerspanung untersucht. Ziel war es, diese mit Hilfe von Modell- und Zerspanuntersuchungen in Kombination mit der Methode der finiten Elemente (FEM) grundlegend zu untersuchen. Die Einflussgrößen auf das tribologische Verhalten von Beschichtungen konnten mit Hilfe tribologischer Modelluntersuchungen identifiziert werden. Zudem wurden auch deren Wechselwirkungen analysiert. Hierzu waren umfassende experimentelle Versuche notwendig. Die Tribomechanik wurde für eine Vielzahl an Werkstoff-, Beschichtungs-, Kühlschmierstoff- und Parameterkombinationen untersucht. Dies umfasst auch die Bestimmung von Reibparametern. Als wesentliche Eingangsgrößen für die Genauigkeit der numerischen Berechnung konnten das Reibungsmodell und die Reibungsparameter, der thermische Übergang und die thermophysikalischen Eigenschaften der Schichten identifiziert werden. Für die thermophysikalischen Eigenschaften der Beschichtungen und Werkstoffe wurden temperaturabhängige Werte in die Materialmodelle implementiert. Ziel war es, den Prozess hinsichtlich der relevanten Aspekte in einem Modell abzubilden. Zur Verifizierung des Modells dienten Ergebnisse aus experimentellen Zerspanversuchen. Mit dem entwickelten FE-Modell war es möglich, grundsätzliche Einflussgrößen auf die Tribomechanik zu identifizieren. Es konnten geeignete Werte für die Einflussgrößen, wie z. B. den thermischen Übergangskoeffizienten mit Hilfe des FE-Modells ermittelt werden, die im Experiment nicht direkt messbar sind. Zudem war es möglich, den Einfluss der thermophysikalischen Eigenschaften der Schichten zu untersuchen. Hierbei konnten auch physikalische Grenzen betrachtet werden und damit die Relevanz bestimmter Einflussgrößen ermittelt werden.

Handbook Of Lubrication And Tribology

Author: Robert W. Bruce
Publisher: CRC Press
ISBN: 142006908X
Size: 63.55 MB
Format: PDF, Docs
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Since the publication of the best-selling first edition, the growing price and environmental cost of energy have increased the significance of tribology. Handbook of Lubrication and Tribology, Volume II: Theory and Design, Second Edition demonstrates how the principles of tribology can address cost savings, energy conservation, and environmental protection. This second edition provides a thorough treatment of established knowledge and practices, along with detailed references for further study. Written by the foremost experts in the field, the book is divided into four sections. The first reviews the basic principles of tribology, wear mechanisms, and modes of lubrication. The second section covers the full range of lubricants/coolants, including mineral oil, synthetic fluids, and water-based fluids. In the third section, the contributors describe many wear- and friction-reducing materials and treatments, which are currently the fastest growing areas of tribology, with announcements of new coatings, better performance, and new vendors being made every month. The final section presents components, equipment, and designs commonly found in tribological systems. It also examines specific industrial areas and their processes. Sponsored by the Society of Tribologists and Lubrication Engineers, this handbook incorporates up-to-date, peer-reviewed information for tackling tribological problems and improving lubricants and tribological systems. The book shows how the proper use of generally accepted tribological practices can save money, conserve energy, and protect the environment.

The Failure Mechanisms Of Coated Precision Glass Molding Tools

Author: Kyriakos Georgiadis
Publisher: Apprimus Wissenschaftsverlag
ISBN: 3863593715
Size: 23.86 MB
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Molding tools in precision glass molding fail easily, even with protective thin film coatings applied. In this work, various efficient methods for assessing glass-coating interactions are developed, including a new, automated testing rig. Analysis of the testing results provides a better understanding of these mechanisms and how they are influenced by material properties and process parameters, so that the appropriate measures can be taken to prolong the life of the molding tools.

Coating Technology For Vehicle Applications

Author: Sung Chul Cha
Publisher: Springer
ISBN: 3319147714
Size: 37.93 MB
Format: PDF, ePub
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This book describes current, competitive coating technologies for vehicles. The authors detail how these technologies impact energy efficiency in engines and with increased use of lightweight materials and by varying coatings applications can resolve wear problems, resulting in the increased lifecycle of dies and other vehicle components.

Tribology Of Elastomers

Author: Si-wei Zhang
Publisher: Elsevier
ISBN: 9780080543291
Size: 60.86 MB
Format: PDF, Mobi
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In spite of the practical importance of the friction, wear and lubrication of elastomers, limited literature is available on this topic. Addressing these needs, this book will give readers a complete understanding of rubber tribology and the key developments in this field over the last ten years. For the first time new and important achievements such as theories of rubber abrasion and surfacial mechanochemical effects of rubber wear are presented. The book pays special attention to the principles of rubber wear – a clear understanding of which is essential for those striving towards further increasing the working life of rubber. * Comprehensively and systematically covers main points of rubber tribology * The original choice of contents informs readers of the latest developments in the field *Meeting the needs of various readers - researchers, engineers, technicians, graduates

Tribology Of Polymeric Nanocomposites

Author: Klaus Friedrich
Publisher: Butterworth-Heinemann
ISBN: 0444594647
Size: 55.53 MB
Format: PDF, ePub
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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.

New Directions In Tribology

Author: Institution of Mechanical Engineers (Great Britain). Tribology Group
Publisher: Wiley
ISBN:
Size: 11.86 MB
Format: PDF, Kindle
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Tribology is the science and technology of interacting surfaces in relative motion, and includes the study of friction, wear and lubrication. New Directions in Tribology presents the thirty-eight papers presented as plenary or invited contributions at the World Technology Congress in London. The topics discussed at this historic event - the first international conference endorsed by almost every tribology society worldwide - covered a remarkably broad spectrum. The subjects covered reflect this breadth, and provide an excellent overview of activity and interest in the interdisciplinary subject of tribology. Key topics: history of tribology in the 20th century the question of lubrication by very thin oil films under immense pressure the wear of metals the relationship of future tribological research to real industrial problems a survey of the molecular and atomic origins of friction and boundary lubrication The contents of this volume originate from no fewer than fifteen different countries in five different continents: a truly international collection. New Directions in Tribology will be of lasting value not only as a comprehensive review of the achievements of tribology in the 20th century, but also as an inspiration for present and future engineers.

Scratching Of Materials And Applications

Author: Sujeet K. Kumar Sinha
Publisher: Elsevier
ISBN: 9780080468044
Size: 15.71 MB
Format: PDF, ePub
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The surface characterizations of engineering materials effects their scratch/abrasion/Mar resistance, coating adhesion/strength, and abrasive wear mechanism. Scratching of Materials and Applications has chapters devoted to direct industrial application and contains some of the important works that are being conducted. Scratch testing of materials has grown extensively since the earlier days of the Mohs Scale for ranking minerals according to their relative scratch resistance. This test has been used on metals, ceramics, glasses, polymers and coatings of various types and thicknesses. The chapters are grouped according to the type of the engineering materials used. The beginning chapters relate mostly to bulk polymers, which are followed by different types of coatings (hard wear resistant to the diamond-like carbon coatings) and finally, chapters on the application of scratching technique to metals and ceramics are included at the end of the book. Thus, the book covers a fairly wide spectrum of engineering materials which are useful to engineers and researchers. * Balances theoretical science with practical application * Demonstrates real-life applications within industry * Written experts in the fields of materials, tribology and surface mechanics

Surface Engineering Casebook

Author: J S Burnell-Gray
Publisher: Woodhead Publishing
ISBN: 9781855732605
Size: 38.49 MB
Format: PDF, Docs
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This book concisely and uniquely encompasses the principles of corrosion and wear as manifested in industrial failures and the solutions offered by surface engineering.