Role of Oxide and Sulfide Additions in Solid Lubricant Compacts PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Role of Oxide and Sulfide Additions in Solid Lubricant Compacts PDF full book. Access full book title Role of Oxide and Sulfide Additions in Solid Lubricant Compacts by Phillip Warren Centers. Download full books in PDF and EPUB format.
Author: Phillip Warren Centers
Publisher:
ISBN:
Category : Friction
Languages : en
Pages : 452
Get Book Here
Book Description
Oxide and sulfide additions to molybdenum disulfide and graphite solid lubricants were evaluated experimentally. Results indicate that the tribologically beneficial effect of bulk additions to solid lubricants originates in the ability of the additive to deform under asperity contact conditions to permit the solid lubricant to attain and retain preferred tribological orientation for overall improvement in tribological condition. Such improvement is evident in scanning electron microscopic examination of worn compact surfaces. Thermal mechanical analyses of solid lubricant compacts and calculated asperity flash temperatures indicate that the mechanism proposed is plausible. Studies of antimony trioxide as an additive to molybdenum disulfide support the hypothesis. Previous hypothesis offered to explain the beneficial effect of Sb2O3, retardation of Mos2 oxidation by Sb2O3, or formation of a eutectic of antimony and molybdenum oxides to improve transfer film formation are refuted. In summary, lubricant compact properties and selection of bulk additions for improved tribological performance are hypothesized to be determined by the test or application conditions, the shear strength at asperity contact temperature of the additive and properties of the solid lubricant. Keywords: Solid Lubricant Additives.
Author: Phillip Warren Centers
Publisher:
ISBN:
Category : Friction
Languages : en
Pages : 452
Get Book Here
Book Description
Oxide and sulfide additions to molybdenum disulfide and graphite solid lubricants were evaluated experimentally. Results indicate that the tribologically beneficial effect of bulk additions to solid lubricants originates in the ability of the additive to deform under asperity contact conditions to permit the solid lubricant to attain and retain preferred tribological orientation for overall improvement in tribological condition. Such improvement is evident in scanning electron microscopic examination of worn compact surfaces. Thermal mechanical analyses of solid lubricant compacts and calculated asperity flash temperatures indicate that the mechanism proposed is plausible. Studies of antimony trioxide as an additive to molybdenum disulfide support the hypothesis. Previous hypothesis offered to explain the beneficial effect of Sb2O3, retardation of Mos2 oxidation by Sb2O3, or formation of a eutectic of antimony and molybdenum oxides to improve transfer film formation are refuted. In summary, lubricant compact properties and selection of bulk additions for improved tribological performance are hypothesized to be determined by the test or application conditions, the shear strength at asperity contact temperature of the additive and properties of the solid lubricant. Keywords: Solid Lubricant Additives.
Author: Gwidon Stachowiak
Publisher: Butterworth-Heinemann
ISBN: 0123977762
Category : Technology & Engineering
Languages : en
Pages : 883
Get Book Here
Book Description
Engineering Tribology, Fourth Edition is an established introductory reference focusing on the key concepts and engineering implications of tribology. Taking an interdisciplinary view, the book brings together the relevant knowledge from different fields needed to achieve effective analysis and control of friction and wear. Updated to cover recent advances in tribology, this new edition includes new sections on ionic and mesogenic lubricants, surface texturing, and multiscale characterization of 3D surfaces and coatings. Current trends in nanotribology are discussed, such as those relating to lubricants, coatings and composites, and geotribology is introduced. Suitable as an introductory text, a refresher or an on-the-job reference, Engineering Tribology, 4th Edition is intended for final year undergraduate and postgraduate students in mechanical engineering as well as professional engineers. It is also relevant to those working in materials engineering, applied chemistry, physics and bioengineering. - Offers a comprehensive overview of the mechanisms of wear, lubrication and friction in an accessible manner designed to aid novice engineers, non-specialists and students - Provides a reader-friendly approach to the subject using illustrations to break down the typically complex problems associated with tribology - Includes end-of-chapter problems to test understanding
Author: A.R. Lansdown
Publisher: Elsevier
ISBN: 0080536921
Category : Technology & Engineering
Languages : en
Pages : 407
Get Book Here
Book Description
In the 1970s and the early 1980s there was an enormous volume of research and development into the subject of molybdenum disulphide lubrication, much of which was supported by national governments for the benefit of defence, aviation or space activities. There were already some well-established practical guidelines for deciding when and how to use molybdenum disulphide, but there was still a considerable lack of universally-accepted theoretical understanding of some of the important and fundamental aspects of molybdenum disulphide technology. However, the state of knowledge was growing rapidly.In the past fifteen years the situation with regard to the technology of molybdenum disulphide lubrication has stabilised in many respects, and a measure of consensus has been reached about some of the mechanisms involved. The use of molybdenum disulphide has become routine in some industries, and there are many well-established and reputable commercial products available. Except in the high-technology field of physical deposition techniques, especially sputtering, the output of new research publications has fallen from perhaps two hundred a year in the 1970s to fewer than ten a year in the 1990s. In spite of this maturing of the subject, it is clear that there are still many aspects in which disagreements persist about the mechanisms involved, and which as a result are unclear or misunderstood among current, and perhaps even more importantly, potential users.One of the primary objectives of this book is to analyse the various aspects of molybdenum disulphide lubrication technology about which there are still disagreements or controversy, and to attempt to come to firm conclusions about some of the mechanisms involved. In particular, it will place emphasis on the importance and effects of burnishing and film consolidation.
Author: Michael Nosonovsky
Publisher: Springer Science & Business Media
ISBN: 3642236804
Category : Science
Languages : en
Pages : 630
Get Book Here
Book Description
Tribology is the study of friction, wear and lubrication. Recently, the concept of “green tribology” as “the science and technology of the tribological aspects of ecological balance and of environmental and biological impacts” was introduced. The field of green tribology includes tribological technology that mimics living nature (biomimetic surfaces) and thus is expected to be environmentally friendly, the control of friction and wear that is of importance for energy conservation and conversion, environmental aspects of lubrication and surface modification techniques, and tribological aspects of green applications such as wind-power turbines or solar panels. This book is the first comprehensive volume on green tribology. The chapters are prepared by leading experts in their fields and cover such topics as biomimetics, environmentally friendly lubrication, tribology of wind turbines and renewable sources of energy, and ecological impact of new technologies of surface treatment.
Author: Emad Omrani
Publisher: CRC Press
ISBN: 1351650114
Category : Technology & Engineering
Languages : en
Pages : 243
Get Book Here
Book Description
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.
Author: Roy Cox
Publisher: SAE International
ISBN: 0768073812
Category : Technology & Engineering
Languages : en
Pages : 526
Get Book Here
Book Description
Roy Cox provides readers with a thorough presentation of the topic, beginning with the earliest work on brakes by Frood in the early 1900s and friction studies by daVinci in the 1400s. From there, details about the processes of wear and the components of tribological systems are presented. Methods of manufacturing friction materials are described, and the elements of friction material are detailed—binders, fibers, abrasives, and lubricants. A large portion of the book delves deeply into materials for binders, resins, fibers, abrasives, lubricants, and fillers, providing background on the various materials, their pros and cons, and numerous ways they can be applied to friction systems. Much of this discussion focuses on the compositional makeup and effects of ingredients as they relate to the wear and friction performance of the final product. Readers will gain a solid background about tribology, as well as a solid understanding of matrices, fibers and additives that make up engineered tribological composites. They will learn how manufacturing affects these composites, along with how friction and wear affect those materials. They will gain a better understanding of which materials provide the optimum balance of cost, friction and wear for various applications, enabling them to better create and apply engineered tribological composites for whatever application is at hand.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 964
Get Book Here
Book Description
Author: Peter L. Conley
Publisher: John Wiley & Sons
ISBN: 9780471121411
Category : Technology & Engineering
Languages : en
Pages : 814
Get Book Here
Book Description
Die Entwicklung von Weltraumfahrzeugen ist ein Industriezweig, der in den vergangenen drei Jahrzehnten beständig gewachsen ist. Heute ist es eine komplexe technische, internationale Branche. Dieses Buch vermittelt Informationen über alle Mechanismen von Weltraumfahrzeugen. Spitzenexperten auf diesem Gebiet, die in verschiedenen Disziplinen zu Hause sind, haben einen wichtigen Beitrag hierzu geleistet. Das Buch ist in drei Teile untergliedert: Grundlagen und technische Eigenschaften wichtiger Materialien; Entwicklung und Verhalten kritischer Komponenten und eine Einführung in Fahrzeugniveau-Analysen und Integrationstechniken. (01/98)
Author: Haidou Wang
Publisher: Springer Science & Business Media
ISBN: 3642231020
Category : Technology & Engineering
Languages : en
Pages : 316
Get Book Here
Book Description
"Micro and Nano Sulfide Solid Lubrication" covers the basic principles of sulfide solid lubrication, which is an important field of tribology, an effective means of reducing friction and wear on machine parts, and is closely related to the broader problem of saving energy and materials. This book discusses the low-temperature sulfuration technology which was first developed in China, as well as the two-step methods for preparing various sulfide lubrication films (coatings) created by the authors, which are described in detail. This book is intended for researchers in the fields of tribology, materials science, mechanical design, and structural design. Dr. Haidou Wang and Binshi Xu are both professors at the National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, China; Jiajun Liu is a professor at the Department of Mechanical Engineering, Tsinghua University, China.
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 2152
Get Book Here
Book Description
Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
