Author: P. A. BertrandPublisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
Orientation of Rf-sputter-deposited MoS2 Films
Author: P. A. BertrandScientific and Technical Aerospace Reports
Author: Effects of Crystallite Orientation on the Oxidation of MoS2 Thin Films
Author: P. D. FleischauerPublisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Thin films of MoS2 have been prepared, by rf sputter deposition, with different microstructures that show markedly different susceptibilities to oxidation or other environmental degradation. The films were exposed to air atmospheres of variable relative humidity, and the extent of oxidation was measured by means of Auger electron (AES) and X-ray photoelectron (XPS) spectroscopies. The morphologies of the films were determined by transmission electron microscopy. Depths of oxidation of the thin films were calculated from changes in AES peak-to-peak height ratios and in XPS peak intensity ratios through the use of standard escape-depth models for attenuation of electron emission by a layer of reacted material (in the present case, MoO3). The results show that MoS2 films whose crystallites are oriented with their basal planes at random angles to the plane of the substrate surface (designated Type I films) are oxidized to depths equal to or greater than 300 A, whereas films whose crystallite basal planes are coplanar with (parallel to) the substrate surface (Type II films) are oxidized to a maximum depth of 10 to 15 A. These results are interpreted in terms of relative reactivities of edge versus basal planes of the MoS2 crystallites. Keywords: Molybdenum disulfide; Solid lubrication; Thin-film chemistry; Thin-film oxidation; Crystallite orientation.
Mechanics of Coatings
Author: D. DowsonPublisher: Elsevier
ISBN: 0080875815
Category : Technology & Engineering
Languages : en
Pages : 511
Book Description
Mechanics of Coatings was chosen as the topic for the 16th Leeds-Lyon Symposium, as it was decided to be a timely opportunity to bring together experts of many disciplines connected with coatings to find ways of extending the industrial use of these coatings particularly in the field of tribology. The volume contains 51 papers divided into 20 sessions.
Metallurgical Coatings and Thin Films 1994
Author: Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 848
Book Description
A User's Guide to Vacuum Technology
Author: John F. O'HanlonPublisher: John Wiley & Sons
ISBN: 0471467154
Category : Science
Languages : en
Pages : 536
Book Description
In the decade and a half since the publication of the Second Edition of A User?s Guide to Vacuum Technology there have been many important advances in the field, including spinning rotor gauges, dry mechanical pumps, magnetically levitated turbo pumps, and ultraclean system designs. These, along with improved cleaning and assembly techniques have made contamination-free manufacturing a reality. Designed to bridge the gap in both knowledge and training between designers and end users of vacuum equipment, the Third Edition offers a practical perspective on today?s vacuum technology. With a focus on the operation, understanding, and selection of equipment for industrial processes used in semiconductor, optics, packaging, and related coating technologies, A User?s Guide to Vacuum Technology, Third Edition provides a detailed treatment of this important field. While emphasizing the fundamentals and touching on significant topics not adequately covered elsewhere, the text avoids topics not relevant to the typical user.
Coatings Tribology
Author: K. HolmbergPublisher: Elsevier
ISBN: 0080875920
Category : Science
Languages : en
Pages : 457
Book Description
This book presents a general view on thin surface coatings used for tribological applications and it is based on the current state of understanding. The mechanisms of friction and wear in sliding and rolling contacts of coated surfaces are described. Basic information on coating techniques, tribology and surface mechanisms is given. Based on collected experimental works information is given on the properties of thin soft coatings, such as polymer, lamellar solid and soft metal coatings; thin hard coatings, such as nitride, carbide, oxide, boride and diamond and diamond-like coatings; and multi-component and multi-layer coatings. The influence of interface layers and lubricants is highlighted. The methods available for characterization of coated surfaces and for mechanical and chemical evaluation of their tribological properties are described. Tribological evaluation methods for accelerated and field testing and the need for standardization of quality assurance procedures are discussed. A methodology for the selection of thin coatings for tribological applications is presented and knowledge based expert system approaches for coating selection are reviewed. For different application examples, the basic tribological contact mechanisms are described and the possibilities for improving their tribological properties by using surface coatings are discussed. The application examples include sliding and rolling bearings, gears, tools for cutting and forming, erosion resistant applications, magnetic recording systems and bio-medical implants.
A Users Guide to Vacuum Technology
Author: John F. O'HanlonPublisher: John Wiley & Sons
ISBN: 1394174225
Category : Technology & Engineering
Languages : en
Pages : 580
Book Description
A USERS GUIDE TO VACUUM TECHNOLOGY Choose and understand the vacuum technology that fits your project’s needs with this indispensable guide Vacuum technology is used to provide process environments for other kinds of engineering technology, making it an unsung cornerstone of hundreds of projects incorporating analysis, research and development, manufacturing, and more. Since it is very often a secondary technology, users primarily interested in processes incorporating it will frequently only encounter vacuum technology when purchasing or troubleshooting. There is an urgent need for a guide to vacuum technology made with these users in mind. For decades, A User’s Guide to Vacuum Technology has met this need, with a user-focused introduction to vacuum technology as it is incorporated into semiconductor, optics, solar sell, and other engineering processes. With an emphasis on otherwise neglected subjects and on accessibility to the secondary user of vacuum technology, it balances treatment of older systems that are still in use with a survey of the latest cutting-edge technologies. The result promises to continue as the essential guide to vacuum systems. Readers of the fourth edition of A User’s Guide to Vacuum Technology will also find: Expanded treatment of gauges, pumps, materials, systems, and best??operating practices Detailed discussion of cutting-edge topics like ultraclean vacuum and contamination control An authorial team with decades of combined research and engineering experience A User’s Guide to Vacuum Technology is essential for those entering emerging STEM programs, engineering professionals and graduate students working with a huge range of engineering technologies.
Metallurgical Coatings and Thin Films 1990
Author: B.D. SartwellPublisher: Elsevier
ISBN: 0444601104
Category : Technology & Engineering
Languages : en
Pages : 1129
Book Description
Metallurgical Coatings and Thin Films 1990 presents the Proceedings of the 17th International Conference on Metallurgical Coatings and 8th International Conference on Thin Films, held in San Diego, California on April 2-6, 1990. It contains 219 papers covering a wide range of topics related to metallurgical coatings and thin films, including high temperature coatings, hard coatings, diamond films, tribology, and ion beam modification. Organized into 99 chapters, this volume begins with a discussion of a thermochemical model for diamond growth from the vapor phase and an experiment in large area diamond coating using a combustion flame torch in its traversing mode. It then explores the properties of diamond films, preparation of diamond-like carbon films using various ion-beam-assisted techniques, deposition of diamond-like films by laser ablation, and coating of cubic BN films on different substrates. The book examines surface processes and rate-determining steps in plasma-induced chemical vapor deposition, and addition of rare earths to improve scale adherence on heat-resisting alloys and coatings. The reader is introduced to high temperature wear and clearance control coatings, thermal barrier coatings, and corrosion resistant coatings. The book also discusses modification of coatings/surfaces to reduce friction; the mechanics of the tribology of thin films systems; mechanochemical interactions in the tribological behavior of materials; analysis and micromechanical testing of tribological coatings; surface modification using directed ion beams; and industrial equipment and processes. This book is a valuable resource for students and researchers interested in metallurgical coatings and thin films.
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