Frictional Behavior Of Diamondlike Carbon Films In Vacuum And Under Varying Water Vapor Pressure

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Frictional Behavior of Diamondlike Carbon Films in Vacuum and Under Varying Water Vapor Pressure

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Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)

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Download or read book Frictional Behavior of Diamondlike Carbon Films in Vacuum and Under Varying Water Vapor Pressure written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, we investigated the frictional behavior of both hydrogenated and hydrogen-free diamondlike carbon (DLC) films in high vacuum (10−6 Pa) at room temperature. Water was also introduced into the vacuum chamber to elucidate its effects on DLC film tribology. The hydrogen-free DLC (also referred to as tetrahedral amorphous carbon, or ta-C) was produced by an arc-PVD process, and the highly hydrogenated DLC was produced by plasma-enhanced chemical-vapor deposition. Tribological measurements of these films were made with a pin-on-disc machine with coated steel balls and coated steel discs in matched pairs under a 1 N load. The ball/disk pairs were rotated at sliding speeds in the range of 0.025-0.075 m/s. In vacuum, the steady-state friction coefficient of ta-C was of the order of 0.6 and the wear was severe, whereas for the highly hydrogenated film, friction was below 0.01, and in an optical microscope no wear could be detected. Adding water vapor to the sliding ta-C system in a vacuum chamber caused friction to decrease monotonically from 0.6 to (almost equal to)0.05. In contrast, adding water vapor to the sliding DLC system caused the friction to increase linearly with pressure from 0.01 to 0.07. The results illustrate the importance of taking into account environmental conditions, especially the presence of water, when DLC films are being considered for a given application.

Tribology of Diamond-like Carbon Films

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Author : Christophe Donnet
Publisher : Springer Science & Business Media
ISBN 13 : 0387498915
Total Pages : 673 pages
Book Rating : 4.3/5 (874 download)

Book Synopsis Tribology of Diamond-like Carbon Films by : Christophe Donnet

Download or read book Tribology of Diamond-like Carbon Films written by Christophe Donnet and published by Springer Science & Business Media. This book was released on 2007-12-06 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights some of the most important structural, chemical, mechanical and tribological characteristics of DLC films. It is particularly dedicated to the fundamental tribological issues that impact the performance and durability of these coatings. The book provides reliable and up-to-date information on available industrial DLC coatings and includes clear definitions and descriptions of various DLC films and their properties.

Contact mechanics perspective of tribology

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Author : Irina Goryacheva
Publisher : Frontiers Media SA
ISBN 13 : 2889667618
Total Pages : 391 pages
Book Rating : 4.8/5 (896 download)

Book Synopsis Contact mechanics perspective of tribology by : Irina Goryacheva

Download or read book Contact mechanics perspective of tribology written by Irina Goryacheva and published by Frontiers Media SA. This book was released on 2021-06-04 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Coatings Tribology

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Author : Kenneth Holmberg
Publisher : Elsevier
ISBN 13 : 0080931464
Total Pages : 577 pages
Book Rating : 4.0/5 (89 download)

Book Synopsis Coatings Tribology by : Kenneth Holmberg

Download or read book Coatings Tribology written by Kenneth Holmberg and published by Elsevier. This book was released on 2009-03-18 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Effects of Hydrogen on Materials

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Author : Brian Somerday
Publisher : ASM International
ISBN 13 : 1615031367
Total Pages : 781 pages
Book Rating : 4.6/5 (15 download)

Book Synopsis Effects of Hydrogen on Materials by : Brian Somerday

Download or read book Effects of Hydrogen on Materials written by Brian Somerday and published by ASM International. This book was released on 2009-01-01 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and commercial activity in developing hydrogen as a fuel is driving increased attention on hydrogen-materials interactions. In particular, a renewed and intensifying interest in developing hydrogen fuel cells has prompted extensive research with the objective to enable the safe design of components for transporting and storing hydrogen fuel. This volume is the proceedings from the premier conference on hydrogen effects in materials, bridging scientific research and engineering applications. The proceedings volume highlights several themes: the technological importance of hydrogen effects on structural materials; the impact of bridging science and engineering; and the opportunity to apply new research tools, including simulation techniques as well as experimental methods.

Protection of Materials and Structures From the Space Environment

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Author : Jacob Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 3642302289
Total Pages : 606 pages
Book Rating : 4.6/5 (423 download)

Book Synopsis Protection of Materials and Structures From the Space Environment by : Jacob Kleiman

Download or read book Protection of Materials and Structures From the Space Environment written by Jacob Kleiman and published by Springer Science & Business Media. This book was released on 2012-09-22 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the 10th International Space Conference on “Protection of Materials and Structures from Space Environment” ICPMSE-10J, since its inception in 1992, have been to facilitate exchanges between members of the various engineering and science disciplines involved in the development of space materials, including aspects of LEO, GEO and Deep Space environments, ground-based qualification, and in-flight experiments and lessons learned from operational vehicles that are closely interrelated to disciplines of the atmospheric sciences, solar-terrestrial interactions and space life sciences. The knowledge of environmental conditions on and around the Moon, Mars, Venus and the low Earth orbit as well as other possible candidates for landing such as asteroids have become an important issue, and protecting both hardware and human life from the effects of space environments has taken on a new meaning in light of the increased interest in space travel and colonization of other planets. And while many material experiments have been carried out on the ground and in open space in the last 50 years (LDEF, MEEP, SARE, MISSE, AOP, DSPSE, ESEM, EURECA, HST, MDIM, MIS, MPID, MPAC and SEED), many questions regarding the environmental impact of space on materials remain either poorly understood or unanswered. The coming generations of scientists will have to continue this work and tackle new challenges, continuing to build the level of confidence humans will need to continue the colonization of space. It is hoped that the proceedings of the ICPMSE-10J presented in this book will constitute a small contribution to doing so.

11th International Ceramics Congress

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Author : P. Vincenzini
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038130931
Total Pages : 2750 pages
Book Rating : 4.0/5 (381 download)

Book Synopsis 11th International Ceramics Congress by : P. Vincenzini

Download or read book 11th International Ceramics Congress written by P. Vincenzini and published by Trans Tech Publications Ltd. This book was released on 2006-10-10 with total page 2750 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents selected papers from over one thousand scientific and technical contributions effectively presented at CIMTEC 2006. Altogether, the collection offers an outstanding wealth of up-to-date information on this field.

Advanced Analytical Methods in Tribology

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Author : Martin Dienwiebel
Publisher : Springer
ISBN 13 : 3319998978
Total Pages : 332 pages
Book Rating : 4.3/5 (199 download)

Book Synopsis Advanced Analytical Methods in Tribology by : Martin Dienwiebel

Download or read book Advanced Analytical Methods in Tribology written by Martin Dienwiebel and published by Springer. This book was released on 2018-10-04 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the basics and methods of nanoscale analytical techniques for tribology field. It gives guidance to the application of mechanical, microstructural, chemical characterization methods and topography analysis of materials. It provides an overview of the of state-of-the-art for researchers and practitioners in the field of tribology. It shows different examples to the application of mechanical, microstructural, chemical characterization methods and topography analysis of materials. Friction and Wear phenomena are governed by complexe processes at the interface of sliding surfaces. For a detailed understanding of these phenomena many surface sensitive techniques have become available in recent years. The applied methods are atom probe tomography, in situ TEM, SERS, NEXAFS, in situ XPS, nanoindentation and in situ Raman spectroscopy. A survey of new related numerical calculations completes this book. This concerns ab-initio coupling, numerical calculations for mechanical aspects and density functional theory (DFT) to study chemical reactivity.

Materials Innovations in an Emerging Hydrogen Economy

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Author : G. Wicks
Publisher : John Wiley & Sons
ISBN 13 : 0470483415
Total Pages : 258 pages
Book Rating : 4.4/5 (74 download)

Book Synopsis Materials Innovations in an Emerging Hydrogen Economy by : G. Wicks

Download or read book Materials Innovations in an Emerging Hydrogen Economy written by G. Wicks and published by John Wiley & Sons. This book was released on 2009-03-27 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the Materials Innovations in an Emerging Hydrogen Economy Conference in Februrary 2008 in Cocoa Beach, Florida. It provides a useful one-stop resource for understanding the most important issues in the research and applications of materials innovations. The text features logically organized and carefully selected articles, organized into: International Overviews; Hydrogen Storage; Hydrogen Production; Hydrogen Delivery; and Leakage Detection/Safety. This comprises an essential resource for industrial and academic chemists and engineers.

Friction and Wear Performance of Diamondlike Carbon Films Grown in Various Source Gas Plasmas

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Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (684 download)

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Download or read book Friction and Wear Performance of Diamondlike Carbon Films Grown in Various Source Gas Plasmas written by and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the authors investigated the effects of various source gases (methane, ethane, ethylene, and acetylene) on the friction and wear performance of diamondlike carbon (DLC) films prepared in a plasma enhanced chemical vapor deposition (PECVD) system. Films were deposited on AISI H13 steel substrates and tested in a pin-on-disk machine against DLC-coated M50 balls in dry nitrogen. They found a close correlation between friction coefficient and source gas composition. Specifically, films grown in source gases with higher hydrogen-to-carbon ratios exhibited lower friction coefficients and higher wear resistance than films grown in source gases with lower hydrogen-to-carbon (H/C) ratios. The lowest friction coefficient (0.014) was achieved with a film derived from methane with an WC ratio of 4, whereas the coefficient of films derived from acetylene (H/C = 1) was of 0.15. Similar correlations were observed for wear rates. Specifically, films derived from gases with lower H/C values were worn out and the substrate material was exposed, whereas films from methane and ethane remained intact and wore at rates that were nearly two orders of magnitude lower than films obtained from acetylene.

Protection of Materials and Structures from Space Environment

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Author : Jacob I. Kleiman
Publisher : AIP Conference Proceedings / M
ISBN 13 :
Total Pages : 730 pages
Book Rating : 4.:/5 (318 download)

Book Synopsis Protection of Materials and Structures from Space Environment by : Jacob I. Kleiman

Download or read book Protection of Materials and Structures from Space Environment written by Jacob I. Kleiman and published by AIP Conference Proceedings / M. This book was released on 2009-01-15 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference proceedings are discussing the latest developments in the area of the effects of the space environment on materials and structures and the ways to prevent and/or reduce them. The effects of various space environment factors like atomic oxygen, vacuum ultraviolet radiation, charging, micrometeoroids, meteoroid showers, etc. on materials and structures in various space conditions are discussed. In addition the ways to prevent these effects or reduce them through protection by coatings or modification of affected surfaces are considered in the book. The discussions on development of predictive models of material erosion that will allow the materials engineers and designers of future spacecraft to evaluate materials' behavior is continued from the past meetings.

Synthesis of Diamondlike Carbon Films with Superlow Friction and Wear Properties

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Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (684 download)

Book Synopsis Synthesis of Diamondlike Carbon Films with Superlow Friction and Wear Properties by :

Download or read book Synthesis of Diamondlike Carbon Films with Superlow Friction and Wear Properties written by and published by . This book was released on 2000 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the authors introduce a new diamondlike carbon (DLC) film providing a friction coefficient of 0.001 and wear rates of 10−9 to 10−1° mm3/N.m in inert-gas environments (e.g., dry nitrogen and argon). The film was grown on steel and sapphire substrates in a plasma enhanced chemical vapor deposition system that uses using a hydrogen-rich plasma. Employing a combination of surface and structure analytical techniques, they explored the structural chemistry of the resultant DLC films and correlated these findings with the friction and wear mechanisms of the films. The results of tribological tests under a 10-N load (creating initial peak Hertz pressures of 1 and 2.2 GPa on steel and sapphire test pairs, respectively) and at 0.2 to 0.5 m/s sliding velocities indicated that a close correlation exists between the friction and wear coefficients of DLC films and the source gas chemistry. Specifically, films grown in source gases with higher hydrogen-to-carbon ratios had the lowest fiction coefficients and the highest wear resistance. The lowest friction coefficient (0.001) was achieved with a film on sapphire substrates produced in a gas discharge plasma consisting of 25% methane and 75% hydrogen.

Diamond-like Carbon Films

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Author : Yuto S. Tanaka
Publisher : Nova Biomedical Books
ISBN 13 : 9781613247914
Total Pages : 0 pages
Book Rating : 4.2/5 (479 download)

Book Synopsis Diamond-like Carbon Films by : Yuto S. Tanaka

Download or read book Diamond-like Carbon Films written by Yuto S. Tanaka and published by Nova Biomedical Books. This book was released on 2012-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents current research from across the globe in the study of diamond-like carbon films. Topics discussed include the peculiarities of ion-beam synthesis of carbon-based phases; electron field emission properties of non-metal and metal doped diamond like carbon; internal stress and its reduction of hydrogenated diamond-like carbon thin films deposited by plasma CVD methods; incorporating crystalline diamond particles in diamond-like carbon films to improve their properties and diamond-like carbon films applied as an alignment layer for LCDs.

Plasma-deposited Amorphous Hydrogenated Carbon Films and Their Tribological Properties

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Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (317 download)

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Download or read book Plasma-deposited Amorphous Hydrogenated Carbon Films and Their Tribological Properties written by and published by . This book was released on 1989 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the World Tribology Congress III--2005

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Publisher :
ISBN 13 :
Total Pages : 1040 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Proceedings of the World Tribology Congress III--2005 by :

Download or read book Proceedings of the World Tribology Congress III--2005 written by and published by . This book was released on 2005 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Lubrication by Diamond and Diamondlike Carbon Coatings

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Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (317 download)

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Download or read book Lubrication by Diamond and Diamondlike Carbon Coatings written by and published by . This book was released on 1997 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Friction and Wear of Ion-Beam-Deposited Diamondlike Carbon on Chemical-Vapor-Deposited, Fine-Grain Diamond

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Author : Kazuhisa Miyoshi
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (317 download)

Book Synopsis Friction and Wear of Ion-Beam-Deposited Diamondlike Carbon on Chemical-Vapor-Deposited, Fine-Grain Diamond by : Kazuhisa Miyoshi

Download or read book Friction and Wear of Ion-Beam-Deposited Diamondlike Carbon on Chemical-Vapor-Deposited, Fine-Grain Diamond written by Kazuhisa Miyoshi and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: