Download or read book Comparative Surface and Nano tribological Characteristics of Nanocomposite Diamond like Carbon Thin Films Doped by Silver written by and published by . This book was released on 2008 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study we have deposited silver-containing hydrogenated and hydrogen-free diamond-like carbon (DLC) nanocomposite thin films by plasma immersion ion implantation-deposition methods. The surface and nano-tribological characteristics were studied by x-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and nano-scratching experiments. The silver doping was found to have no measurable effect on sp2-sp3 hybridization of the hydrogenated DLC matrix and only a slight effect on the hydrogen-free DLC matrix. The surface topography was analyzed by surface imaging. High- and low-order roughness determined by AFM characterization was correlated to the DLC growth mechanism and revealed the smoothing effect of silver. The nano-tribological characteristics were explained in terms of friction mechanisms and mechanical properties in correlation to the surface characteristics. It was discovered that the adhesion friction was the dominant friction mechanism; the adhesion force between the scratching tip and DLC surface was decreased by hydrogenation and increased by silver doping.
Download or read book Diamond and Carbon Composites and Nanocomposites written by Mahmood Aliofkhazraei and published by BoD – Books on Demand. This book was released on 2016-06-29 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past few years, scientists have achieved significant successes in nanoscience and technology. Nanotechnology is a branch of science that deals with fine structures and materials with very small dimensions - less than 100 nm. The composite science and technology have also benefits from nanotechnology. This book collects new developments about diamond and carbon composites and nanocomposites and their use in manufacturing technology.
Download or read book Nanocomposite Thin Films And Coatings Processing Properties And Performance written by Sam Zhang and published by World Scientific. This book was released on 2007-10-08 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials development has reached a point where it is difficult for a single material to satisfy the needs of sophisticated applications in the modern world. Nanocomposite films and coatings achieve much more than the simple addition of the constitutents — the law of summation fails to work in the nano-world. This book encompasses three major parts of the development of nanocomposite films and coatings: the first focuses on processing and properties, the second concentrates on mechanical performance, and the third deals with functional performance, including wide application areas ranging from mechanical cutting to solar energy and from electronics to medicine./a
Download or read book Synthesis Structure and Characterization of Silver Doped Diamond Like Carbon Thin Films written by Pankaj Jyoti Hazarika and published by ProQuest. This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond like carbon (DLC) films have gained grounds in the biomedical field as an inert, biocompatible, low friction and wear resistant coating and are widely used in heart valves, coronary artery stents, dental implants, knee prosthesis and other vascular devices. In addition, Ag nanoparticles/films can prevent the formation of biofilm on biomedical implants by degrading the metabolic activities like permeability and respiration and also impair DNA replicability. Thus, Ag-doped DLC (Ag-DLC) can serve as a multifunctional bio coating combining desirable antibacterial and physical/mechanical characteristics. In the present study, Ag-DLC films were synthesized utilizing a hybrid Plasma CVD and Magnetron sputtering process in a CH4/Ar glow discharge. Nanocomposite films containing Ag nanoparticles in an amorphous DLC matrix with various amounts of Ag were synthesized and characterized by Transmission Electron Microscope (TEM), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS). Tribological experiments were performed to assess the frictional behavior and wear resistance of the Ag-DLC films as a function of Ag content. Anodic polarization experiments were conducted to characterize the electrochemical behavior of the Ag-DLC films. TEM results revealed that Ag nanoparticles of 4-7 nm in size were uniformly distributed in an amorphous DLC matrix. Microhardness of DLC films exhibited a hardness of 22 GPa and it gradually decreased with increasing Ag content in the films. Wear rate of DLC film was 1.9 x 10-8 mm3/Nm and it increased to 8 x 10-7 mm3/Nm for Ag-DLC (5% Ag) film. Electrochemical behavior experiments showed that Ag-DLC films exhibited an inert behavior compared to the pure silver.
Download or read book Synthesis and Tribological Applications of Hybrid Materials written by Mohammad Jawaid and published by John Wiley & Sons. This book was released on 2018-12-10 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-depth knowledge on tribological applications of hybrid composites Synthesis and Tribological Applications of Hybrid Materials provides a comprehensive overview of tribological properties of hybrid composites. The book offers an understanding of the processes, materials, techniques and mechanisms related to the tribological concepts and includes information on the most recent developments in the field. With contributions from an international panel of experts, the book discusses the synthesis and characterization of hybrid materials, as well as their applications in biotechnological and biomedical fields. The book covers a wide-range of versatile topics such as: Tribological assessment on accelerated aging bones in polymeric condition; Nano fracture and wear testing on natural bones; Tribological behaviour of glass fiber with fillers reinforced hybrid polymer composites and jute/glass hybrid composites; Wear properties of glass fiber hybrid, and acid- and silane-modified CNT filled hybrid glass/kenaf epoxy composites; Hybrid natural fibre composites as a friction material; and much more. This important resource: -Discusses recent advancements in the field of tribology and hybrid materials -Offers a guide for professionals in the fields of materials science, mechanical engineering, biomaterials, chemistry, physics and nanotechnology -Integrates theory, synthesis and properties of nybrid materals as well as their applications -Offers an outlook to the future of this burgeoning technology Written for materials scientists, surface chemists, bioengineers, mechanical engineers, engineering scientists and chemical industry professionals, Synthesis and Tribological Applications of Hybrid Materials is a comprehensive resource that explores the most recent developments in the field.
Download or read book Synthesis of Silver diamond Like Carbon Thin Films by Magnetron Sputtering written by Venkatesh Majji and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond-like carbon thin films are been used in wide range of applications due to their attractive tribological properties. Metal-doped DLC films have significant properties which make them compatible to use in larger variety of applications. The present study examines the dispersion and their effect on various tribological properties when Ag is incorporated into the DLC thin films. These Ag-DLC nanocomposite films were synthesized by a hybrid CVD and magnetron sputtering process in a discharge composed of CH4, and Ar atmosphere. These DLC and Ag-DLC films were characterized by Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy. Tribological tests were carried out to measure the frictional and wear behavior of the Ag-DLC films as a function of Ag content. The TEM cross sectional studies revealed that Ag is present as Ag nanoparticles that were distributed uniformly throughout an amorphous DLC matrix. XPS analysis confirmed that Ag in the nanoparticles was present in the metallic form. Increasing the Ag content in the film, reduced its sp3 content. The incorporation of these nanoparticles causes a reduction in hardness in Ag-DLC when compared with pure DLC films. Microhardness of DLC films exhibits values up to a maximum of 16 GPa and gradually decreases with increasing in Ag content. FTIR and Raman studies confirmed that the films contain a significant amount of hydrogen, and with an increase in the Ag content in the DLC film results in an increase in sp2 carbon content. Finally, the friction behavior of the Ag-DLC films showed a comparable performance with that of DLC films with a coefficient of friction as low as 0.1. The DLC films exhibited a lower wear rate of 5.51x10−8 mm3/Nm than Ag-DLC films. The wear rate in the Ag-DLC films gradually increased with increasing Ag content but it remained at low levels (i.e., up to 1.7x10−7 mm3/Nm). This is consistent with the higher sp2 content of the Ag-DLC films.
Download or read book Water and Oil Repellent Surfaces written by Ioannis Karapanagiotis and published by MDPI. This book was released on 2020-11-18 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials of extreme wetting properties have received significant attention, as they offer new perspectives providing numerous potential applications. Water- and oil-repellent surfaces can be used, for instance, in the automobile, microelectronics, textile and biomedical industries; in the protection and preservation of constructions, buildings and cultural heritage; and in several other applications relevant to self-cleaning, biocide treatments, oil–water separation and anti-corrosion, just to name a few. The papers included in this book present innovative production methods of advanced materials with extreme wetting properties that are designed to serve some of the abovementioned applications. Moreover, the papers explore the scientific principles behind these advanced materials and discuss their applications to different areas of coating technology.
Download or read book Multifunctional Nanocomposite Co containing Diamondlike Carbon Thin Films written by Fengli Wang and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diamond Thin Films An Emerging Technology Past Present and Future written by Ashok Kumar Dua and published by Trans Tech Publications Ltd. This book was released on 2004-08-08 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond, as well as being a precious gem, is a versatile material par excellence. No other material comes anywhere near to matching its properties, which are both extreme, and also expressed in rare combinations. However, natural diamonds, and those synthesised under high sandpressure temperatures, are too expensive or small for many technological applications. These limitations can be overcome by using large-area diamond coatings; chemically bonded to inexpensive non-diamond surfaces. The consequent economic advantages provide the driving force for much diamond-related research and technology.
Download or read book Nanocomposite W C H Diamond like Carbon Coatings written by Carl Gunnar Christian Strondl and published by . This book was released on 2007 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Micro Nano Tribology written by Bharat Bushan and published by CRC Press. This book was released on 2020-10-28 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Handbook of Micro/Nanotribology addresses the rapid evolution within this field, serving as a reference for the novice and the expert alike. Two parts divide this handbook: Part I covers basic studies, and Part II addresses design, construction, and applications to magnetic storage devices and MEMS. Discussions include: surface physics and methods for physically and chemically characterizing solid surfaces roughness characterization and static contact models using fractal analysis sliding at the interface and friction on an atomic scale scratching and wear as a result of sliding nanofabrication/nanomachining as well as nano/picoindentation lubricants for minimizing friction and wear surface forces and microrheology of thin liquid films measurement of nanomechanical properties of surfaces and thin films atomic-scale simulations of interfacial phenomena micro/nanotribology and micro/nanomechanics of magnetic storage devices This comprehensive book contains 16 chapters contributed by more than 20 international researchers. In each chapter, the presentation starts with macroconcepts and then lead to microconcepts. With more than 500 illustrations and 50 tables, Handbook of Micro/Nanotribology covers the range of relevant topics, including characterization of solid surfaces, measurement techniques and applications, and theoretical modeling of interfaces. What's New in the Second Edition? New chapters on: AFM instrumentation Surface forces and adhesion Design and construction of magnetic storage devices Microdynamical devices and systems Mechanical properties of materials in microstructure Micro/nanotribology and micro/nanomechanics of MEMS devices
Download or read book Carbon Nanomaterials Modeling Design and Applications written by Kun Zhou and published by CRC Press. This book was released on 2019-07-17 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanomaterials: Modeling, Design, and Applications provides an in-depth review and analysis of the most popular carbon nanomaterials, including fullerenes, carbon nanotubes, graphene and novel carbon nanomaterial-based membranes and thin films, with emphasis on their modeling, design and applications. This book provides basic knowledge of the structures, properties and applications of carbon-based nanomaterials. It illustrates the fundamental structure-property relationships of the materials in both experimental and modeling aspects, offers technical guidance in computational simulation of nanomaterials, and delivers an extensive view on current achievements in research and practice, while presenting new possibilities in the design and usage of carbon nanomaterials. This book is aimed at both undergraduate and graduate students, researchers, designers, professors, and professionals within the fields of materials science and engineering, mechanical engineering, applied physics, and chemical engineering.
Download or read book Handbook of Nanoceramic and Nanocomposite Coatings and Materials written by Abdel Salam Hamdy Makhlouf and published by Butterworth-Heinemann. This book was released on 2015-05-08 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this new handbook, top researchers from around the world discuss recent academic and industrial advances in designing ceramic coatings and materials. They describe the role of nanotechnology in designing high performance nanoceramic coatings and materials in terms of the unique advantages that can be gained from the nano scale, including the latest techniques for the synthesis and processing of ceramic and composite coatings for different applications. Focuses on the most advanced technologies for industry-oriented nano-ceramic and nano-composite coatings, including recent challenges for scaling up nano-based coatings in industry Covers the latest evaluation methods for measuring coatings performance Discusses novel approaches for improving the performance of ceramic and composite coatings and materials via nanotechnology Provides the most recent and advanced techniques for surface characterization
Download or read book A Tribological Mechanical Study of Ion Assisted Diamond like Carbon Thin Films written by Peter Stuart Holiday and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Friction and Wear Properties of a DLC Based Functionally Gradient Nanocomposite Coatings written by and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructural Modeling and Design Optimization of Adaptive Thin Film Nanocomposite Coatings For Durability and Wear written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive thin-film nanocomposite coatings comprised of crystalline ductile phases of gold and molybdenum disulfide, and brittle phases of diamond like carbon (DLC) and ytrria stabilized zirconia (YSZ) have been investigated by specialized microstructurally-based finite-element techniques. A new microstructural computational technique for efficiently creating models of nanocomposite coatings with control over composition, grain size, spacing and morphologies has been developed to account for length scales that range from nanometers to millimeters for efficient computations. The continuum mechanics model at the nanometer scale was verified with molecular dynamic models for nanocrystalline diamond. Using this new method, the interrelated effects of microstructural characteristics such as grain shapes and sizes, matrix thicknesses, local material behavior due to interfacial stresses and strains, varying amorphous and crystalline compositions, and transfer film adhesion and thickness on coating behavior have been investigated. A mechanistic model to account for experimentally observed transfer film adhesion modes and changes in thickness was also developed. One of the major objectives of this work is to determine optimal crystalline and amorphous compositions and behavior related to wear and durability over a wide range of thermo-mechanical conditions. The computational predictions, consistent with experimental observations, indicate specific interfacial regions between DLC and ductile metal inclusions are critical regions of stress and strain accumulation that can be precursors to material failure and wear. The predicted results underscore a competition between the effects of superior tribological properties associated with MoS2 and maintaining manageable stress levels that would not exceed the coating strength. Varying the composition results in tradeoffs between lubrication, toughness, and strength, and the effects of critical stresses and strains can be controlled fo.
Download or read book Synthesis and Characterization of Diamond like Carbon and DLC MoS2 Composite Thin Films written by Hamid Niakan and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
