Influence Of The Particle Flux On Surface Modifications Of Tungsten

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Helium Nano-bubble Formation in Tungsten

Author : Matt Thompson
Publisher : Springer
ISBN 13 : 3319960113
Total Pages : 125 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Helium Nano-bubble Formation in Tungsten by : Matt Thompson

Download or read book Helium Nano-bubble Formation in Tungsten written by Matt Thompson and published by Springer. This book was released on 2018-08-01 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: This PhD thesis characterises the damage that occurs in tungsten when it is exposed to a fusion-like environment. The book presents pioneering work on the use of grazing-incidence small-angle X-ray scattering (GISAXS) to measure nano-bubble formation in tungsten exposed to helium plasma. The phenomenon of nanoscale bubble formation within metals during helium plasma exposure can lead to undesirable changes in the material properties, such as complex nanoscale surface modification or a reduction in thermal conductivity. As a result of this work, it is now possible to quantify how nanobubble behaviour changes within different materials, and under different plasma conditions. In 2015 the author published the first GISAXS study of helium-induced nanobubble formation in tungsten, demonstrating the viability of using GISAXS for this work. This paper has generated significant interest from the international fusion community and was selected as one of the highlights for the journal Nuclear Fusion.

Thermal Shock Behaviour of Different Tungsten Grades Under Varying Conditions

Author : Oliver Marius Wirtz
Publisher : Forschungszentrum Jülich
ISBN 13 : 3893368426
Total Pages : 151 pages
Book Rating : 4.8/5 (933 download)

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Book Synopsis Thermal Shock Behaviour of Different Tungsten Grades Under Varying Conditions by : Oliver Marius Wirtz

Download or read book Thermal Shock Behaviour of Different Tungsten Grades Under Varying Conditions written by Oliver Marius Wirtz and published by Forschungszentrum Jülich. This book was released on 2013 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction

Author : Michael Hubeny
Publisher : Springer
ISBN 13 : 303012536X
Total Pages : 137 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction by : Michael Hubeny

Download or read book The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction written by Michael Hubeny and published by Springer. This book was released on 2019-02-15 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence in plasma surface interaction holds crucial uncertainties for its impact on material erosion in the operation of fusion reactors. In this thesis, the design, development and operation of a Thomson scattering diagnostic and its novel implementation with fast visual imaging created a versatile tool to investigate intermittently occuring plasma oscillations. Specifically, ballistic transport events in the plasma edge, constituting turbulent transport, have been targeted in this thesis. With the help of a custom photon counting algorithm, the conditional averaging technique was applied on Thomson scattering for the first time to allow spatial and pseudo-time-resolved measurements. Since plasma turbulence and the emerging transport phenomena are comparable in most magnetized devices, the diagnostic development and the results from the linear plasma device PSI-2 are useful for an implementation of similar techniques in larger fusion experiments. Furthermore, the obtained results indicate a strong enhancement of erosion with turbulent transport and thus underline the importance of dedicated experiments investigating plasma turbulence in the framework of erosion in future fusion reactors.

Paint and Coatings Industry

Author : Faris Yılmaz
Publisher : BoD – Books on Demand
ISBN 13 : 1789851610
Total Pages : 138 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Paint and Coatings Industry by : Faris Yılmaz

Download or read book Paint and Coatings Industry written by Faris Yılmaz and published by BoD – Books on Demand. This book was released on 2019-01-30 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some of the futuristic applications are nanotubes for electrically conductive coatings and to increase the rate of reaction of thermoset resins; organosilane dendrimer coatings; buckyball coatings for machine parts; and metals for conductive coatings in inks. The technology is limited to substantially specialized applications due to the high cost per unit volume needed to reduce the size of the particles and the need to add surface modifiers to prevent the particles from agglomerating. Recent research efforts focus primarily on the functionalization of the particle surface of the nanoparticles to make them more compatible with the coating resin systems, so that easy dispersion, low viscosity, and covalent bonding are provided between the particles and the resins.

Fractal Concepts in Surface Growth

Author : A.- L. Barabási
Publisher : Cambridge University Press
ISBN 13 : 9780521483186
Total Pages : 392 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Fractal Concepts in Surface Growth by : A.- L. Barabási

Download or read book Fractal Concepts in Surface Growth written by A.- L. Barabási and published by Cambridge University Press. This book was released on 1995-04-13 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together two of the most exciting and widely studied subjects in modern physics: namely fractals and surfaces. To the community interested in the study of surfaces and interfaces, it brings the concept of fractals. To the community interested in the exciting field of fractals and their application, it demonstrates how these concepts may be used in the study of surfaces. The authors cover, in simple terms, the various methods and theories developed over the past ten years to study surface growth. They describe how one can use fractal concepts successfully to describe and predict the morphology resulting from various growth processes. Consequently, this book will appeal to physicists working in condensed matter physics and statistical mechanics, with an interest in fractals and their application. The first chapter of this important new text is available on the Cambridge Worldwide Web server: http://www.cup.cam.ac.uk/onlinepubs/Textbooks/textbookstop.html

Sputtering by Particle Bombardment

Author : Rainer Behrisch
Publisher : Springer Science & Business Media
ISBN 13 : 3540445021
Total Pages : 527 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Sputtering by Particle Bombardment by : Rainer Behrisch

Download or read book Sputtering by Particle Bombardment written by Rainer Behrisch and published by Springer Science & Business Media. This book was released on 2007-07-26 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a long-needed survey of new results. Especially welcome is a new summary of the measured and calculated sputtering yields with an algebraic approximation formula for the energy and angular dependence of the yields, which is useful for researchers who need sputtering yields for physics research or applied problems. The book offers a critical review of computational methods for calculating sputtering yields and also includes molecular dynamics calculations.

Flux Bounded Tungsten Inert Gas Welding Process

Author : P Chakravarthy
Publisher : CRC Press
ISBN 13 : 1000763927
Total Pages : 121 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Flux Bounded Tungsten Inert Gas Welding Process by : P Chakravarthy

Download or read book Flux Bounded Tungsten Inert Gas Welding Process written by P Chakravarthy and published by CRC Press. This book was released on 2019-12-10 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This focus book is intended to introduce the Flux Bounded Tungsten Inert Gas Welding (FBTIG) process, which is a variant of Activated Tungsten inert gas welding process. The benefits of activating flux in the weld pool in enhancing the depth of penetration and underlying mechanisms for the same is explained in detail. The benefits of FBTIG process over other fusion welding process are highlighted. The scope for the FBTIG process to be adapted at the industrial level and the advancements in this field is detailed that enables the practicing engineers to exploit the same. Covers activated TIG process, role of activating fluxes in enhancing the depth of penetration Illustrates mechanisms associated with FBTIG process including arc constriction effect, insulation effect and reverse marangoni flow Discusses scope of FBTIG process for commercialization at the industry level Gives general overview of chronological advancements in the field of welding This book is aimed at graduate students, researchers and professionals in welding, manufacturing and engineering.

Surface Modification to Improve Properties of Materials

Author : Miran Mozetič
Publisher : MDPI
ISBN 13 : 3038977969
Total Pages : 356 pages
Book Rating : 4.0/5 (389 download)

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Book Synopsis Surface Modification to Improve Properties of Materials by : Miran Mozetič

Download or read book Surface Modification to Improve Properties of Materials written by Miran Mozetič and published by MDPI. This book was released on 2019-04-16 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected contributions on surface modification to improve the properties of solid materials. The surface properties are tailored either by functionalization, etching, or deposition of a thin coating. Functionalization is achieved by a brief treatment with non-equilibrium gaseous plasma containing suitable radicals that interact chemically with the material surface and thus enable the formation of rather stable functional groups. Etching is performed in order to modify the surface morphology. The etching parameters are selected in such a way that a rich morphology of the surfaces is achieved spontaneously on the sub-micrometer scale, without using masks. The combination of adequate surface morphology and functionalization of materials leads to superior surface properties which are particularly beneficial for the desired response upon incubation with biological matter. Alternatively, the materials are coated with a suitable thin film that is useful in various applications from food to aerospace industries.

Plasma Applications for Material Modification

Author : Francisco L. Tabarés
Publisher : CRC Press
ISBN 13 : 1000245217
Total Pages : 322 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Plasma Applications for Material Modification by : Francisco L. Tabarés

Download or read book Plasma Applications for Material Modification written by Francisco L. Tabarés and published by CRC Press. This book was released on 2021-09-24 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date review of the most important plasma-based techniques for material modification, from microelectronics to biological materials and from fusion plasmas to atmospheric ones. Each its technical chapters is written by long-experienced, internationally recognised researchers. The book provides a deep and comprehensive insight into plasma technology and its associated elemental processes and is illustrated throughout with excellent figures and references to complement each section. Although some of the topics covered can be traced back several decades, care has been taken to emphasize the most recent findings and expected evolution. The first time the word ‘plasma’ appeared in print in a scientific text related to the study of electrical discharges in gases was 1928, when Irving Langmuir published his article ‘Oscillations in Ionized Gases’. It was the baptism of the predominant state of matter in the known universe (it is estimated that up to 99% of matter is plasma), although not on earth, where the conditions of pressure and temperature make normal the states of matter (solid, liquid, gas) which, in global terms, are exotic. It is enough to add energy to a solid (in the form of heat or electromagnetic radiation) to go into the liquid state, from which gas is obtained through an additional supply of energy. If we continue adding energy to the gas, we will partially or totally ionise it and reach a new state of matter, plasma, made up of free electrons, atoms and molecules (electrically neutral particles) and ions (endowed with a positive or a negative electric charge).

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Plasma Surface Interactions in Controlled Fusion Devices

Author :
Publisher :
ISBN 13 :
Total Pages : 658 pages
Book Rating : 4.:/5 (413 download)

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Book Synopsis Plasma Surface Interactions in Controlled Fusion Devices by :

Download or read book Plasma Surface Interactions in Controlled Fusion Devices written by and published by . This book was released on 1978 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Techniques for Surface Engineering

Author : W. Gissler
Publisher : Springer Science & Business Media
ISBN 13 : 9780792320067
Total Pages : 416 pages
Book Rating : 4.3/5 (2 download)

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Book Synopsis Advanced Techniques for Surface Engineering by : W. Gissler

Download or read book Advanced Techniques for Surface Engineering written by W. Gissler and published by Springer Science & Business Media. This book was released on 1992-10-31 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hardest requirements on a material are in general imposed at the surface: it has to be wear resistant for tools and bearings; corrosion resistant for turbine blades; antireflecting for solar cells; and it must combine several of these properties in other applications. `Surface engineering' is the general term that incorporates all the techniques by which a surface modification can be accomplished. These techniques include both the more traditional methods, such as nitriding, boriding and carburizing, and the newer ones, such as ion implantation, laser beam melting and, in particular, coating. This book comprises and compares in a unique way all these techniques of surface engineering. It is a compilation of lectures which were held by renowned scientists and engineers in the frame of the well known `EuroCourses' of the Joint Research Centre of the Commission of the European Communities. The book is principally addressed to material and surface scientists, physicists and chemists, engineers and technicians of industries and institutes where surface engineering problems arise.

Nuclear Science Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 1216 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ceramic Matrix Composites

Author : Composite Materials Handbook – 17 (CMH-17)
Publisher : SAE International
ISBN 13 : 0768084369
Total Pages : 491 pages
Book Rating : 4.7/5 (68 download)

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Book Synopsis Ceramic Matrix Composites by : Composite Materials Handbook – 17 (CMH-17)

Download or read book Ceramic Matrix Composites written by Composite Materials Handbook – 17 (CMH-17) and published by SAE International. This book was released on 2017-06-29 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fifth volume of this six-volume compendium publishes technical guidance and properties on ceramic matrix composite material systems. The selected guidance on technical topics related to this class of composites includes material selection, processing, characterization, testing, data reduction, design, analysis, quality control, application, case histories, and lessons learned of typical ceramic matrix composite materials. Volume 5, which covers ceramic matrix composites, supersedes MIL-HDBK-17-5 of June 17, 2002. The Composite Materials Handbook, referred to by industry groups as CMH-17, is an engineering reference tool that contains over 1,000 records of the latest test data for polymer matrix, metal matrix, ceramic matrix, and structural sandwich composites. CMH-17 provides information and guidance necessary to design and fabricate end items from composite materials. It includes properties of composite materials that meet specific data requirements as well as guidelines for design, analysis, material selection, manufacturing, quality control, and repair. The primary purpose of the handbook is to standardize engineering methodologies related to testing, data reduction, and reporting of property data for current and emerging composite materials. It is used by engineers worldwide in designing and fabricating products made from composite materials.

Iter Physics

Author : C Wendell Horton, Jr
Publisher : World Scientific
ISBN 13 : 9814678686
Total Pages : 248 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis Iter Physics by : C Wendell Horton, Jr

Download or read book Iter Physics written by C Wendell Horton, Jr and published by World Scientific. This book was released on 2015-06-25 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The promise of a vast and clean source of thermal power drove physics research for over fifty years and has finally come to collimation with the international consortium led by the European Union and Japan, with an agreement from seven countries to build a definitive test of fusion power in ITER. It happened because scientists since the Manhattan project have envisioned controlled nuclear fusion in obtaining energy with no carbon dioxide emissions and no toxic nuclear waste products.This large toroidal magnetic confinement ITER machine is described from confinement process to advanced physics of plasma-wall interactions, where pulses erupt from core plasma blistering the machine walls. Emissions from the walls reduce the core temperature which must remain ten times hotter than the 15 million degree core solar temperature to maintain ITER fusion power. The huge temperature gradient from core to wall that drives intense plasma turbulence is described in detail.Also explained are the methods designed to limit the growth of small magnetic islands, the growth of edge localized plasma plumes and the solid state physics limits of the stainless steel walls of the confinement vessel from the burning plasma. Designs of the wall coatings and the special 'exhaust pipe' for spent hot plasma are provided in two chapters. And the issues associated with high-energy neutrons — about 10 times higher than in fission reactions — and how they are managed in ITER, are detailed.

Advances in Energy and Environmental Materials

Author : Yafang Han
Publisher : Springer
ISBN 13 : 9811301581
Total Pages : 939 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Advances in Energy and Environmental Materials by : Yafang Han

Download or read book Advances in Energy and Environmental Materials written by Yafang Han and published by Springer. This book was released on 2018-04-17 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume gathers selected papers presented at the Chinese Materials Conference 2017 (CMC2017), held in Yinchuan City, Ningxia, China, on July 06-12, 2017. This book covers a wide range of energy conversion and storage materials, thermoelectric materials and devices, nuclear materials, solar energy materials and solar cells, minerals and oil and gas materials, photocatalytic materials for energy production, eco-materials, and environmental engineering materials. The Chinese Materials Conference (CMC) is the most important serial conference of the Chinese Materials Research Society (C-MRS) and has been held each year since the early 1990s. The 2017 installment included 37 Symposia covering four fields: Advances in energy and environmental materials; High performance structural materials; Fundamental research on materials; and Advanced functional materials. More than 5500 participants attended the congress, and the organizers received more than 700 technical papers. Based on the recommendations of symposium organizers and after peer reviewing, 490 papers have been included in the present proceedings, which showcase the latest original research results in the field of materials, achieved by more than 300 research groups at various universities and research institutes.

Fundamentals of Electric Propulsion

Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 0470436263
Total Pages : 528 pages
Book Rating : 4.4/5 (74 download)

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Book Synopsis Fundamentals of Electric Propulsion by : Dan M. Goebel

Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2008-12-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.