Cold Spray of Copper Onto Niobium for Conductive Cooling of Superconducting Radio Frequency Structures PDF Download
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Author: James Kedren Penney
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Book Description
Niobium is used in superconducting radio frequency (SRF) structures that operate at cryogenic temperatures. These structures are continually optimized to increase e ciency and provide cost e ective fabrication. Throughout optimization, material properties of thermal conductivity and mechanical strength are often jeopardized. Cold spraying has been of interest in coatings, repair, and additive manufacturing and poses a possible solution to optimization of SRF structures. This process involves deposition of a desired material onto a substrate through accelerating the material in the form of a powder to high velocities via pressurized gas. Currently, the combination of copper powder being deposited onto a niobium substrate via this process has never been studied. This is the rst known study of cold-sprayed copper coatings onto niobium for the application of conductive cooling of SRF accelerating structures. Trials were conducted to assess the compatibility of cold spray of copper with SRF structures through processing and operating conditions. The material campaign involved understanding parameters for sample fabrication, substrate preparation, material deposition, and post-processing that may provide optimal coatings. This study o ers a rm base understanding of the copper and niobium cold spray pair. E ective deposition of this pair requires mechanical interlocking as there is no metallurgical bonding of these materials at the processing temperatures. The extent of mechanical interlocking is a ected by substrate preparation and surface roughness, oxygen content of copper powder, particle velocity, gas temperature, powder morphology, and particle size distribution.
Author: James Kedren Penney
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Book Description
Niobium is used in superconducting radio frequency (SRF) structures that operate at cryogenic temperatures. These structures are continually optimized to increase e ciency and provide cost e ective fabrication. Throughout optimization, material properties of thermal conductivity and mechanical strength are often jeopardized. Cold spraying has been of interest in coatings, repair, and additive manufacturing and poses a possible solution to optimization of SRF structures. This process involves deposition of a desired material onto a substrate through accelerating the material in the form of a powder to high velocities via pressurized gas. Currently, the combination of copper powder being deposited onto a niobium substrate via this process has never been studied. This is the rst known study of cold-sprayed copper coatings onto niobium for the application of conductive cooling of SRF accelerating structures. Trials were conducted to assess the compatibility of cold spray of copper with SRF structures through processing and operating conditions. The material campaign involved understanding parameters for sample fabrication, substrate preparation, material deposition, and post-processing that may provide optimal coatings. This study o ers a rm base understanding of the copper and niobium cold spray pair. E ective deposition of this pair requires mechanical interlocking as there is no metallurgical bonding of these materials at the processing temperatures. The extent of mechanical interlocking is a ected by substrate preparation and surface roughness, oxygen content of copper powder, particle velocity, gas temperature, powder morphology, and particle size distribution.
Author: Yoseph Bar-Cohen
Publisher: CRC Press
ISBN: 149870039X
Category : Science
Languages : en
Pages : 518
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Book Description
This book addresses the growing interest in low temperature technologies. Since the subject of low temperature materials and mechanisms is multidisciplinary, the chapters reflect the broadest possible perspective of the field. Leading experts in the specific subject area address the various related science and engineering chemistry, material science, electrical engineering, mechanical engineering, metallurgy, and physics.
Author: Perrin Walker
Publisher: CRC Press
ISBN: 9781439822531
Category : Science
Languages : en
Pages : 1434
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Book Description
This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools.
Author: Paul Seidel
Publisher: John Wiley & Sons
ISBN: 3527412093
Category : Technology & Engineering
Languages : en
Pages : 1334
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Book Description
This wide-ranging presentation of applied superconductivity, from fundamentals and materials right up to the details of many applications, is an essential reference for physicists and engineers in academic research as well as in industry. Readers looking for a comprehensive overview on basic effects related to superconductivity and superconducting materials will expand their knowledge and understanding of both low and high Tc superconductors with respect to their application. Technology, preparation and characterization are covered for bulk, single crystals, thins fi lms as well as electronic devices, wires and tapes. The main benefit of this work lies in its broad coverage of significant applications in magnets, power engineering, electronics, sensors and quantum metrology. The reader will find information on superconducting magnets for diverse applications like particle physics, fusion research, medicine, and biomagnetism as well as materials processing. SQUIDs and their usage in medicine or geophysics are thoroughly covered, as are superconducting radiation and particle detectors, aspects on superconductor digital electronics, leading readers to quantum computing and new devices.
Author: Michael F. Ashby
Publisher: Butterworth-Heinemann
ISBN: 0080994350
Category : Technology & Engineering
Languages : en
Pages : 899
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Book Description
Materials, Third Edition, is the essential materials engineering text and resource for students developing skills and understanding of materials properties and selection for engineering applications. This new edition retains its design-led focus and strong emphasis on visual communication while expanding its inclusion of the underlying science of materials to fully meet the needs of instructors teaching an introductory course in materials. A design-led approach motivates and engages students in the study of materials science and engineering through real-life case studies and illustrative applications. Highly visual full color graphics facilitate understanding of materials concepts and properties. For instructors, a solutions manual, lecture slides, online image bank, and materials selection charts for use in class handouts or lecture presentations are available at http://textbooks.elsevier.com. The number of worked examples has been increased by 50% while the number of standard end-of-chapter exercises in the text has been doubled. Coverage of materials and the environment has been updated with a new section on Sustainability and Sustainable Technology. The text meets the curriculum needs of a wide variety of courses in the materials and design field, including introduction to materials science and engineering, engineering materials, materials selection and processing, and materials in design. Design-led approach motivates and engages students in the study of materials science and engineering through real-life case studies and illustrative applications Highly visual full color graphics facilitate understanding of materials concepts and properties Chapters on materials selection and design are integrated with chapters on materials fundamentals, enabling students to see how specific fundamentals can be important to the design process For instructors, a solutions manual, lecture slides, online image bank and materials selection charts for use in class handouts or lecture presentations are available at http://textbooks.elsevier.com Links with the Cambridge Engineering Selector (CES EduPack), the powerful materials selection software. See www.grantadesign.com for information NEW TO THIS EDITION: Text and figures have been revised and updated throughout The number of worked examples has been increased by 50% The number of standard end-of-chapter exercises in the text has been doubled Coverage of materials and the environment has been updated with a new section on Sustainability and Sustainable Technology
Author: Calvin G. Burnham
Publisher: World Scientific
ISBN: 9789971506100
Category : Science
Languages : en
Pages : 710
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Book Description
The development of high temperature superconductors is one of the major technological discoveries of this century. The impact and interactions from the scientific, technical, business and political aspects will be presented.
Author: Arthur A. Tracton
Publisher: CRC Press
ISBN: 1420027328
Category : Mathematics
Languages : en
Pages : 930
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Book Description
Serving as an all-in-one guide to the entire field of coatings technology, this encyclopedic reference covers a diverse range of topics-including basic concepts, coating types, materials, processes, testing and applications-summarizing both the latest developments and standard coatings methods. Take advantage of the insights and experience of over
Author: William Anthony Krivsky
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 0
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Book Description
Author: Lyndon R. Evans
Publisher: EPFL Press
ISBN: 9782940222346
Category : Hadron colliders
Languages : en
Pages : 264
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Book Description
Describes the technology and engineering of the Large Hadron collider (LHC), one of the greatest scientific marvels of this young 21st century. This book traces the feat of its construction, written by the head scientists involved, placed into the context of the scientific goals and principles.
Author: Thomas J. Dolan
Publisher: Springer Science & Business Media
ISBN: 1447155564
Category : Technology & Engineering
Languages : en
Pages : 816
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Book Description
Magnetic Fusion Technology describes the technologies that are required for successful development of nuclear fusion power plants using strong magnetic fields. These technologies include: • magnet systems, • plasma heating systems, • control systems, • energy conversion systems, • advanced materials development, • vacuum systems, • cryogenic systems, • plasma diagnostics, • safety systems, and • power plant design studies. Magnetic Fusion Technology will be useful to students and to specialists working in energy research.
