Download or read book High Temperature Sensing of Thermal Barrier Materials by Luminescence written by Molly Maureen Gentleman and published by ProQuest. This book was released on 2006 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basis for a number of concepts for in situ monitoring of thermal barrier coating heath and temperature using non-contact luminescence techniques is described. Restrictions imposed by phase compatibility and the optical properties of the coating materials are discussed as guidelines for the selection of rare-earth ions as chromophore dopants in these sensors. Extensive studies of type and concentration of rare-earth doping lead to the selection of Eu-doped materials as the preferred material for temperature sensing. Sensor layers, consisting of 1 atomic percent europia-doped yttria stabilized zirconia were deposited and exposed to high heat flux conditions similar to those seen today's turbine environments and were shown to be capable of measuring temperature at different depths within the coating.
Download or read book Embedded Optical Sensors for Thermal Barrier Coatings written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the second year of this program on developing embedded optical sensors for thermal barrier coatings, our research has focused three topics: (1) Eu{sup 3+} doping for temperature sensing, (2) the effect of long-term, high-temperature aging on the characteristics of the luminescence from the Eu{sup 3+} ions of 8YSZ materials, (3) construction of a fiber-optic based luminescence detector system. It has been demonstrated that the variation in luminescence lifetime with temperature is identical for electron-beam evaporated Eu-doped YSZ coatings as for bulk ceramics of the same composition. Experiments indicate that the luminescence lifetime method of measuring temperatures is sensitive up to 1150 C for both Eu-doped YSZ coatings and Eu-doped Gd2Zr2O--. Furthermore, the technique is sensitive up to 1250 C for the composition Eu2Zr2O--. The luminescence spectra Eu-doped YSZ are insensitive to long-term aging at high-temperatures, even to 195 hours at 1425 C, except for a small frequency shift that is probably too small in measure except with instruments of the highest spectral resolution. The temperature of 1425 C is much higher than present engines attain or even planned in the foreseeable future. Nevertheless, experiments are on-going to explore longer term exposures. A fiber-optic based luminescence system has been constructed in which the hottest section of fiber operates to at least 1250 C.
Download or read book Luminescence Thermometry written by Miroslav Dramićanin and published by Woodhead Publishing. This book was released on 2018-04-21 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Luminescence Thermometry: Methods, Materials, and Applications presents the state-of-the art applications of luminescence thermometry, giving a detailed explanation of luminescence spectroscopic schemes for the read-out of temperature, while also describing the diverse materials that are capable of sensing temperature via luminescence. Chapters cover the fundamentals of temperature, traditional thermometers and their figures of merit, a concise description of optical thermometry methods, luminescence and instrumentation, and an explanation of the ways in which increases in temperature quench luminescence. Additional sections focus on materials utilized for luminescence thermometry and the broad range of applications for luminescence thermometry, including temperature measurement at the nanoscale and the application of multifunctional luminescent materials. Provides an overview of luminescence thermometry applications, including high-temperature, biomedical, nanoscale and multifunctional Delves into luminescence thermometry by materials group, including Rare-earth and transition Metal Ion Doped, Semiconductors, Quantum Dots and Organic materials Gives a concise introduction of the latest methods of temperature measurement, including luminescence spectroscopic schemes and methods of analysis
Download or read book Luminescence of High Temperature Materials for Thermometry and Crystallographic Studies written by Matthew David Chambers and published by . This book was released on 2009 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of luminescence decay lifetimes to measure temperature is in many ways an ideal solution to the challenges presented to thermometry by aggressive high temperature environments with chemically or mechanically dynamic environments. Additionally, many such systems in which knowledge of temperature is desired already incorporate oxides as surface layers for tribological or environmental protection, or thermal insulation. These oxides can in many cases be made luminescent by appropriate rare-earth doping. This work examines the lifetime decay behavior of numerous doped oxides pertinent to thermal barrier and environmental barrier systems. Towards application in jet turbines, one of the chief fields of interest in this technique, the creation and demonstration of discrete sensor layers in or on top of zirconia coatings is presented. Implementation of luminescence lifetime thermometry in thermal barrier and environmental barrier systems is discussed specifically, and application to other systems is discussed in general. Materials are presented showing temperature sensitivity up to at least 1450oC. Approaches to analysis of decay traces and luminescence spectra are described that yield greater precision of lifetime values (and thus temperature) and deeper understanding of the crystal chemistry from which the luminescent properties are derived. This later point is particularly important for the commercial thermal barrier, yttria-stabilized zirconia, which possesses rich crystallographic properties and exhibits luminescent properties which are dependent on composition and thermal history as is discussed at the conclusion of this work.
Download or read book High Performance Ceramics V written by Wei Pan and published by Trans Tech Publications Ltd. This book was released on 2008-02-11 with total page 2000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). This special volume presents, discusses and reviews the latest advances in the science and technology of high-performance ceramics. The editors received more than 700 contributions from which, following a strict peer-review process, more than 598 manuscripts were chosen for inclusion in this collection.
Download or read book Progress in Thermal Barrier Coatings written by ACerS (American Ceramics Society, The) and published by John Wiley & Sons. This book was released on 2009-07-15 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition of the Progress in Ceramic Technology series compiles articles published on thermal barrier coatings (TBCs) by The American Ceramic Society (ACerS). It collects in one resource the current research papers on materials-related aspects of thermal barrier coatings and associated technologies. Logically organized and carefully selected, the papers in this edition divide into six categories: Applications Material Improvements and Novel Compositions Developments in Processing Mechanical Properties Thermal Properties Citations follow each title in the table of contents, making this a key resource for professionals and academia.
Download or read book Optical Diagnostics of Thermal Barrier Coatings written by Mark Steven Majewski and published by . This book was released on 2011 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Temperature Corrosion and Protection of Materials 6 written by Pierre Steinmetz and published by . This book was released on 2004 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Temperature Coatings written by Sudhangshu Bose and published by Butterworth-Heinemann. This book was released on 2017-11-27 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Temperature Coatings, Second Edition, demonstrates how to counteract the thermal effects of rapid corrosion and degradation of exposed materials and equipment that can occur under high operating temperatures. This is the first true practical guide on the use of thermally protective coatings for high-temperature applications, including the latest developments in materials used for protective coatings. It covers the make-up and behavior of such materials under thermal stress and the methods used for applying them to specific types of substrates, as well as invaluable advice on inspection and repair of existing thermal coatings. With his long experience in the aerospace gas turbine industry, the author has compiled the very latest in coating materials and coating technologies, as well as hard-to-find guidance on maintaining and repairing thermal coatings, including appropriate inspection protocols. The book is supplemented with the latest reference information and additional support to help readers find more application- and industry-type coatings specifications and uses. Offers an overview of the underlying fundamental concepts of thermally-protective coatings, including thermodynamics, energy kinetics, crystallography and equilibrium phases Covers essential chemistry and physics of underlying substrates, including steels, nickel-iron alloys, nickel-cobalt alloys and titanium alloys Provides detailed guidance on a wide variety of coating types, including those used against high temperature corrosion and oxidative degradation and thermal barrier coatings
Download or read book Annual Review of Materials Research written by and published by . This book was released on 2009 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EMBEDDED OPTICAL SENSORS FOR THERMAL BARRIER COATINGS written by David R. Clarke and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this first year of the program we have focused on the selection of rare-earth dopants for luminescent sensing in thermal barrier coating materials, the effect of dopant concentration on several of the luminescence characteristics and initial fabrication of one type of embedded sensor, the ''red-line'' sensor. We have initially focused on erbium as the lanthanide dopant for luminescence doping of yttria-stabilized zirconia and europium as the lanthanide for luminescence doping of gadolinium zirconate. The latter exhibits a temperature-dependent luminescence lifetime up to at least 1100 C.A buried layer, ''red-line'' sensor in an electron-beam deposited yttria-stabilized zirconia coating with erbium has been demonstrated and exhibits a temperature-dependent luminescence lifetime up to at least 400 C.
Download or read book Advanced Ceramic Coatings and Materials for Extreme Environments Volume 32 Issue 3 written by Dongming Zhu and published by John Wiley & Sons. This book was released on 2011-10-11 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers from The American Ceramic Society's 35th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 23-28, 2011. This issue includes papers presented in the Advanced Ceramic Coatings for Structural, Environmental, and Functional Applications and Materials for Extreme Environments symposia on topics such as Coatings to Resist Wear, Erosion and Tribological Loadings; Environmental Barrier Coatings; Functionally Graded Coatings and Interfaces; Thermal Barrier Coatings; and Ultrahigh Temperature Ceramics and Nanolaminated Ternary Carbides and Nitrides (MAX Phases).
Download or read book NASA Tech Briefs written by and published by . This book was released on 1988 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Luminescent Materials in Display and Biomedical Applications written by Vikas Dubey and published by CRC Press. This book was released on 2020-11-18 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Luminescent materials with advanced performance are in the research hot spot with the recent technical developments of the display, lighting, and fluorescence labeling. Rare-earth-doped luminescent materials have been the focus of the research community owing to their wide applications in display devices, temperature sensors, solar cells, biomedical fields, optoelectronics, etc. This book covers the broad aspects of organic and inorganic materials based phosphors. The purpose of this book is to provide an up-to-date account of the present status and advancement of various techniques of synthesis of luminescent materials and their advanced applications in different areas. This book will cover all the experimental and theoretical approaches related to the rare-earth-doped luminescent materials. It also contains all the necessary information about the rare-earth-doped luminescent materials that were used in the past few years. In a nutshell, this book provides a unique platform to the newcomers who are planning to do research on rare-earthdoped luminescent materials as well as the researchers who are well established in this field.
Download or read book Rare Earth Doping of Advanced Materials for Photonic Applications Volume 1111 written by V. Dierolf and published by . This book was released on 2009-09-09 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book Pressure and Temperature Sensitive Paints written by Tianshu Liu and published by Springer Nature. This book was released on 2021-07-31 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition describes pressure and temperature sensitive paints (PSP and TSP) in global surface pressure and temperature measurements in aerodynamics and fluid mechanics. The book includes the latest progress in paint formulations, instrumentation, and steady and unsteady aerodynamic measurements in various facilities including low-speed, transonic, supersonic and hypersonic wind tunnels. The updated technical aspects of PSP and TSP in the book will be useful for students and researchers in experimental aerodynamics and fluid mechanics.
Download or read book Publications of the National Bureau of Standards 1972 Catalog written by United States. National Bureau of Standards and published by . This book was released on 1973 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
