January 16, 2021

Download Ebook Free Thermal Barrier Coatings

Thermal Barrier Coatings

Thermal Barrier Coatings
Author : Huibin Xu,Hongbo Guo
Publisher : Elsevier
Release Date : 2011-01-14
Category : Science
Total pages :360
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Effective coatings are essential to counteract the effects of corrosion and degradation of exposed materials in high-temperature environments such as gas turbine engines. Thermal barrier coatings reviews the latest advances in processing and performance of thermal barrier coatings, as well as their failure mechanisms. Part one reviews the materials and structures of thermal barrier coatings. Chapters cover both metallic and ceramic coating materials as well as nanostructured coatings. Part two covers established and advanced processing and spraying techniques, with chapters on the latest advances in plasma spraying and plasma vapour deposition as well as detonation gun spraying. Part three discusses the performance and failure of thermal barrier coatings, including oxidation and hot-corrosion, non-destructive evaluation and new materials, technologies and processes. With its distinguished editors and international team of contributors, Thermal barrier coatings is an essential reference for professional engineers in such industries as energy production, aerospace and chemical engineering as well as academic researchers in materials. Reviews the latest advances in processing and performance of thermal barrier coatings, as well as their failure mechanisms Explores the materials and structures of thermal barrier coatings incorporating cover both metallic and ceramic coating materials as well as nanostructured coating Assesses established and advanced processing and spraying techniques, including plasma vapour deposition and detonation gun spraying

Design of Thermal Barrier Coatings

Design of Thermal Barrier Coatings
Author : Mohit Gupta
Publisher : Springer
Release Date : 2015-05-05
Category : Technology & Engineering
Total pages :82
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This book details the relationships between microstructure, interface roughness, and properties of thermal barrier coatings. The author proposes a method for the reduction of the thermal conductivity of the ceramic layer in order to increase the lifetime of thermal barrier coatings. He includes models for the optimization of ceramic layer microstructure and interface roughness.

Advanced Ceramic Processing

Advanced Ceramic Processing
Author : A.M.A Mohamed
Publisher : BoD – Books on Demand
Release Date : 2015-11-11
Category : Technology & Engineering
Total pages :160
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Ceramic oxides typically have a combination of properties that make them attractive for many applications compared with other materials. This book attempts to compile, unify, and present a recent development for the production techniques, such as electrochemical, foaming, and microwave sintering, of rare earth ceramic oxide materials. This book presents leading-edge research in this field from around the world. Although there is no formal partition of the book, the chapters cover several preparation methods for ceramic oxides, especially for coating and electrical applications. In addition, a fabrication foaming technique for porous ceramics with tailored microstructure along with distinctive properties is provided. The information provided in this book is very useful for a board of scientists and engineers from both academia and industry.

Thermal Barrier Coatings for Advanced Gas Turbine and Diesel Engines

Thermal Barrier Coatings for Advanced Gas Turbine and Diesel Engines
Author : National Aeronautics and Space Adm Nasa
Publisher : Unknown
Release Date : 2018-09-25
Category :
Total pages :32
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Ceramic thermal barrier coatings (TBCS) have been developed for advanced gas turbine and diesel engine applications to improve engine reliability and fuel efficiency. However, durability issues of these thermal barrier coatings under high temperature cyclic conditions are still of major concern. The coating failure depends not only on the coating, but also on the ceramic sintering/creep and bond coat oxidation under the operating conditions. Novel test approaches have been established to obtain critical thermomechanical and thermophysical properties of the coating systems under near-realistic transient and steady state temperature and stress gradients encountered in advanced engine systems. This paper presents detailed experimental and modeling results describing processes occurring in the ZrO2-Y2O3 thermal barrier coating systems, thus providing a framework for developing strategies to manage ceramic coating architecture, microstructure and properties. Zhu, Dongming and Miller, Robert A. Glenn Research Center NASA/TM-1999-209453, NAS 1.15:209453, E-11948

ADVANCED THERMAL BARRIER COATINGS FOR OPERATION IN HIGH HYDROGEN CONTENT FUELED GAS TURBINES.

ADVANCED THERMAL BARRIER COATINGS FOR OPERATION IN HIGH HYDROGEN CONTENT FUELED GAS TURBINES.
Author : Anonim
Publisher : Unknown
Release Date : 2014
Category :
Total pages :129
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The Center for Thermal Spray Research (CTSR) at Stony Brook University in partnership with its industrial Consortium for Thermal Spray Technology is investigating science and technology related to advanced metallic alloy bond coats and ceramic thermal barrier coatings for applications in the hot section of gasified coal-based high hydrogen turbine power systems. In conjunction with our OEM partners (GE and Siemens) and through strategic partnership with Oak Ridge National Laboratory (ORNL) (materials degradation group and high temperature materials laboratory), a systems approach, considering all components of the TBC (multilayer ceramic top coat, metallic bond coat & superalloy substrate) is being taken during multi-layered coating design, process development and subsequent environmental testing. Recent advances in process science and advanced in situ thermal spray coating property measurement enabled within CTSR has been incorporated for full-field enhancement of coating and process reliability. The development of bond coat processing during this program explored various aspects of processing and microstructure and linked them to performance. The determination of the bond coat material was carried out during the initial stages of the program. Based on tests conducted both at Stony Brook University as well as those carried out at ORNL it was determined that the NiCoCrAlYHfSi (Amdry) bond coats had considerable benefits over NiCoCrAlY bond coats. Since the studies were also conducted at different cycling frequencies, thereby addressing an associated need for performance under different loading conditions, the Amdry bond coat was selected as the material of choice going forward in the program. With initial investigations focused on the fabrication of HVOF bond coats and the performance of TBC under furnace cycle tests, several processing strategies were developed. Two-layered HVOF bond coats were developed to render optimal balance of density and surface roughness and resulted in improved TBC lifetimes. Processing based approaches of identifying optimal processing regimes deploying advanced in-situ coating property measurements and in-flight diagnostic tools were used to develop process maps for bond coats. Having established a framework for the bond coat processing using the HVOF process, effort were channeled towards fabrication of APS and VPS bond coats with the same material composition. Comparative evaluation of the three deposition processes with regard to their microstrcuture, surface profiles and TBC performance were carried out and provided valuable insights into factors that require concurrent consideration for the development of bond coats for advanced TBC systems. Over the course of this program several advancements were made on the development of durable thermal barrier coatings. Process optimization techniques were utilized to identify processing regimes for both conventional YSZ as well as other TBC compositions such as Gadolinium Zirconate and other Co-doped materials. Measurement of critical properties for these formed the initial stages of the program to identify potential challenges in their implementation as part of a TBC system. High temperature thermal conductivity measurements as well as sintering behavior of both YSZ and GDZ coatings were evaluated as part of initial efforts to undersand the influence of processing on coating properties. By effectively linking fundamental coating properties of fracture toughness and elastic modulus to the cyclic performance of 6 DE-FE0004771, Final Report, April 2015: Stony Brook University coatings, a durability strategy for APS YSZ coatings was developed. In order to meet the goals of fabricating a multimaterial TBC system further research was carried out on the development of a gradient thermal conductivity model and the evaluation of sintering behavior of multimaterial coatings. Layer optimization for desired properties in the multimaterial TBC was achieved by a ...

Loadings in Thermal Barrier Coatings of Jet Engine Turbine Blades

Loadings in Thermal Barrier Coatings of Jet Engine Turbine Blades
Author : Tomasz Sadowski,Przemysław Golewski
Publisher : Springer
Release Date : 2016-04-15
Category : Technology & Engineering
Total pages :107
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This book discusses complex loadings of turbine blades and protective layer Thermal Barrier Coating (TBC), under real working airplane jet conditions. They obey both multi-axial mechanical loading and sudden temperature variation during starting and landing of the airplanes. In particular, two types of blades are analyzed: stationary and rotating, which are widely applied in turbine engines produced by airplane factories.

Thermal Barrier Coating Workshop

Thermal Barrier Coating Workshop
Author : Anonim
Publisher : Unknown
Release Date : 1995
Category :
Total pages :289
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Progress in Thermal Barrier Coatings

Progress in Thermal Barrier Coatings
Author : ACerS (American Ceramics Society, The)
Publisher : John Wiley & Sons
Release Date : 2009-07-15
Category : Technology & Engineering
Total pages :628
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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.

Life Modeling of Thermal Barrier Coatings for Aircraft Gas Turbine Engines

Life Modeling of Thermal Barrier Coatings for Aircraft Gas Turbine Engines
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Release Date : 2018-12-29
Category : Science
Total pages :28
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Thermal barrier coating life models developed under the NASA Lewis Research Center's Hot Section Technology (HOST) program are summarized. An initial laboratory model and three design-capable models are discussed. Current understanding of coating failure mechanisms are also summarized. Miller, Robert A. Glenn Research Center NASA-TM-100283, E-3921, NAS 1.15:100283 RTOP 505-63-12...

Geometric Effects of Thermal Barrier Coating Damage on Turbine Blade Temperatures

Geometric Effects of Thermal Barrier Coating Damage on Turbine Blade Temperatures
Author : Shane Colon
Publisher : Unknown
Release Date : 2019
Category : Aircraft gas-turbines
Total pages :86
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Thermal barrier coatings (TBC) found on turbine blades are a key element in the performance and reliability of modern gas turbines. During the life of the turbine components, the TBC surface may be damaged due to manufacturing imperfections, handling damage, service spalling, or service impact damage, producing chips in the coating. While a chip in the TBC coating is expected to cause an increase in airfoil temperature, it is unknown to what degree the blade will be affected and what parameters of the chip shape affect this result. The foal of this preliminary study is to identify the major driving parameters that lead to the increase in metal temperature when TBC is damaged, such that more quantitative estimates of blade life and refurbished needs can be made. A 2-D computational Conjugate Heat Transfer model was developed; fully resolving the hot has path and TBC, bond-coat, and super alloy solids. The most sensitive driving parameters were identified to be the chip width and Mach number. In cases where the chip width reached 16 times the TBC thickness, temperatures increased by almost 30% when compared to the undamaged equivalents. While the Reynolds number based on the distance from the blading chip edge was deemed negligible, the Reynolds number based on the chip width was found to have a noticeable impact on the blade temperature. In conclusion, this study found that chip edge geometry was a negligible factor, while the Mach number, chip width, and Reynolds number based on the chip width had a significant effect on the total metal temperature.

Thermal Barrier Coating Life Prediction Model Development

Thermal Barrier Coating Life Prediction Model Development
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Release Date : 2018-11-18
Category : Science
Total pages :160
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This report describes work performed to determine the predominat modes of degradation of a plasma sprayed thermal barrier coating system and to develop and verify life prediction models accounting for these degradation modes. The primary TBC system consisted of a low pressure plasma sprayed NiCrAlY bond coat, an air plasma sprayed ZrO2-Y2O3 top coat, and a Rene' 80 substrate. The work was divided into 3 technical tasks. The primary failure mode to be addressed was loss of the zirconia layer through spalling. Experiments showed that oxidation of the bond coat is a significant contributor to coating failure. It was evident from the test results that the species of oxide scale initially formed on the bond coat plays a role in coating degradation and failure. It was also shown that elevated temperature creep of the bond coat plays a role in coating failure. An empirical model was developed for predicting the test life of specimens with selected coating, specimen, and test condition variations. In the second task, a coating life prediction model was developed based on the data from Task 1 experiments, results from thermomechanical experiments performed as part of Task 2, and finite element analyses of the TBC system during thermal cycles. The third and final task attempted to verify the validity of the model developed in Task 2. This was done by using the model to predict the test lives of several coating variations and specimen geometries, then comparing these predicted lives to experimentally determined test lives. It was found that the model correctly predicts trends, but that additional refinement is needed to accurately predict coating life. Hillery, R. V. and Pilsner, B. H. and Mcknight, R. L. and Cook, T. S. and Hartle, M. S. LIFE (DURABILITY); PREDICTIONS; THERMAL CONTROL COATINGS; ALUMINUM; CHROMIUM; DEGRADATION; FAILURE MODES; NICKEL; PLASMA SPRAYING; SUBSTRATES; YTTRIUM; ZIRCONIUM...

Progress in Gas Turbine Performance

Progress in Gas Turbine Performance
Author : Ernesto Benini
Publisher : BoD – Books on Demand
Release Date : 2013-06-19
Category : Technology & Engineering
Total pages :270
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There has been a remarkable difference in the research and development regarding gas turbine technology for transportation and power generation. The former remains substantially florid and unaltered with respect to the past as the superiority of air-breathing engines compared to other technologies is by far immense. On the other hand, the world of gas turbines (GTs) for power generation is indeed characterized by completely different scenarios in so far as new challenges are coming up in the latest energy trends, where both a reduction in the use of carbon-based fuels and the raising up of renewables are becoming more and more important factors. While being considered a key technology for base-load operations for many years, modern stationary gas turbines are in fact facing the challenge to balance electricity from variable renewables with that from flexible conventional power plants. The book intends in fact to provide an updated picture as well as a perspective view of some of the abovementioned issues that characterize GT technology in the two different applications: aircraft propulsion and stationary power generation. Therefore, the target audience for it involves design, analyst, materials and maintenance engineers. Also manufacturers, researchers and scientists will benefit from the timely and accurate information provided in this volume. The book is organized into three main sections including 10 chapters overall: (i) Gas Turbine and Component Performance, (ii) Gas Turbine Combustion and (iii) Fault Detection in Systems and Materials.

Hafnia-based Nanostructured Thermal Barrier Coatings for Next Generation Gas Turbine Technology

Hafnia-based Nanostructured Thermal Barrier Coatings for Next Generation Gas Turbine Technology
Author : Mohammed Noor-A-Alam
Publisher : Unknown
Release Date : 2012
Category : Gas-turbine power-plants
Total pages :129
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Production, Properties, and Applications of High Temperature Coatings

Production, Properties, and Applications of High Temperature Coatings
Author : Pakseresht, Amir Hossein
Publisher : IGI Global
Release Date : 2018-01-12
Category : Technology & Engineering
Total pages :557
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Heat resistant layers are meant to withstand high temperatures while also protecting against all types of corrosion and oxidation. Therefore, the micro-structure and behavior of such layers is essential in understanding the functionality of these materials in order to make improvements. Production, Properties, and Applications of High Temperature Coatings is a critical academic publication which examines the methods of creation, characteristics, and behavior of materials used in heat resistant layers. Featuring coverage on a wide range of topics such as, thermal spray methods, sol-gel coatings, and surface nanoengineering, this book is geared toward students, academicians, engineers, and researchers seeking relevant research on the methodology and materials for producing effective heat resistant layers.

Thermal Barrier Coatings

Thermal Barrier Coatings
Author : A. G. Harding
Publisher : Unknown
Release Date : 1965
Category :
Total pages :420
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