Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites
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Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-08-20
Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-20 with categories.
Thermal barrier and environmental barrier coatings (TBCs and EBCs) will play a crucial role in future advanced gas turbine engines because of their ability to significantly extend the temperature capability of the ceramic matrix composite (CMC) engine components in harsh combustion environments. In order to develop high performance, robust coating systems for effective thermal and environmental protection of the engine components, appropriate test approaches for evaluating the critical coating properties must be established. In this paper, a laser high-heat-flux, thermal gradient approach for testing the coatings will be described. Thermal cyclic behavior of plasma-sprayed coating systems, consisting of ZrO2-8wt%Y2O3 thermal barrier and NASA Enabling Propulsion Materials (EPM) Program developed mullite+BSAS/Si type environmental barrier coatings on SiC/SiC ceramic matrix composites, was investigated under thermal gradients using the laser heat-flux rig in conjunction with the furnace thermal cyclic tests in water-vapor environments. The coating sintering and interface damage were assessed by monitoring the real-time thermal conductivity changes during the laser heat-flux tests and by examining the microstructural changes after the tests. The coating failure mechanisms are discussed based on the cyclic test results and are correlated to the sintering, creep, and thermal stress behavior under simulated engine temperature and heat flux conditions. Zhu, Dongming and Lee, Kang N. and Miller, Robert A. Glenn Research Center NASA/TM-2002-211593, NAS 1.15:211593, E-13377, GT-2002-30632
Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-09-27
Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-27 with categories.
Thermal barrier and environmental barrier coatings (TBCs and EBCs) will play a crucial role in future advanced gas turbine engines because of their ability to significantly extend the temperature capability of the ceramic matrix composite (CMC) engine components in harsh combustion environments. In order to develop high performance, robust coating systems for effective thermal and environmental protection of the engine components, appropriate test approaches for evaluating the critical coating properties must be established. In this paper, a laser high-heat-flux, thermal gradient approach for testing the coatings will be described. Thermal cyclic behavior of plasma-sprayed coating systems, consisting of ZrO2-8wt%Y2O3 thermal barrier and NASA Enabling Propulsion Materials (EPM) Program developed mullite+BSAS/Si type environmental barrier coatings on SiC/SiC ceramic matrix composites, was investigated under thermal gradients using the laser heat-flux rig in conjunction with the furnace thermal cyclic tests in water-vapor environments. The coating sintering and interface damage were assessed by monitoring the real-time thermal conductivity changes during the laser heat-flux tests and by examining the microstructural changes after the tests. The coating failure mechanisms are discussed based on the cyclic test results and are correlated to the sintering, creep, and thermal stress behavior under simulated engine temperature and heat flux conditions. Zhu, Dongming and Lee, Kang N. and Miller, Robert A. Glenn Research Center NASA/TM-2002-211593, NAS 1.15:211593, E-13377, GT-2002-30632...
Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites
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Author :
language : en
Publisher:
Release Date : 2002
Thermal Gradient Cyclic Behavior Of A Thermal Environmental Barrier Coating System On Sic Sic Ceramic Matrix Composites written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Thermal Conductivity And Thermal Gradient Cyclic Behavior Of Refractory Silicate Coatings On Sic Sic Ceramic Matrix Composites
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Author :
language : en
Publisher:
Release Date : 2001
Thermal Conductivity And Thermal Gradient Cyclic Behavior Of Refractory Silicate Coatings On Sic Sic Ceramic Matrix Composites written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Surface Cracking And Interface Reaction Associated Delamination Failure Of Thermal And Environmental Barrier Coatings
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Author :
language : en
Publisher:
Release Date : 2003
Surface Cracking And Interface Reaction Associated Delamination Failure Of Thermal And Environmental Barrier Coatings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
In this paper, surface cracking and interface reactions of a BSAS coating and a multi-layer ZrO2-8wt%Y2O3 and mullite/BSAS/Si thermal and environmental barrier coating system on SiC/SiC ceramic matrix composites were characterized after long-term combined laser thermal gradient and furnace cyclic tests in a water vapor containing environment. The surface cracking was analyzed based on the coating thermal gradient sintering behavior and thermal expansion mismatch stress characteristics under the thermal cyclic conditions. The interface reactions, which were largely enhanced by the coating surface cracking in the water vapor environment, were investigated in detail, and the reaction phases were identified for the coating system after the long-term exposure. The accelerated coating delamination failure was attributed to the increased delamination driving force under the thermal gradient cyclic loading and the reduced interface adhesion due to the detrimental interface reactions.
Ceramic Matrix Composites
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Author : Narottam P. Bansal
language : en
Publisher: John Wiley & Sons
Release Date : 2014-11-24
Ceramic Matrix Composites written by Narottam P. Bansal and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-24 with Technology & Engineering categories.
This book is a comprehensive source of information on various aspects of ceramic matrix composites (CMC). It covers ceramic and carbon fibers; the fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration and joining. Each chapter in the book is written by specialists and internationally renowned researchers in the field. This book will provide state-of-the-art information on different aspects of CMCs. The book will be directed to researchers working in industry, academia, and national laboratories with interest and professional competence on CMCs. The book will also be useful to senior year and graduate students pursuing degrees in ceramic science and engineering, materials science and engineering, aeronautical, mechanical, and civil or aerospace engineering. Presents recent advances, new approaches and discusses new issues in the field, such as foreign object damage, life predictions, multiscale modeling based on probabilistic approaches, etc. Caters to the increasing interest in the application of ceramic matrix composites (CMC) materials in areas as diverse as aerospace, transport, energy, nuclear, and environment. CMCs are considered ans enabling technology for advanced aeropropulsion, space propulsion, space power, aerospace vehicles, space structures, as well as nuclear and chemical industries. Offers detailed descriptions of ceramic and carbon fibers; fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration/joining.
27th Annual Cocoa Beach Conference On Advanced Ceramics And Composites A Volume 24 Issue 3
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Author : Waltraud M. Kriven
language : en
Publisher: John Wiley & Sons
Release Date : 2009-09-28
27th Annual Cocoa Beach Conference On Advanced Ceramics And Composites A Volume 24 Issue 3 written by Waltraud M. Kriven and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-28 with Technology & Engineering categories.
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Developments In Strategic Ceramic Materials
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Author : Waltraud M. Kriven
language : en
Publisher: John Wiley & Sons
Release Date : 2016-01-05
Developments In Strategic Ceramic Materials written by Waltraud M. Kriven and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-05 with Technology & Engineering categories.
The Ceramic Engineering and Science Proceeding has been published by The American Ceramic Society since 1980. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Cyclic Failure Mechanisms Of Thermal And Environmental Barrier Coating Systems Under Thermal Gradient Test Conditions
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Author :
language : en
Publisher:
Release Date : 2002
Cyclic Failure Mechanisms Of Thermal And Environmental Barrier Coating Systems Under Thermal Gradient Test Conditions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Creep Behavior Of Hafnia And Ytterbium Silicate Environmental Barrier Coating Systems On Sic Sic Ceramic Matrix Composites
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Author : Dongming Zhu
language : en
Publisher: BiblioGov
Release Date : 2013-06
Creep Behavior Of Hafnia And Ytterbium Silicate Environmental Barrier Coating Systems On Sic Sic Ceramic Matrix Composites written by Dongming Zhu and has been published by BiblioGov this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06 with categories.
Environmental barrier coatings will play a crucial role in future advanced gas turbine engines because of their ability to significantly extend the temperature capability and stability of SiC/SiC ceramic matrix composite (CMC) engine components, thus improving the engine performance. In order to develop high performance, robust coating systems for engine components, appropriate test approaches simulating operating temperature gradient and stress environments for evaluating the critical coating properties must be established. In this paper, thermal gradient mechanical testing approaches for evaluating creep and fatigue behavior of environmental barrier coated SiC/SiC CMC systems will be described. The creep and fatigue behavior of Hafnia and ytterbium silicate environmental barrier coatings on SiC/SiC CMC systems will be reported in simulated environmental exposure conditions. The coating failure mechanisms will also be discussed under the heat flux and stress conditions.