Download or read book State of the Art of Gadolinium Zirconate Based Thermal Barrier Coatings written by Gultekin Goller and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fast consumption of fossil fuel resources and economic competitiveness makes it necessary to increase the efficiency of turbine engines. For this purpose, thermal barrier coating (TBC) has been used on some critical parts of gas turbines. Yttria-stabilized zirconia (YSZ) is widely and commercially used as a ceramic top coat material for TBC in the gas turbine system. On the other hand, the efforts to identify new material having better properties than YSZ have been continued. Gadolinium zirconate (GZ) is a promising alternative TBC material with its lower thermal conductivity, better sintering ability, and higher melting point and phase stability than YSZ. However, recent research studies on the responses of GZ-based TBC materials to the complex demands of modern gas turbine applications should be gathered under a study by comparing them with the results of traditional TBC material. This chapter discusses the GZ based TBC system, specifically addressing issues related to the production process and designing of the coating architecture, in comparison with some of the significant properties with YSZ and the test methodology. Moreover, the chapter also contains information about laser surface modification of the GZ-based TBC.
Download or read book Gadolinium Zirconate as a New Material for Thermal Barrier Coatings written by Li Wang and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal barrier coatings (TBCs) have been widely used to protect the superalloy components from the hot gas stream in gas turbine engines. Driven by the higher inlet temperature of modern gas turbine engines for higher efficiency and less harmful gas emission, exploration of TBC new materials and thermal radiation effects of TBCs have recently attracted more attentions. This research explored the potential application of gadolinium zirconate as a promising new TBC material due to its lower thermal conductivity, higher phase stability, and higher CMAS-resistance than conventional YSZ material. The thermal cycling tests were performed using a novel test rig which was designed to mimic the complex working condition of TBCs, and the thermal radiation properties were characterized in the wavelength range where turbine engine thermal radiation is most concentrated. This book is suitable for both beginners and professions in the field of TBCs, as it covers both the brief introduction of TBC system, deposition methods, recent development and the in-depth analysis of failure mechanisms and different models to determine the coating absorption and scattering coefficients.
Download or read book Novel Lanthanum Zirconate based Thermal Barrier Coatings for Energy Applications written by Xingye Guo and published by Springer Nature. This book was released on 2020-11-09 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the latest developments of lanthanum zirconate based thermal barrier coatings. The physical, thermal, and mechanical properties of lanthanum zirconate powder and coatings are critically evaluated. Processing and characterizations of lanthanum zirconate powder and coatings under various conditions are also examined. Theoretical studies on the powder and coating’s properties are presented as well. Finally, future research directions of lanthanum zirconate as the next generation thermal barrier applications are proposed. Discusses fundamental mechanisms, processing, and applications of advanced coating materials; Addresses modeling methods of thermal barrier coatings focusing on surface and interface properties; A review suitable for industrial, academic and government researchers.
Download or read book Functional Performance of Gadolinium Zirconate Yttria Stabilized Zirconia Multi Layered Thermal Barrier Coatings written by Satyapal Mahade and published by . This book was released on 2018 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Coatings for High Temperature Environments written by Amirhossein Pakseresht and published by Springer Nature. This book was released on 2024-01-06 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the recent trends in thermal and environmental barrier coatings and their applications in extreme environments. It introduces the state of the art in coating materials and processes for high and ultrahigh-temperature environments and identifies areas for improvement in materials selection, performance upgrades, design considerations, and manufacturing methods. This book also covers fundamental studies involving modelling, creating coating architectures, coating preparation methods, and coating capability throughout a wide temperature range. The book examines a variety of high-temperature coatings prepared through various synthesis processes such as thermal spraying, electron beam evaporation, and sol–gel methods. This book also covers ultrahigh-temperature ceramic (UHTC) materials and provides a brief overview of the synthesis method, densification processes, and coating methods along with the properties and applications of emerging high entropy UHTCs. With contributions from international researchers active in the field, this edited book features the most recent and up-to-date literature references for a broad readership consisting of academic and industrial professionals. It is suitable for graduate students as well as materials scientists and engineers working in the area of high and ultrahigh-temperature ceramic materials.
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 Yttria Stabilized Zirconia Gadolinium Zirconate Double Layer Plasma Sprayed Thermal Barrier Coating Systems TBCs written by Emine Bakan and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Barrier Coatings written by Kang N. Lee and published by MDPI. This book was released on 2020-12-29 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global increase in air travel will require commercial vehicles to be more efficient than ever before. Advanced engine hot section materials are a key technology required to keep fuel consumption and emission to a minimum in next-generation gas turbines. Ceramic matrix composites (CMCs) are the most promising material to revolutionize gas turbine hot section materials technology because of their excellent high‐temperature properties. Rapid surface recession due to volatilization by water vapor is the Achilles heel of CMCs. Environmental barrier coatings (EBCs) is an enabling technology for CMCs, since it protects CMCs from water vapor. The first CMC component entered into service in 2016 in a commercial engine, and more CMC components are scheduled to follow within the next few years. One of the most difficult challenges to CMC components is EBC durability, because failure of EBC leads to a rapid reduction in CMC component life. Key contributors to EBC failure include recession, oxidation, degradation by calcium‐aluminum‐magnesium silicates (CMAS) deposits, thermal and thermo‐mechanical strains, particle erosion, and foreign object damage (FOD). Novel EBC chemistries, creative EBC designs, and robust processes are required to meet EBC durability challenges. Engine-relevant testing, characterization, and lifing methods need to be developed to improve EBC reliability. The aim of this Special Issue is to present recent advances in EBC technology to address these issues. In particular, topics of interest include but are not limited to the following: • Novel EBC chemistries and designs; • Processing including plasma spray, suspension plasma spray, solution precursor plasma spray, slurry process, PS-PVD, EB-PVD, and CVD; • Testing, characterization, and modeling; • Lifing.
Download or read book Advanced Ceramic Coatings for Emerging Applications written by Ram Gupta and published by Elsevier. This book was released on 2023-05-20 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Ceramic Coatings for Emerging Applications covers new developments in automotive, construction, electronic, space and defense industries. The book is one of four volumes that together provide a comprehensive resource in the field of Advanced Ceramic Coatings, also including titles covering fundamentals, manufacturing and classification, energy and biomedical applications. These books will be extremely useful for academic and industrial researchers and practicing engineers who need to find reliable and up-to-date information about recent progresses and new developments in the field of advanced ceramic coatings. These books will also be of value to early career scientists providing background knowledge to the field. Smart ceramic coatings containing multifunctional components are now finding application in transportation and automotive industries, in electronics, and energy, sectors, in aerospace and defense, and in industrial goods and healthcare. Their wide application and stability in harsh environments are only possible due to the stability of the inorganic components that are used in ceramic coatings. - Provides comprehensive coverage of emerging applications in advanced ceramic coatings - Features the latest progress and recent technological developments - Includes comparisons to other coatings types (e.g., polymers, metals and enamel) to demonstrate potential, limitations and differences - Contains extensive case studies and worked examples
Download or read book Properties and Characterization of Modern Materials written by Andreas Öchsner and published by Springer. This book was released on 2016-07-30 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on robust characterization and prediction methods for materials in technical applications as well as the materials’ safety features during operation. In particular, it presents methods for reliably predicting material properties, an aspect that is becoming increasingly important as engineering materials are pushed closer and closer to their limits to boost the performance of machines and structures. To increase their engineering value, components are now designed under the consideration of their multiphysical properties and functions, which requires much more intensive investigation and characterization of these materials. The materials covered in this monograph range from metal-based groups such as lightweight alloys, to advanced high-strength steels and modern titanium alloys. Furthermore, a wide range of polymers and composite materials (e.g. with micro- and nanoparticles or fibres) is covered. The book explores methods for property prediction from classical mechanical characterization-related fields of application, for example, from wear, creep, fatigue and crack growth, to specific surface properties, to dielectric and electrochemical values. As in all fields of modern engineering, the process is often accompanied by numerical simulation and optimization.
Download or read book Design of Thermal Barrier Coatings written by Mohit Gupta and published by Springer. This book was released on 2015-05-05 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Methods for Film Synthesis and Coating Procedures written by Laszlo Nanai and published by . This book was released on 2020-03 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Operations Support TOPS II Delivery Order 0007 Thermal Barrier Coatings written by and published by . This book was released on 2005 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work formed the second part of an investigation into the use of Gd203 as an alternative stabilizer for Zr02-based thermal barrier coating (TBC) materials. The current state-of-the-art TBC material, Y203-stablized Zr02 (3.5-4 mole percent y203), referred to as YSZ, suffers from limited durability at use temperature above 100-1200 deg C. Our previous work investigated the influence of Gd203 concentration on the sintering and phase stability of conventional Zr02 powders. In this work, the effect of Gd203 concentration (420mo1%) on the sintering and phase transformation of plasma-sprayed Zr02 powders was investigated and the data were compared with those for YSZ.
Download or read book Low Thermal Conductivity YSZ based Thermal Barrier Coatings with Enhanced CMAS Resistance written by and published by . This book was released on 2015 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal and Structural Properties of Zirconia Based Thermal Barrier Coatings written by J. R. Brandon and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Spray Fundamentals written by Pierre L. Fauchais and published by Springer Science & Business Media. This book was released on 2014-01-24 with total page 1587 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with the fundamentals necessary for understanding thermal spray technology. Coverage includes in-depth discussions of various thermal spray processes, feedstock materials, particle-jet interactions, and associated yet very critical topics: diagnostics, current and emerging applications, surface science, and pre and post-treatment. This book will serve as an invaluable resource as a textbook for graduate courses in the field and as an exhaustive reference for professionals involved in thermal spray technology.
Download or read book Thermal Barrier Coatings Resistant to Glassy Deposits written by Julie Drexler and published by . This book was released on 2011 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two air plasma sprayed TBCs will be shown to be resistant to volcanic ash and CMAS. The first type of coating is a modified 7YSZ coating with 20 mol% Al2O3 and 5 mol% TiO2 in solid solution (YSZ+20Al+5Ti). The second TBC is made of gadolinium zirconate. These novel TBCs impede CMAS and ash penetration by interacting with the molten CMAS or ash and drastically changing the chemistry. The chemically modified CMAS or ash will crystallize into an apatite or anorthite phase, blocking the CMAS or ash from further destroying the coating. A presented mechanism study will show these coatings are effective due to the large amount of solute (Gd, Al) in the zirconia structure, which is the key to creating the crystalline apatite or anorthite phases. In fact, it will be shown that if the industrial standard 7YSZ coatings contained more Y2O3 they would be very effective in stopping CMAS penetration. Lastly, thermal cyclic testing of 7YSZ and YSZ+20Al+5Ti TBCs reveals that partially CMAS-impregnated TBCs can survive mechanically if cycled in thermal gradient while in most isothermal tests they would fail. Since parts in a jet engine are in a thermal gradient, this type of testing should be performed on future CMAS resistant TBCs.
