Investigation of Modified Zirconia Thermal Barrier Coatings for Gas Turbine Applications PDF Download
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Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages :
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Author: Gultekin Goller
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
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.
Author: Lewis Research Center
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 24
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Author:
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Category : Power resources
Languages : en
Pages : 294
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Category : Astronautics
Languages : en
Pages : 568
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Author: Xingye Guo
Publisher: Springer Nature
ISBN: 3030586952
Category : Technology & Engineering
Languages : en
Pages : 92
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Book Description
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.
Author: Kang N. Lee
Publisher: MDPI
ISBN: 3039365177
Category : Science
Languages : en
Pages : 168
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Book Description
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.
Author: James D. Cawley
Publisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 36
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309176026
Category : Technology & Engineering
Languages : en
Pages : 102
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Book Description
This book assesses the state of the art of coatings materials and processes for gas-turbine blades and vanes, determines potential applications of coatings in high-temperature environments, identifies needs for improved coatings in terms of performance enhancements, design considerations, and fabrication processes, assesses durability of advanced coating systems in expected service environments, and discusses the required inspection, repair, and maintenance methods. The promising areas for research and development of materials and processes for improved coating systems and the approaches to increased coating standardization are identified, with an emphasis on materials and processes with the potential for improved performance, quality, reproducibility, or manufacturing cost reduction.
Author: William J. Smothers
Publisher: John Wiley & Sons
ISBN: 0470320524
Category : Technology & Engineering
Languages : en
Pages : 234
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Book Description
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.
