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This dissertation by Robert Eriksson focuses on the durability assessment and life prediction of thermal barrier coatings (TBCs), which are used in gas turbines for thermal insulation and oxidation resistance. The study investigates the effects of isothermal oxidation, thermal cycling fatigue, and thermal shock on the adhesion and fatigue life of air plasma sprayed TBCs. It examines different substrate materials, interface roughness, and environmental factors such as water vapor and salt deposits on the performance of TBC systems. The research introduces a life model using Thermo-Calc software to predict Al-depletion and oxidation kinetics. Intended for an academic audience, this work contributes to the field of advanced materials engineering by providing insights into the mechanisms affecting TBC durability.
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This thesis investigates the failure mechanisms of thermal barrier coatings (TBCs) used in gas turbines, focusing on cyclic oxidation and hot corrosion. The study compares conventional atmospheric plasma sprayed yttria-stabilized zirconia (YSZ) with newly developed nano YSZ and gadolinium zirconate coatings. Through experimental analysis and finite element modeling, it examines crack propagation, corrosion susceptibility, and diffusion of minor elements in TBCs. The research aims to enhance the durability and performance of gas turbines by exploring advanced materials and deposition techniques. This work is intended for materials scientists and engineers specializing in thermal coatings.
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This dissertation by Krishna Praveen Jonnalagadda focuses on the failure mechanisms and life prediction of thermal barrier coatings (TBCs) used in gas turbines. The research investigates the performance of high-temperature coatings, particularly yttria-stabilized zirconia (YSZ), and explores alternatives like pyrochlores for improved thermal efficiency. The study examines the effects of corrosion, thermal cycling, and deposition techniques on TBCs, comparing atmospheric plasma spray (APS) and suspension plasma spray (SPS) methods. Key findings include the impact of corrosion under varying conditions and the development of life models based on fracture mechanics to predict coating lifespan. The work is intended for researchers and engineers in materials science and engineering, with the goal to enhance TBC performance in industrial applications.
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Thermal barrier coatings. --- Protective coatings. --- Coating compositions --- Coatings --- Corrosion and anti-corrosives --- TBCs (Thermal barrier coatings) --- Composite materials --- Protective coatings
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Thermal barrier coatings. --- Heat --- Transmission. --- Heat transfer --- Thermal transfer --- Transmission of heat --- Energy transfer --- TBCs (Thermal barrier coatings) --- Composite materials --- Protective coatings
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Iron and steel bridges --- Thermal barrier coatings. --- Metal spraying. --- Maintenance and repair.
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Thermal Barrier Coatings, Second Edition plays a critical role in counteracting the effects of corrosion and degradation of exposed materials in high-temperature environments such as gas turbine and aero-engines. This updated edition reviews recent advances in the processing and performance of thermal barrier coatings, as well as their failure mechanisms. Novel technologies for the manufacturing of thermal barrier coatings (TBCs) such as plasma spray-physical vapor deposition and suspension plasma spray, are covered, as well as severe degradation of TBCs caused by CMAS attack. In addition to discussions of new materials and technologies, an outlook about next generation TBCs, including T/EBCs is discussed. This edition will provide the fundamental science and engineering of thermal barrier coatings for researchers in the field of TBCs, as well as students looking for a tutorial.
Thermal batteries --- Materials. --- Temperature control. --- Temperature control --- Batteries, Thermal --- Heat-activated batteries --- Thermal cells --- Electric batteries --- Thermal barrier coatings
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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 advanc
Coating materials. --- Protective coatings. --- Thermal barrier coatings. --- Protective coatings --- Thermal barrier coatings --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials Science --- Heat resistant materials. --- Shielding (Heat) --- Ceramic coating. --- Coatings --- Thermal properties. --- Coating, Ceramic --- Refractory coating --- Heat shielding --- Thermal shielding --- Insulation (Heat) --- High temperature materials --- Materials --- Materials at high temperatures
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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.
Materials Science. --- Tribology, Corrosion and Coatings. --- Energy Efficiency (incl. Buildings). --- Engineering Thermodynamics, Heat and Mass Transfer. --- Engineering. --- Chemistry, inorganic. --- Ingénierie --- Materials. --- Mechanical Engineering --- Chemical & Materials Engineering --- Engineering & Applied Sciences --- Materials Science --- Mechanical Engineering - General --- Protective coatings. --- Thermal barrier coatings. --- Thermal barrier coatings --- Mathematical models. --- TBCs (Thermal barrier coatings) --- Coating compositions --- Materials science. --- Energy efficiency. --- Thermodynamics. --- Heat engineering. --- Heat transfer. --- Mass transfer. --- Tribology. --- Corrosion and anti-corrosives. --- Coatings. --- Composite materials --- Protective coatings --- Coatings --- Corrosion and anti-corrosives --- Energy Efficiency. --- Construction --- Industrial arts --- Technology --- Inorganic chemistry --- Chemistry --- Inorganic compounds --- Mass transport (Physics) --- Thermodynamics --- Transport theory --- Heat transfer --- Thermal transfer --- Transmission of heat --- Energy transfer --- Heat --- Mechanical engineering --- Chemistry, Physical and theoretical --- Dynamics --- Mechanics --- Physics --- Heat-engines --- Quantum theory --- Consumption of energy --- Energy efficiency --- Fuel consumption --- Fuel efficiency --- Power resources --- Energy conservation --- Surface coatings --- Materials --- Surfaces (Technology) --- Coating processes --- Thin films --- Anti-corrosive paint --- Atmospheric corrosion --- Metal corrosion --- Metals --- Rust --- Rustless coatings --- Chemical inhibitors --- Chemistry, Technical --- Fouling --- Weathering --- Paint --- Waterproofing --- Friction --- Corrosion --- Deterioration --- Surfaces
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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.
Applied Mathematics --- Materials Science --- Engineering & Applied Sciences --- Chemical & Materials Engineering --- Aircraft gas-turbines --- Thermal barrier coatings. --- Blades. --- Blades --- Materials. --- TBCs (Thermal barrier coatings) --- Gas-turbines, Aircraft --- Gas-turbines --- Composite materials --- Protective coatings --- Mechanics. --- Mechanics, Applied. --- Surfaces (Physics). --- Engineering. --- Solid Mechanics. --- Characterization and Evaluation of Materials. --- Mathematical Modeling and Industrial Mathematics. --- Machinery and Machine Elements. --- Construction --- Industrial arts --- Technology --- Physics --- Surface chemistry --- Surfaces (Technology) --- Applied mechanics --- Engineering, Mechanical --- Engineering mathematics --- Classical mechanics --- Newtonian mechanics --- Dynamics --- Quantum theory --- Materials science. --- Mathematical models. --- Machinery. --- Machinery --- Machines --- Manufactures --- Power (Mechanics) --- Mechanical engineering --- Motors --- Power transmission --- Models, Mathematical --- Simulation methods --- Material science --- Physical sciences --- Curious devices
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