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Showing 1 to 9 of 9 for “"Thermal barrier coatings (tbc)"”.
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Geometric Effects of Thermal Barrier Coating Damage on Turbine Blade Temperatures
<p>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 …
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Modelling Thermal Conductivity of Porous Thermal Barrier Coatings for High-Temperature Aero Engines
Thermal Barrier Coatings (TBC) are used to shield hot sections of gas turbine engines, helping to prevent the melting of metallic surfaces. TBC is a sophisticated layered system that can be divided into top coat, bond coat, and the super-alloy substrate. The highly heterogeneous microstructure of …
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Analysis of parasitic losses in heavy duty diesel engines
… well as from studies in literature. The use of thermal barrier coatings (TBC) was investigated as a novel approach to strategically increase cylinder liner temperatures in order to reduce power cylinder friction. By coating selected parts of the liner where piston speeds are high, local liner …
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Deposition of yttria-stabilized zirconia thermal barrier coatings by laser-assisted plasma coating at atmospheric pressure
… to deposit the yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBC) at atmosphere pressure. These coatings can be applied on silicon wafers, and multi-layer nickel-based superalloy substrates (René N5), by a new deposition technique called laser-assisted plasma coating at atmospheric …
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In-Situ Investigations of Calcium-Magnesium-Aluminosilicates (CMAS) Infiltration Effects on Thermal Barrier Coatings Under Extreme Environments Replicating Jet Engines
… interact and degrade the high temperature thermal barrier coatings (TBC) protecting underlying superalloy turbine blades vital to engine operation. These CMAS particulates melt within the engine and infiltrate into the ceramic coatings. In electron-beam physical vapor deposited (EB-PVD) …
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Experimental Investigation of Particulate Deposition on a Simulated Film-Cooled Turbine Vane Pressure Surface in a High Pressure Combustion Facility
… the cooling scheme and can erode or react with thermal barrier coatings (TBC). A study was performed to examine the evolution and contributing factors to the growth of deposit structures in a simulated gas turbine environment. Tests were performed in the high pressure/temperature aerothermal …
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Experimental Study of Gas Turbine Endwall Cooling with Endwall Contouring under Transonic Conditions
… of greenhouse gas emissions from coal fired thermal power plants and crisis of reliable energy resources has profoundly increased the importance of natural gas based power generation as a major alternative in the last few decades. Although gas turbine propulsion system had been primarily …
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Geopolymer-derived ceramics and composites
… tectosilicate material systems with tailorable thermal expansion was developed with the goal of designing new candidate materials for environmental barrier applications. The materials were studied with in situ high temperature synchrotron X-ray diffraction to explore the atomic mechanisms …
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Synchrotron X-Ray Diffraction and Piezospectroscopy used for the Investigation of Individual Mechanical Effects from Environmental Contaminants and Oxide Layer Undulations in Thermal Barrier Coatings
<p>The durability of Thermal Barrier Coatings (TBCs) used on the turbine blades of aircraft and power generation engines has been known to be affected by sand particle ingression comprised of Calcium-Magnesium-Alumina-Silicate (CMAS). Previous studies have shown that these effects present …