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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"High temperature oxidation"”.
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Development of high temperature/oxidation- resistant PVD coatings for cutting tools using HIPIMS
A series of high temperature and oxidation resistant, nanoscale, multilayer PVD, hard coatings have been developed through combine DC Unbalanced Magnetron (UBM) and High Power Impulse Magnetron Sputtering (HIPIMS) deposition technologies. The properties of the coatings lend themselves to the …
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High temperature, oxidation resistant, silicon nitride, ignition-assisted devices in multifuel aviation engines
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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The effect of nitrogen, niobium and temperature of the high temperature oxidation of titanium aluminide alloys
… thrust/weight ratio. Increasing the operating temperature and thereby the engine efficiency has approached the maximum possible operating temperature for currently used materials. A model set of three intermetallics -- unalloyed [gamma]-TiAl, unalloyed [alpha]-Ti 3Al and a nearly stoichiometric …
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Estimation of coping time in pressurized water reactors for accident tolerant fuel claddings
… UO₂ and Zirconium-based claddings. In this work, high-temperature steam oxidation characteristics of potential ATF claddings, monolayer iron-chromium-aluminum (FeCrAl) and Cr-coated Zircaloy, are experimentally investigated. Specifically, this work investigates the high-temperature oxidation …
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Solar receiver coating development: the synthesis and growth of copper chromite spinel particles across sol-gel routes and calcination profiles
… Key requirements of such a coating are its high absorptivity, robustness, and ability to prevent high temperature oxidation of the substrate. This work describes synthesis routes for the creation of CuCr2O4 particles that exhibit adequate sinterability for developing robust solar receiver …
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Multi-component boron coatings on low carbon steel AISI 1018
… by the continuous weighting method. The high temperature oxidation was also detected by isothermal method at a temperature range of 400-800 C for 24 hours. The Rietveld refinement method was used to examine the quantitative phase analysis, crystalline size, microstrain and lattice …
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ΔΟΜΙΚΟΙ ΜΕΤΑΣΧΗΜΑΤΙΣΜΟΙ ΚΑΤΑ ΤΗΝ ΑΝΟΠΤΗΣΗ ΑΝΟΞΕΙΔΩΤΩΝ ΦΕΡΡΙΤΙΚΩΝ ΧΑΛΥΒΩΝ ΚΑΙ Η ΕΠΙΔΡΑΣΗ ΤΟΥΣ ΣΤΗ ΣΥΜΠΕΡΙΦΟΡΑ ΚΑΤΑ ΤΗ ΘΡΑΥΣΗ ΚΑΙ ΚΑΤΑ ΤΗΝ ΟΞΕΙΔΩΣΗ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ
… EFFECT. THE ZR AND NIADDITION IMPROVED THE HIGH TEMPERATURE OXIDATION RESISTANCE OF THE ALLOYS.
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Processing and characterization of laser-synthesized overcoats for surface engineering
… to selectively improve the tribological and high temperature corrosion properties without affecting the bulk-properties of the substrate. The present investigation has been focused on developing such laser-synthesized cost-effective coatings. The major emphasis has been given to identify the …
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Boron induced surface modification of transition metals
… wear resistance, corrosion resistance, and high temperature oxidation resistance improve which make the metal substrate more suitable for industrial applications. These boronized parts are used in many industrial applications like ingot moulds, crucibles, biomedical implants, die-casting …
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Automated reaction mechanism generation : improving accuracy and broadening scope
… tool. An application of the tool to the high temperature oxidation of JP-10, a jet fuel often used in military applications, is described. Using the newly refined RMG system, a detailed chemical kinetic model was constructed for this system. The resulting model represents a significant …
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Characterizing ash properties and effects on Diesel Particulate Filter flow resistance
… particulate emissions in both on and off highway diesel engine use. This particular aftertreatment system is chosen for its high filtration efficiency and relative simplicity. The porous ceramic substrate captures the particulate matter which is comprised of combustible soot and inorganic …
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A study on the cleaning and modification of metal surfaces by direct current cathodic electrolytic plasma process
The processes of surface treatments or surface modifications, more formally known as surface engineering, tailor the surfaces of engineering materials. The treatments are usually intended to change physical properties such as thermal or electrical conductivity, modify the surface dimensions, i.e. …
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Low Temperature Oxidation of Heavy Crude Oil: Experimental Study and Reaction Modeling
… major combustion regions can be recognized: Low Temperature Oxidation (LTO), Thermal Cracking (TC), and High Temperature Oxidation (HTO). LTO provides fuel for HTO to sustain the combustion front. Therefore the success of ISC process directly depends on quality and quantity of LTO residues. The …
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Design Strategies for Improving the Oxidation Resistance of Multi-Principal Element Alloys
… superalloys (SA) have been the cornerstone of hightemperature structural alloys due to their unique yield strength, creep life, and oxidation re-sistance when subject to harsh environments exceeding 1000 °C. While they have withstoodthe increasing operation temperatures seen in turbine engines …
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On the oxidation of high-temperature alloys, and its role in failure of thermal barrier coatings
… turbine blades to provide thermal insulation and oxidation protection. A TBC system consists of (a) an outer oxide layer that imparts thermal insulation, and (b) a metallic layer that affords oxidation protection for the substrate through the formation of a second, protective oxide layer. This …
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Feasibility of Using Oxide Thickness Measurements for Predicting Crack Growth Rates in P91 Steel Components
… predicting the age of cracks that are found in high</p> <p>temperature structural components during service; among the promising ones is the oxide</p> <p>thickness measurement technique. Oxide thickness profiles are taken from crack surfaces of</p> <p>components and used for predicting the rates …
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High temperature steam oxidation of titanium-coated Zircaloy-2 and Titanium-Zirconium Alloys
… gas production due to the exothermic reaction of high temperature steam and the Zircaloy fuel cladding within the reactor during a Loss-of -Coolant Accident (LOCA). The hydrogen, which collected in the reactor vessel and containment buildings, caused devastating hydrogen gas explosions which lead …
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Non-destructive Microstructural Evaluation Of Yttria Stabilized Zirconia, Nickel Aluminides And Thermal Barrier Coatings Using Electrochemical Impedance Spectroscopy
… engines. To fulfill these needs the inlet gas temperatures should be increased in the gas turbine engines, thermal barrier coatings (TBCs) have gained significant applications in increasing the gas inlet temperatures. Insulating characteristics of ceramic TBCs allow the operation at up to …
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