On the oxidation state of titanium in titanium dioxide [PDF]
J. Phys. Chem. Lett., 2017, 8, pp 1593-1598, 2017 The oxidation state of titanium in titanium dioxide is commonly assumed to be +4. This assumption is used ubiquitously to rationalize phenomena observed with TiO2. We present a comprehensive electronic structure investigation of Ti ions, TiO2 molecules and TiO2 bulk crystals, using different density functional theory and wave function-based approaches,
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Thermal and Oxidation Stability of Ti$_x$W$_{1-x}$ Diffusion Barriers Investigated by Soft and Hard X-ray Photoelectron Spectroscopy [PDF]
, 2021 The binary alloy of titanium-tungsten (TiW) is an established diffusion barrier in high-power semiconductor devices, owing to its ability to suppress the diffusion of copper from the metallisation scheme into the surrounding silicon substructure. However, little is known about the response of TiW to high temperature events or its behaviour when exposed
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Effect of microstructure on low-cycle fatigue property of Ti6321 alloy
Materials Research Express, 2021 The low-cycle-fatigue behavior of Ti6321 alloy with bimodal and lamellar microstructure have been investigated by analyzing of strain-cycles curve under different stress amplitudes. The results show that under the stress amplitude of 600 MPa, the fatigue
Fei-Peng An, Qian-Li Liu, Peng Jiang
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Ordered C vacancies in titanium carbides: a correlation between crystal structure and the effects on oxidation behavior at elevated temperature [PDF]
NPJ Materials Degradation, 2019, 2017 It has been widely accepted that the introduction of titanium carbides into titanium-based alloys can significantly enhance the oxidation resistance due to their superior physicochemical stability at elevated temperatures. The present study reported for the first time that the ordered C vacancies within titanium carbides could lead to an uncommon ...
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Ignition resistance and mechanisms of TC11 titanium alloys with flame retardant coating
Journal of Aeronautical Materials, 2019 The effect of YSZ+NiCrAl-B.e composite coating on the ignition resistance of TC11 titanium alloy was studied by using the method of friction in oxygen-enriched atmosphere. Combining friction and wear analysis and unsteady heat conduction calculation, the
MI Guangbao +5 more
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Study on the Behavior Mechanism of K and Na during the Synthesis of VN Alloy
Metals, 2022 In this paper, the sources of K and Na in vanadium-nitrogen (VN) alloys and their effects on the furnace structure were studied. The results show that K and Na are mainly present as counter-ions of decavanadate and dodecanadate in ammonium polyvanadate ...
Lanjie Li +5 more
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Effect of secondary carbides on the core-rim structure evolution of TiC-based cermets
Materials Research Express, 2021 Herein, the effect of adding VC with different contents and Mo _2 C, WC and TaC on the core-rim structure evolution of TiC-based cermets was investigated using x-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy.
Min Chen +3 more
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Increasing the active surface of titanium islands on graphene by nitrogen sputtering [PDF]
Applied Physics Letters 106, 083901 (2015), 2014 Titanium-island formation on graphene as a function of defect density is investigated. When depositing titanium on pristine graphene, titanium atoms cluster and form islands with an average diameter of about 10nm and an average height of a few atomic layers.
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Stability of charges in titanium compounds and charge transfer to oxygen in titanium dioxide [PDF]
, 2018 We investigate the charge density distribution in titanium dioxide, molecular titanium complexes and a variety of periodic titanium compounds using delocalization indices and Bader charge analysis. Our results are in agreement with previous experimental and theoretical investigations on the charge stability and deviation from formal oxidation states in
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Effect of Electric Current Heat Treatment on Commercially Pure Titanium Sheets
Metals, 2021 Rapid electric current heat treatment has been successfully applied to a cold-rolled sheet of commercially pure titanium (CP Ti). The electric current heat treatment was conducted at various temperatures (400, 500, 600 and 700 °C) by altering the current
Chan Hyeok Lee +7 more
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