Article
Engineering, Chemical
Yosep Han, Seongmin Kim, Byunghun Go, Sujeong Lee, Seongkyun Park, Ho-Seok Jeon
Summary: An optimized magnetic separation process was proposed to improve the recovery of high-content vanadium and titanium concentrates from vanadium-titanium magnetite ore. By crushing and grinding the ore samples, an optimum grinding time and magnetic intensity were determined, leading to satisfactory grade and recovery of vanadium and titanium concentrates.
Article
Thermodynamics
Yujie Wang, Erik Hagen, Prithwish Biswas, Haiyang Wang, Michael R. Zachariah
Summary: In this study, composites of Al, B, and Ti with KClO4 were prepared using 3D printing, and their combustion characteristics were studied using high-speed videography and pyrometry. The type of fuel was found to strongly affect the combustion characteristics, with Al forming droplets with Al2O3 caps and coalescing before departing the burning surface, while B and Ti formed fractal-shaped agglomerates. The burning particles' temperatures were determined using color imaging-pyrometry. The differences in combustion characteristics were attributed to the physical properties of the fuels and their corresponding oxides.
COMBUSTION AND FLAME
(2023)
Article
Geology
Richard L. Langford, Timothy J. Ivanic, Richard J. Arculus, Kevin J. A. Wills
Summary: Layered mafic intrusions have economic significance for metals like chromium and iron, with the Windimurra Igneous Complex in Western Australia being the largest in Australia. The Upper Zone of the complex is rich in iron and other minerals, making it a promising target for exploration.
ORE GEOLOGY REVIEWS
(2021)
Article
Chemistry, Physical
Wen Wang, Chang Xin, Zaiqiang Feng, Gang Li, Ruizhu Zhang, Junhua Hu, Mingqi Tang, Yahui Liu, Wei Zhang
Summary: This study investigated the influence of niobium carbide (NbC) incorporation on the structure and properties of Microarc Oxidation (MAO) coatings prepared on Ti alloy and Al alloy. The results showed that adding NbC particles improved the forming speed and compactness of the MAO coatings, resulting in significantly enhanced frictional property and corrosion resistance.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Wen Wang, Chang Xin, Zaiqiang Feng, Gang Li, Ruizhu Zhang, Junhua Hu, Mingqi Tang, Yahui Liu, Wei Zhang
Summary: The influence of niobium carbide (NbC) incorporation on the structure and properties of Microarc Oxidation (MAO) coatings on Ti alloy and Al alloy was investigated. Adding NbC particles to the solution improved the forming speed and compactness of the MAO coatings, resulting in enhanced frictional property and corrosion resistance.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Coatings & Films
Xiong Yang, Yarong Chen, Zhenlin Zhang, Yan Liu, Shimei Tao, Guo Li, Hui Chen
Summary: An in-situ autogenous ceramic phase reinforced laser cladding with vanadium (V) and titanium (Ti) was developed to enhance the surface properties of rolls in iron and steel metallurgy. The study evaluated the influence of V and Ti content on the microstructure, hardness, shear property, and wear behavior of the laser cladding. The results showed that increasing V and Ti content led to the precipitation of TiC and VC, resulting in changes in shape and improved hardness. However, the weak bonding strength between large-sized carbide and matrix negatively affected the shear properties. The cladding layer with 5% V and Ti exhibited superior wear resistance compared to the absence of V and Ti, indicating the significance of ceramic phase size on wear property.
SURFACE & COATINGS TECHNOLOGY
(2023)
Review
Chemistry, Physical
Xi Qian, Weihua Ao, Hao Ding, Xuan Wang, Sijia Sun
Summary: This article summarizes the processes of regeneration and elemental extraction of spent SCR catalysts, and provides directions for converting them into photocatalysts, highlighting the significance of reducing photocatalyst production costs.
Review
Engineering, Environmental
Jiancheng Yang, Jiachun Su, Long Chen, Yuan Huang, Mengkai Gao, Mingkai Zhang, Mingtao Yang, Xiao Zhang, Fumei Wang, Boxiong Shen
Summary: This article reviews many modification experiments on V/Ti catalysts, including studies on the performance and mercury removal mechanisms of these catalysts, aiming to guide future improvements.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zimeng Zhu, Hao Yu, Kun Wang, Yu Tian, Jinyao Gao
Summary: This study comparatively investigates the microstructure, precipitation behavior, and mechanical properties of hot-rolled V and V-Ti microalloyed steels. The results show that the substitution of trace Ti affects the grain size and precipitation behavior of V, leading to a decrease in yield strength of the traditional hot-rolled steel.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jia-Xin Li, Yu-Hong Chen, Zhang-Jun Bai, Bao-Jun Zhao, Liang Jiang, Lan-Er Wu
Summary: The study found that the oxidation behaviors of ternary and quaternary Ta-W alloys at high temperatures are influenced by the addition of Al and Ti, resulting in different oxidation kinetic equations. The kinetics of quaternary alloys still obey the parabolic law, while that of ternary alloys changed to a linear law after a certain period of oxidation.
Article
Nanoscience & Nanotechnology
Wentao Zhang, Jilin Xie, Yuhua Chen, Liping Zhang, Limeng Yin, Timing Zhang, Shanlin Wang
Summary: Magnetic pulse welding is used to join dissimilar metals Al/Ti, forming a gradient structure at the joint interface. The structure consists of amorphous, nano-scale, and ultrafine equiaxed grains, which are formed due to lattice collapse, super-diffusion, limited time and energy input, as well as dynamic recrystallization.
SCRIPTA MATERIALIA
(2022)
Article
Thermodynamics
Abdulkerim Okbaz, Abdulkerim Karabiber, Adem Yar, Zeynep Kinas, Adem Sarilmaz, Faruk Ozel
Summary: By optimizing the thickness of the silicone material and tuning the triboelectrification characteristics with Al or Ti conductive materials, the electricity generation capacity of a silicone and glass fiber-based TENG has been enhanced. The TENG shows the highest performance when decorated with 2.5 wt% Al or 5 wt% Ti, with peak power densities of 22.6 W/m^2 and 21.3 W/m^2, respectively.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Robert Josef Enzinger, Martin Luckabauer, Norihiko L. Okamoto, Tetsu Ichitsubo, Wolfgang Sprengel, Roland Wurschum
Summary: A detailed understanding of the kinetics of phase formation in fi-stabilised titanium is crucial for their applicability, but specialized measurement techniques are needed due to the complex nature and long timescales of the transformations. High-stability isothermal laser dilatometry was used to study the volume changes of Ti-21 at. pct V samples during phase formation. Different behaviors were observed between samples with different solute oxygen content, and the temperature ranges for diffusionless and diffusion-assisted isothermal w-formation as well as w-to-a transformation were determined. The results confirm recent findings on the distinction between diffusionless and diffusion-assisted isothermal w formation modes. Modelling of w-phase formation using Austin-Rickett kinetics revealed temperature-dependent formation rates, which were used to develop isothermal TTT-diagrams reflecting the strong influence of oxygen content.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Marzena Mitoraj-Krolikowska, Ewa Drozdz
Summary: This paper investigates the oxidation behavior of titanium-aluminum and titanium-aluminum-niobium systems using the temperature-programmed oxidation and reduction method, revealing interesting phenomena in the initial stages of oxidation. The results provide important insights into the oxidation mechanism.
Article
Nanoscience & Nanotechnology
A. O. Mosleh, A. D. Kotov, V. Vidal, A. G. Mochugovskiy, V. Velay, A. V. Mikhaylovskaya
Summary: This study investigates the influence of initial microstructure and its strain-induced evolution on superplastic deformation behavior and formability of a titanium-based alloy. The results indicate that samples with a higher fraction of recrystallized grains exhibit better superplasticity and higher quality of formed parts.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)