Abstract: The research progress in the field of the enhancement and activation of extracting vanadium by direct acid leaching from shale vanadium ore in China in recent years was reviewed. The results show that aid-leaching agents can enhance the destruction of the lattice structure of vanadium shale ore. Amo...
Abstract: The vanadium containing solution is mainly used to obtain vanadium compound and then calcined to prepare vanadium pentoxide, by means of ammonium salt precipitation, hydrolytic precipitation, melamine precipitation, reduction precipitation and other methods. In this paper, the research status, advan...
Abstract: Based on the size of 7.5 t “I” type furnace, the physical model of titanium sponge reactor was established to simulate the temperature field. Under the center feeding condition of TiCl4, it is found that the temperature gradient is formed both horizontally and vertically from the inside-out of the r...
Abstract: Ti3AlC2 powder was synthesized by the pressureless sintering method with a mixture of the low-value titanium sponge, aluminum and carbon at a mixing ratio of 3∶1.2∶1.8. The sintered products at the holding temperature of 1000 ℃ and 1100 ℃ and the influence of different holding times on the experimen...
Abstract: In this paper, the titanium dioxide filter cakes after zinc or aluminum salt treatment from a titanium dioxide factory in Panzhihua were selected as test materials to study the properties of titanium dioxide particles during the calcination process from room temperature to 990 ℃ under the condition ...
Abstract: In view of the current situation that it is difficult to achieve effective utilization of vanadium from calcified vanadium extraction tailings, a process of desulfurization using ammonium bicarbonate followed by acid leaching was proposed. The effects of reaction temperature, adding amount of ammoni...
Abstract: To address the issues of low electrical conductivity and easy clogging of active sites in conventional electrocatalyst materials, a highly conductive and hydrophilic two-dimensional (2D) titanium vanadium carbide (MXene) is used as the catalyst loading substrate via combining metal organic framework...
Abstract: Dielectric ceramic capacitors have important application prospects in energy recovery systems and pulse power fields due to their ultrahigh power density and ultrafast charging- discharging speed. In this paper, Zr-doped BaTi(1-x)ZrxO3 (BTZx) dielectric ceramics were prepared by solution combustion ...
Abstract: Titanium alloys have phase transformation complexity and phase transformation sensitivity, and the influence factors of solution aging process corresponding to microstructure and mechanical properties of high-strength titanium alloys after heat treatment need to be further studied. The TC18 titanium...
Abstract: The surface cracked plate of commercial pure titanium TA2 under compressive load was studied. The plate model with mixed mode semi-elliptical surface crack was established by finite element method, and the stress intensity factor was calculated. At the same time, the effects of stress intensity fact...
Abstract: The true stress-true strain curves of TA9 titanium alloy in the temperature range of 800-920 ℃ and the strain rate range of 0.001-0.125 s−1 were obtained by high-temperature tensile test. The relationship among deformation temperature, strain rate, and flow stress under tensile stress is analyzed. T...
Abstract: In this paper, SiCf/TC11 composites were prepared by magnetron sputtering precursor wire method and hot isostatic pressing. Tensile properties and fracture mechanism of SiCf/TC11 composites at room temperature and 500 ℃ were studied. The experimental results show that the tensile strength of SiCf/TC...
Abstract: A two-pass laser welding test was carried out using TC4 titanium alloy and 316L stainless steel as the base material and pure vanadium as the interlayer material. The influence of welding speed and beam offset on weld formation, microstructure, and mechanical properties were studied and analyzed. Th...
Abstract: Aiming at studying the effects of different preparation methods on the properties, Ti films with a growth rate of 1.0 nm/s and a thickness of 100 nm were prepared on Si(100) wafers with 500 nm thick SiO2 films by magnetron sputtering and electron beam evaporation methods respectively. The thickness,...
Abstract: Electrically conductive cement mortars were prepared by using carbon fiber as a conductive phase and carbonized titanium-bearing blast furnace slag (CTBFS) as an aggregate. The content of carbon fiber on the rupture strength, compressive strength, and electrical resistivity of the as-prepared cement...
Abstract: In view of the high silicon and aluminum content of iron ore tailings (IOT) in Chengde, Hebei province, ZSM-5 zeolite was prepared with IOT as the raw materials. At present, the synthesis of zeolite from solid waste usually uses hydrothermal method, which is a complex synthesis process with low util...
Abstract: Under the background of “achieving peak carbon dioxide emission and carbon neutrality,” high-titanium furnace slag is widely used as coarse and fine aggregate to prepare concrete in Panzhihua city of China. The purpose of this paper is to improve the accuracy of strength detection of high titanium s...
Abstract: Ten groups of super sulfate cement (SSC) were prepared by phosphogypsum, titanium slag, clinker and sodium silicate. The compressive strength, hydration heat release and hydration products of the matrix were studied, and the flexural strength, tensile strength and impact strength after fiber reinfor...
Abstract: Using solidification parameters and surface temperature measurements as boundary conditions, ProCAST software was applied to simulate the heat transfer and solidification process of 960QT steel slab during continuous casting. The effects of casting speed and superheat on the temperature fields of sl...
Abstract: In the continuous casting process, thermal shrinkage deformation of the solidified shell occurs due to the temperature decrease during the cooling process, and this thermal shrinkage deformation is the important basis for designing basic shrinkage gap of the continuous casting machine. In the presen...
Abstract: Fe-Mn damping alloy is a new type of metal damping material discovered in recent years. This paper takes Fe-Mn damping alloy as the research object. The mechanical properties, corrosion resistance and damping properties of the alloy were tested, and the microstructure was characterized by EBSD. The ...
Abstract: The thermal simulation testing machine, OM, TEM and other experimental equipment were used to study the continuous cooling transformation behavior of Ti-Nb microalloyed high-speed guardrail steel in the experiment. The results show that when the cooling rate is 0.5 ℃/s, the austenite of the test ste...
Abstract: The effect of coiling temperature on the microstructure and mechanical property of a Ti-Nb microalloyed steel was studied by simulated hot rolling and coiling tests conducted on a pilot hot rolling mill and heat treatment furnace. The results show that the phase transformation process of steel gradu...
Abstract: Optical microscope (OM), scanning electron microscope (SEM) and electron probe (EPMA) were used to characterize and analyze the microstructure and mechanical properties of a 2.0 GPa hot-formed steel heat-treated by different heat treatment temperature. The results show that the yield strength and te...
Abstract: Taking the control arm welding component of automobile parts factory as the research object, a SYSWELD software is used to optimize the welding heat input and welding sequence of control arm components. The results show that when the welding heat input is too low (2015～2266 J/cm), incomplete penetra...
Abstract: In order to further improve the solidification quality of electroslag ingot, a low frequency electroslag remelting furnace was designed to study the effect of different frequencies on liquid carbides in electroslag ingot. The morphology and composition of liquidated carbides were observed by scannin...
Abstract: The flow stress behavior of A100 ultra-high strength steel under the conditions of strain rate of 0.01~10 s−1, deformation of 63.3% and deformation temperature of 850～1 200 ℃ was studied by compression test with a Gleeble-3500 thermal simulation test machine, and the dynamic recrystallization behavi...
Abstract: Based on TRIZ theory, the function model of ladle pouring system had been established, and the key causes of the problem had been determined by causal chain analysis. By fully applying the tools of technical conflict, physical conflict, material-field model and effect, the start-up process of contin...
Abstract: The morphology and rating of sulfide in the unmodified and modified 38MnVS6 steels were analyzed by means of metallographic microscope, scanning electron microscope and electrolytic etching. The effect of tellurium on the two-dimensional and three-dimensional morphology of sulfides in the steels was...
