6 results about "Titanium sulfide" patented technology

This invention relates to a method for preparing ultra-pure smelting of high-strength and high-toughness special steel at ultra-low temperatures. The chemical composition (wt%) is controlled as follows: C≤0.01%, Si≤0.05%, Mn≤0.05%, S≤0.005%, P≤0.005%, Ni: 17.5~18.5%, Co: 8.0~9.0%, Mo: 3.0~3.8%, Al: 0.05~0.15%, Ti: 0.20~0.35%, H≤1.0 ppm, O≤16 ppm, N≤15 ppm, with the balance being Fe and other unavoidable impurities. Core Technology: A five-element synthetic slag system of CaO-SiO2-Al2O3-MgO-CaF2 is introduced during the VIM stage. Utilizing the high-speed directional solidification effect of VAR steady-state remelting, and through matching the smelting environment and cooling rate, the coarse, brittle titanium sulfide phase is transformed into finely dispersed Al-Mg-Ti-S-O multiphase composite oxides. This achieves composite modification of inclusions and reduces their number density from 45 inclusions / mm². 2 Reduced to 8.5 pieces / mm 2 It effectively eliminates the hazards of large particles >4μm. The average grain diameter of the original austenite is refined from 42.37μm to 26.38μm, the elongation of the material reaches 21.06%, and the impact energy is as high as 143.63J, significantly improving the resistance to brittle fracture and possessing extremely high engineering application value.

The invention relates to a method for the preparation of titanium or tantalum sulfides comprising the following steps: a) Adding a titanium or tantalum precursor to an anhydrous solvent under inert conditions, b) Adding a sulfur source to the mixture of step a), c) optionally providing a substrate for heterogeneous growth, d) transferring the mixture of step b) and optionally the substrate of step c) into a suitable container, under inert conditions and sealing the container, e) heating the sealed autoclave of step d) to a temperature of between 170°C and 250°C, preferably between 200°C and 230°C, especially to 210°C, thereby applying autogenous pressure, and f) obtaining, optionally washing the titanium sulfide or tantalum sulfide particles with an organic solvent, and drying, and to the use of the titanium or tantalum sulfide thus prepared, as well as to a substrate with a layered crystal titanium or tantalum sulfide grown on the substrate according to the method above.

The invention relates to the technical field of wear-resistant materials, in particular to titanium monosulfide particles and a composite material thereof as well as preparation and application of the titanium monosulfide particles and the composite material thereof. The titanium monosulfide particles are of a layered approximately elliptical block structure formed by stacking two-dimensional nanosheets; the particle size of the titanium monosulfide particles is 20-30 microns, obvious gaps exist between the two-dimensional nanosheet layers, and the size of the gaps is 0.1-0.5 micron. The titanium monosulfide particles disclosed by the invention have good ultrahigh-temperature wear resistance and lubricity.

This invention provides a method for producing titanium-based metals that allows the Ca in the deoxidizing and desulfurizing agent to contribute effectively to the deoxidation reaction, thereby reducing the O content of the titanium-based metal raw material. [Solution] The present invention provides a method for producing a titanium-based metal from a titanium-based metal raw material containing oxygen, wherein the method includes an oxygen reduction step for reducing the oxygen content of the titanium-based metal raw material, the method comprising: a melting step of heating the titanium-based metal raw material together with a sulfur source containing elemental sulfur and / or titanium sulfide to obtain a melt; a deoxidation step in which the melt contains a deoxidizing and desulfurizing agent containing Ca, and in the melt, the Ca of the deoxidizing and desulfurizing agent reacts with at least a portion of the oxygen in the titanium-based metal raw material; and a desulfurization step in which, after the deoxidation step, the melt contains a deoxidizing and desulfurizing agent containing Ca, and in the melt, the Ca of the deoxidizing and desulfurizing agent reacts with at least a portion of the sulfur in the sulfur source.

The invention discloses a titanium tetrasulfide / carbon material composite positive electrode material for an all-solid-state lithium battery and a preparation method of the titanium tetrasulfide / carbon material composite positive electrode material, and belongs to the technical field of electrochemical energy storage. The composite positive electrode material is formed by compounding amorphous TiS4 nanospheres, reduced graphene oxide (rGO), carbon nanotubes (CNT) or vapor-grown carbon fibers (VGCF) through a liquid phase method, and the mass ratio of the carbon material is 5%-15%. In the preparation process, targeted surface modification processes are designed for different carbon materials, then a uniform mixing state is fixed through liquid phase dispersion and freeze drying, and finally, tight compounding of TiS4 and the carbon materials is achieved through inert atmosphere high-energy ball milling. The defects that pure TiS4 is low in electronic conductivity, high in charge-discharge volume expansion rate and large in interface impedance are effectively overcome, the composite positive electrode material is excellent in compatibility with sulfide solid electrolyte, and the assembled all-solid-state lithium battery has high energy density, long cycle stability and high safety and is suitable for large-scale production. The method is suitable for electric automobiles, wearable electronic equipment and energy storage systems.

The invention discloses a method for preparing a macro-micro directional structure through variable-diameter fused deposition, and belongs to the technical field of additive manufacturing. The preparation method comprises the following specific steps: adding part of titanium trisulfide nanorods into polyether-ether-ketone powder, carrying out high-energy ball milling, adding the rest of filler and antistatic agent, carrying out low-energy ball milling, carrying out multi-stage sequential blending to obtain composite powder, and carrying out screw segmented heating, melting and extrusion and gradient slow cooling and shaping to obtain the titanium trisulfide / polyether-ether-ketone composite material. And finally, the ratio Vp / f of the printing speed to the wire feeding speed in the forming process is controlled, ordered stacking deposition is conducted on a fused deposition path in the single direction, and the macro-micro orientation structure with the titanium trisulfide nanorod orientation consistent with the polyether-ether-ketone printing path direction is prepared. The method is easy to operate, the process is flexible and controllable, and the prepared titanium trisulfide nanorod / polyether-ether-ketone macro-micro orientation structure has the advantages of being good in orientation, high in heat conductivity, high in electrical conductivity, good in wear resistance, large in tensile strength and the like and can be widely applied to the fields of aerospace, electronic chips, medical instruments, transportation and the like as a supporting structure.