30 results about "Titanium carbonitride" patented technology

The invention provides a PCBN composite material and a preparation method thereof.The preparation method comprises the steps that two or more of zirconium oxide, titanium nitride, silicon nitride, titanium diboride, silicon carbide, titanium carbide, titanium carbonitride, aluminum oxide and aluminum nitride are mixed, and ceramic composite powder is prepared; the CBN micro powder and a metal binding agent are subjected to ball milling and mixing, and CBN pre-composite micro powder is prepared; mixing the CBN pre-composite micro powder with the ceramic composite powder to obtain a premix, placing the premix in a mold for pre-pressing to obtain a blank piece, and then assembling the blank piece for sintering to obtain a PCBN composite material; the mass percentage content of the ceramic composite powder is 5%-40%, the mass percentage content of the metal binding agent is 15%-30%, and the mass percentage content of the CBN micro powder is 45%-65%. According to the method, the toughness and the stability of the PCBN cutter can be improved on the premise of low content of CBN (Cubic Boron Nitride).

A Ti microalloyed Q355NH steel plate and its preparation method are disclosed, comprising the following components: C≤0.12%; Si: 0.20~0.35%; Mn: 1.0~1.2%; Ni≤0.30%; Cr: 0.40~0.60%; Cu: 0.25~0.35%; Ti≤0.03%; P≤0.02%; S≤0.01%. The beneficial effects of this invention are: by employing Ti microalloying technology, a trace amount of Ti is added to Q355NH steel, which combines with C and N to form fine titanium carbonitride particles, effectively refining the grains and producing a significant precipitation strengthening effect. Thus, while reducing the amount of microalloying elements such as Nb added, the strength, toughness, and weldability of the steel plate can still be guaranteed or even improved, reducing production costs. Simultaneously, these fine titanium carbonitride particles can pin grain boundaries, inhibiting grain coarsening in the weld heat-affected zone, further improving the weldability of the steel plate. Furthermore, the combination of this Ti microalloying technology with controlled rolling and controlled cooling processes can effectively refine and homogenize the microstructure of steel plates, significantly improving their comprehensive mechanical properties and atmospheric corrosion resistance.

The invention relates to a coated cutting tool. Specifically, the present invention relates to a coated cutting tool and a method of making such a coated cutting tool comprising a substrate coated with a multi-layer wear resistant coating comprising a layer of alpha-Al2O3 and a layer of titanium carbonitride, TixCyN1-y, deposited on the layer of alpha-Al2O3, where 0.85 < = x < = 1.3 and 0.4 < = y < = 0.85, wherein TixCyN1-y has a texture coefficient TC (hkl) measured by X-ray diffraction using CuK [alpha] radiation and [theta]-2 [theta] scan and defined according to the Harris formula, where I (hkl) is the measured intensity (integrated area) of (hkl) reflection; i0 (hkl) is the standard intensity according to the standard powder diffraction data of the JCPDS cards No. 42-1489; n is the number of reflections used in the calculation, and wherein the (hkl) reflections used are (1 1), (2 0), (2 0), (3 1), (3 1), (4 0) and (4 2); and TC (1 1) > = 3.

The present application relates to iron-making technology field, propose a kind of for vanadium-titanium magnetite smelting blast furnace hearth structure and cooling control method, the blast furnace structure includes furnace bottom brick lining, hearth side wall brick lining and be located in the hearth side wall brick lining below furnace base;Furnace bottom brick lining and the outside of the hearth side wall brick lining is provided with smooth cast iron cooling wall, the inside of the furnace base is provided with cooling device;The furnace bottom brick lining is successively provided with heat preservation brick layer and heat-conducting brick layer from hearth bottom to furnace base direction, heat preservation brick layer includes dense clay brick and composite mullite brick, the heat-conducting brick layer is semi-graphite carbon brick;Hearth side wall brick lining is built with the composite mullite brick, and in the corner of hearth and furnace bottom, hearth side wall brick lining extends to form brick lining reinforcing structure in the direction of furnace in.The present application solves the problem of excessive deposition of titanium carbonitride caused by improper temperature gradient when smelting vanadium-titanium magnetite, inhibits the accumulation of hearth center and edge bonding, maintains the hearth active and blast furnace smooth.

The application provides a method for preparing titanium tetrachloride by using a fluidized bed, wherein the powder fluidization area and the cooling area are alternately arranged in the fluidized bed, the whole is in a rectangular structure, the powder material is added from one side of the fluidized bed, and is sequentially overflowed through several fluidization areas and cooling areas and then discharged from the outlet; the fluidization gas enters the fluidized bed through the distribution plate at the bottom of the fluidization area, and reacts with the added powder particles at a certain temperature to prepare titanium tetrachloride; and the cooling medium is sent from the bottom of the fluidized bed and discharged from the top outlet after heat exchange. The method uses the slag containing titanium carbide, titanium nitride or titanium carbonitride as the raw material, and reacts with chlorine gas, so that the reaction efficiency is high; the fluidized bed adopts the cross design of the fluidization area and the cooling area, so that the heat released by the chlorination reaction is discharged from the fluidized bed through the cooling medium in time, and the local heat release of the reaction is avoided, and the sintering of the material or even the dead furnace condition is avoided.

The application discloses a kind of ultra-high temperature resistant wear-resistant ceramic matrix composite material and preparation method thereof, belong to ceramic material technical field.The composite material includes the following raw materials: interface modified polyacrylonitrile-based carbon fiber, allyl modified polycarbosilane, polysilazane, silicon carbide, boron carbide, titanium carbide, titanium carbonitride, cobalt, molybdenum, phenolic resin and silane coupling agent;Preparation method specifically includes the following steps: (1) weighing raw materials;(2) the preparation of ceramic precursor;(3) liquid phase impregnation forming and low-temperature curing;(4) high-temperature thermalization and densification treatment;(5) finished product is completed.The application takes carbon fiber as reinforcing framework, takes silicon carbide ceramic as matrix, improves the denseness, high-temperature stability, hardness, fracture toughness and wear resistance of composite material by the design of ceramic matrix of multi-component synergistic strengthening and advanced liquid phase preparation process, so as to significantly improve the comprehensive service performance thereof in extreme environment, and can be used for aero-engine hot end component.

Provided is a lightweight hard alloy which is obtained by sintering a mixed powder that contains, as a main component, a titanium compound composed of titanium carbide and / or titanium carbonitride, contains 5-33 mass% of W and / or Mo in terms of carbide, and contains, as a binder phase component, 5-40 mass% of at least one metal selected from the group consisting of Ni, Co, and Fe, and which includes a hard phase having a core-rim structure. In the cross-sectional structure of the lightweight hard alloy observed by using a scanning electron microscope, the average particle diameter of a core phase having a diameter of D90 or more is 0.8-3.3 μm on a number basis in the particle size distribution of the area circle-equivalent diameter of the core phase of the hard phase having a core-rim structure, and the average of the ratio Dmax / Dmin of the minimum length Dmin to the maximum length Dmax of a straight line that connects the contour and the center of gravity of the core phase having a diameter of D90 or more is 2.0 or less.

The invention discloses a method for accurately measuring the content of titanium carbide and titanium nitride in titanium carbonitride. The method comprises the following steps: separating titanium nitride from titanium carbide by adopting a separation liquid ferric chloride (1.5 mol / L)-hydrochloric acid (4 mol / L)-benzotriazole (0.1%); filtering and fixing the volume to obtain a to-be-detected solution 1; titanium carbide is dissolved with nitric acid (2 + 1); filtering and fixing the volume to obtain a to-be-detected solution (2); respectively measuring the titanium content in the to-be-measured liquid (1) and the to-be-measured liquid (2) by using a spectrophotometric method, and respectively converting the titanium content into the titanium nitride content and the titanium carbide content; and calculating the dissolution rate of the separation liquid to the titanium carbide by adopting an empirical formula, and correcting an analysis result. According to the present invention, the ferric chloride (1.5 mol / L)-hydrochloric acid (4 mol / L)-benzotriazole (0.1%) is adopted to selectively dissolve the titanium nitride in the titanium carbonitride for the first time, such that the technical problem of simultaneous determination of the high-content titanium carbide and the high-content titanium nitride is solved; meanwhile, an analysis result is corrected by adopting an empirical formula, so that the content of titanium carbide and titanium nitride in titanium carbonitride is accurately measured.

The invention discloses equipment and a method for preparing titanium carbonitride powder. The method comprises the following steps: S1, respectively adding titanium dioxide powder and carbon powder into corresponding bins through sealed feed ports; s2, pre-drying and inert gas replacement; s3, the dried titanium dioxide powder and the dried carbon powder enter a ball mill through sealing pipelines to be ground; s4, mixed powder obtained after grinding enters a double-helix conical mixer to be mixed; s5, continuously feeding the uniformly mixed powder into a sealed reaction furnace, and collecting, combusting and discharging CO gas generated in the reaction process through a furnace tail exhaust pipeline; and S6, obtaining a high-purity titanium carbonitride powder finished product. According to the method, multiple times of transfer and exposure of the raw materials are reduced, the production efficiency is improved, the loss of the raw materials is reduced, the moisture absorption and caking risks are completely eradicated, and the product quality is ensured.

The present application belongs to the technical field of pdc drill bit device, disclose a kind of threaded nozzle, material and its casting method, threaded nozzle material mass fraction includes: titanium carbonitride solid solution 50%~55%, nickel 32%~38%, cobalt 3%~8%, chromium 3%~6%, other trace elements≤2%.Threaded nozzle includes: wing, thread, joint;Nozzle body lower end is provided with joint, nozzle body is provided with thread, nozzle body upper side is provided with wing.Ticn-based cermet, its hard phase component tic and tin are very stable carbide and nitride, while wc phase is more prone to oxidation.Ticn-based cermet in 5% nitric acid, 50% sodium hydroxide solution, its corrosion resistance is more than yg8 hard alloy, and the more bonding phase of ticn-based cermet, the better corrosion resistance.In the present application, threaded nozzle has better wear resistance, corrosion resistance and lower cost than hard alloy.

The invention discloses a device and a method for measuring the rate of generating TiC and TiN by coke and titanium-containing blast furnace slag. The device comprises a reaction furnace; the crucible is arranged in the reaction furnace and is used for accommodating titanium-containing slag; one end of the connecting rod is connected with coke and extends into the reaction furnace, so that the coke is immersed into the titanium-containing slag; and the driving device is connected with the other end of the connecting rod and drives the connecting rod and the coke to rotate, so that the reduction reaction of the titanium-containing slag and the coke is completed in the rotating process. According to the scheme provided by the invention, the rotation measure is added, so that titanium carbonitride generated on the reaction interface of the slag and the coke in the measurement process can be quickly diffused into the slag and is closer to the actual environment that the slag in the blast furnace is in a flowing state, and the result generated by the titanium carbonitride can better reflect the actual condition.

The invention discloses an ultrahigh-temperature-resistant and wear-resistant ceramic-based composite material and a preparation method thereof, and belongs to the technical field of ceramic materials. The composite material is prepared from the following raw materials: polyacrylonitrile-based carbon fibers subjected to interface modification, allyl modified polycarbosilane, polysilazane, silicon carbide, boron carbide, titanium carbide, titanium carbonitride, cobalt, molybdenum, phenolic resin and a silane coupling agent. The preparation method specifically comprises the following steps: (1) weighing the raw materials; (2) preparing a ceramic precursor; (3) performing liquid-phase dipping forming and low-temperature curing; (4) carrying out high-temperature thermalization and densification treatment; and (5) finishing a finished product. According to the invention, the carbon fiber is used as a reinforced framework, the silicon carbide ceramic is used as a matrix, and the density, high-temperature stability, hardness, fracture toughness and wear resistance of the composite material are improved through the design of the multi-component synergistically reinforced ceramic matrix and an advanced liquid phase preparation process, so that the comprehensive service performance of the composite material in an extreme environment is remarkably improved; the method can be used for aero-engine hot end components.

The invention provides a preparation method of a high-strength silicon dioxide aerogel composite material, and relates to the field of aerogel material preparation.The preparation method comprises the steps that S1, ethyl alcohol, polysilicate ester, silicate ester, a silane coupling agent with methyl, diluted hydrochloric acid and a functional additive are mixed, and sol A is obtained; s2, adding titanium carbonitride powder and molybdenum disulfide powder into the sol A to obtain sol B; s3, dropwise adding a urea ethanol solution into the sol B to obtain wet gel, and performing dipping compounding on the wet gel and the modified base material to obtain a wet gel composite material; s4, soaking the wet gel composite material in ethanol; and step S5, drying the soaked wet gel composite material. According to the method, the titanium carbonitride reinforced phase powder and the molybdenum disulfide powder are introduced in the gelation stage and are compounded with the modified base material, so that the strength and the wear resistance of the aerogel composite material are improved, and the service life of the aerogel composite material is prolonged.

A cermet, as a base, containing a plurality of hard particles and a bonded phase between the plurality of hard particles. Each of the plurality of hard particles, when viewed in cross section, includes a first region containing Ti, N, and C, and contains a titanium carbonitride phase as a main constituent. Each of the plurality of hard particles, when viewed in cross-section, includes a second region containing one or more metal elements selected from the group consisting of V, Nb, Ta, Cr, Mo, W, Co, and Ni in a larger amount than the first region. The content of the one or more metal elements in the second region is 9.5 mass % or more in a total amount. A cutting tool has a length extending from a first end to a second end, and includes a holder and the insert described above.

The invention relates to a layer system (1) for coating a metal substrate (2a) to form a flow field plate (2), comprising:-at least one cover layer (1a) made of a metal oxide; -at least one intermediate layer (1b) supporting the cover layer (1a); and-a lower layer (1c) supporting the intermediate layer (s) (1b); wherein the cover layer (1a) is formed of an indium tin oxide; wherein the indium tin oxide is doped with at least one element from the group including carbon, nitrogen, boron, fluorine, hydrogen, silicon, titanium, tin, and zirconium; wherein the at least one intermediate layer (1b) is formed from titanium nitride and / or titanium carbide and / or titanium carbonitride and / or titanium niobium nitride and / or titanium niobium carbide and / or titanium niobium carbonitride and / or chromium nitride and / or chromium carbide and / or chromium carbonitride; and wherein the lower layer (1c) is formed of titanium or a titanium-niobium alloy or chromium. The invention also relates to a flow field plate having a layer system (1) of this type, and to a fuel cell (10), an electrolytic cell or a redox flow battery having a flow field plate (2, 2 ') of this type.

A lightweight hard alloy comprising a hard phase with a core-rim structure, the lightweight hard alloy being obtained by sintering a mixed powder containing a titanium compound consisting of titanium carbide and / or titanium carbonitride as a main component, containing 5 to 33 mass% of W and / or Mo in terms of carbide, and containing 5 to 40 mass% of at least one binder phase component selected from the group consisting of Ni, Co and Fe, wherein in a cross-sectional structure of the lightweight hard alloy observed with a scanning electron microscope, the core phases having a core-rim structure have an average particle size of D90 or more on a number basis in the particle size distribution of the area circle equivalent diameter of the core phases, and the average Dmax / Dmin ratio of the shortest length Dmin to the longest length Dmax of the straight line connecting the center of gravity of the core phases of D90 or more to the outline is 2.0 or less.

This cutting tool comprises a substrate and a coating provided on the substrate. The coating includes an alumina layer provided on the substrate, an intermediate layer provided directly on the alumina layer, and a titanium carbonitride layer provided directly on the intermediate layer. The intermediate layer is made of titanium oxycarbonitride, and the titanium carbonitride layer is made of a compound represented by TixCyN(1-y). At a point A, which is 0.2 μm away from an interface I between the intermediate layer and the titanium carbonitride layer in a thickness direction toward the titanium carbonitride layer, an atomic ratio xA of titanium in the titanium carbonitride layer is 1.3 to 1.6, and an atomic ratio yA of carbon in the titanium carbonitride layer is 0.4 to 0.6. At a point B in the titanium carbonitride layer located on an opposite side of the interface I, which is 1.0 μm away from an interface J in a thickness direction toward the titanium carbonitride layer, an atomic ratio xB of titanium in the titanium carbonitride layer is 0.8 to 1.2, and an atomic ratio yB of carbon in the titanium carbonitride layer is 0.3 to 0.5. At a point C, which is the midpoint between point A and point B, an atomic ratio xC of titanium in the titanium carbonitride layer exceeds the atomic ratio xB and is less than the atomic ratio xA, and an atomic ratio yC of carbon in the titanium carbonitride layer is greater than the atomic ratio yB and less than the atomic ratio yA. The thickness of the intermediate layer is 0.5 μm to 1.5 μm, and the thickness of the titanium carbonitride layer is 1.5 μm to 3.5 μm.

The application discloses a kind of high-stability titanium carbonitride conductive fibers and its preparation method and application.The specific preparation method is as follows: titanium carbonitride fiber precursor film doped with metal is prepared and collected by using electrostatic spinning process;Titanium carbonitride fiber precursor film is pre-oxidized and pyrolyzed.The prepared titanium carbonitride conductive fiber has the characteristics of high stability, high conductivity and flexibility, and can be widely used in electrochemical energy storage and conversion process.

Coated Lost-Wax Casting Core The invention relates to a casting core (10) comprising a main part (100) of molybdenum or molybdenum alloy, characterized in that it comprises a coating on the external surface of its main part comprising, from the core outwards, a first layer of titanium carbonitride TiCN (101) and a second layer of alumina Al2O3 (102). Figure for the abstract: Fig. 1.

This application relates to a cobalt-free titanium carbonitride-based cermet for surgical scalpels and its preparation method. The cobalt-free titanium carbonitride-based cermet for surgical scalpels of this application uses a cobalt-free Ti(C,N)-based cermet with a binder phase. It can achieve near-net-shape integration of the handle and blade through powder injection molding. Optimized material formulation and sintering process result in a scalpel that combines high sharpness, high toughness, excellent biocompatibility, and sterilization resistance, fully meeting the requirements for safety and precise operation in medical surgery.

The invention discloses a metal ceramic cutter which is high in hardness, strong in binding force between a coating and a matrix and good in service performance, a preparation method of the metal ceramic cutter and a gear machining method. The preparation method of the metal ceramic cutter comprises the following steps that 100, raw material powder for generating a base body and a forming auxiliary agent are mixed through ball milling, then pressing forming is conducted, and a pressed blank is obtained; the raw material powder comprises titanium carbonitride powder, at least two kinds of metal carbide powder, at least two kinds of metal boride powder and metal binding phase powder; 200, the pressed blank is sintered, and a base body is obtained; and 300, the multi-metal boride target material is deposited on the surface of the base body through a magnetron sputtering method, and the metal ceramic cutter with the multi-metal boride coating is obtained. Wherein the multi-metal boride target material is prepared from the at least two metal borides through hot pressed sintering.

This invention relates to a polycrystalline cubic boron nitride composite sheet and its preparation method. It includes a substrate layer and a polycrystalline layer formed on the surface of the substrate layer. The substrate layer comprises the following raw material components by weight percentage: cobalt 6-9%; tungsten carbide 86-92%; additives 2-5%; the additives being a mixture selected from one or more of titanium carbide, tantalum carbide, niobium carbide, titanium nitride, titanium carbonitride, yttrium oxide, and cerium oxide. The polycrystalline layer comprises the following raw material components by volume percentage: cubic boron nitride 80-95%; metal powder 4.2%-10%; and compound powder 2-15.8%. By controlling the raw material ratio of the polycrystalline layer and the substrate layer, the difference in thermal expansion coefficients between the polycrystalline layer and the substrate layer is reduced, balancing the wear resistance, toughness, and conductivity of the polycrystalline cubic boron nitride composite sheet. Pre-sintering activation treatment and post-sintering heat treatment reduce the risk of subsequent deformation and cracking.

The invention belongs to the technical field of continuous high-linear-speed machining of quenched steel, and particularly relates to a composite sheet for continuous high-linear-speed machining of quenched steel and a preparation process, and the composite sheet comprises the following components in percentage by mass: 45-55% of CBN, 40-50% of titanium carbonitride and 5-10% of aluminum nitride. Compared with the prior art, the CBN composite material has the advantages that the mechanical property, the density, the heat resistance and the wear resistance of the material are improved, the problems that the domestic CBN composite material depends on import, the preparation process is immature and the like are solved, and the CBN composite material is suitable for large-scale production. And the independent innovation ability and competitiveness of the domestic manufacturing industry are improved.

A punch sleeve (1) made of a sintered material comprising the following components: 10-35% by weight of tungsten carbide, a total of 50-60% by weight of one or more selected from titanium carbide, titanium carbonitride and titanium nitride, a total of 35-5% by weight of one or more selected from cobalt and nickel, 1.5-0% by weight of chromium, 2.5-0% by weight of molybdenum, a total of 1-0% by weight of other additives, wherein the sum of the weight percentages of the components is 95-100% by weight.

The invention relates to a casting core (10) comprising a main part (100) made of molybdenum or molybdenum alloy, characterized in that it comprises a coating on the outer surface of its main part comprising, from the core outwards, a first layer (101) made of titanium carbonitride TiCN and a second layer (102) made of alumina Al2O3.

The application discloses a light gradient cemented carbide and a manufacturing method thereof, and relates to the technical field of cemented carbide preparation. The cemented carbide comprises working parts and non-working parts which are sintered together and different in composition. The working parts are metal ceramic cemented carbide materials which are composed of the following components in percentage by weight: titanium carbonitride 35-45%, tungsten carbide 10-20%, tantalum carbide or niobium carbide 15%, molybdenum carbide 5% and nickel 15-25%. The non-working parts are light cemented carbide materials which are composed of the following components in percentage by weight: titanium carbide powder 40-60%, tungsten carbide powder 22-50% and nickel powder or cobalt powder 15-18%. The application has the advantages of reasonable design, large-scale continuous production under the conditions of saving tungsten resources, reducing raw material cost, producing products without deformation and obtaining stable size, and adaptability to different types of cemented carbide products except sealing rings, so that the material has broad spectrum.

A method of forming a deep trench isolation in a radiation sensing substrate includes: forming a trench in the radiation sensing substrate; forming a corrosion resistive layer in the trench, in which the corrosion resistive layer includes titanium carbon nitride having a chemical formula of TiCxN(2-x), and x is in a range of 0.1 to 0.9; and filling a reflective material in the trench and over the corrosion resistive layer.

A cutting tool comprising a substrate and a coating on the substrate,the coating includingan alumina layer on the substrate,an intermediate layer directly on the alumina layer, anda titanium carbonitride layer directly on the intermediate layer,the titanium carbonitride layer being made of TixCyN(1-y),at a point A of titanium carbonitride layer,the titanium carbonitride layer having atomic ratio xA of 1.3 to 1.6 for titanium, and atomic ratio yA of 0.4 to 0.6 for carbon,at a point B of titanium carbonitride layer,the titanium carbonitride layer having atomic ratio xB of 0.8 to 1.2 for titanium and atomic ratio yB of 0.3 to 0.5 for carbon,at a point C of titanium carbonitride layer,the titanium carbonitride layer having atomic ratio xC larger than xB and less than xA for titanium, and atomic ratio yC larger than yB and less than yA for carbon.