369 results about "Titanium carbonitride" patented technology

The invention relates to ceramic coating powder the ceramic phase of which is coated by a metallic phase cobalt or/and a metallic phase nickel. The metallic phase cobalt and the metallic phase nickel are obtained by means of a liquid phase reduction method; and the ceramic phase is at least one of titanium carbonitride, titanium carbide, titanium nitride, tungsten carbide, silicon carbide, niobium carbide, tantalum carbide, aluminum oxide, zirconium oxide, magnesium oxide, boron nitride and silicon nitride. A method for preparing the ceramic coating powder is the liquid phase reduction method to carry out a reduction reaction between cobalt or/and nickel ions in a plating solution to generate the metallic phase cobalt or/and nickel which is deposited on the surface of a ceramic core to form the ceramic coating powder; and the process steps are as follows: (1) pre-treatment of the ceramic powder; (2) preparation of the plating solution; (3) liquid-phase reduction reaction; and (4) plating post treatment.

The invention discloses a nano silicon nitride and boron nitride reinforced titanium carbonitride based cermet. A reinforced phase is added into a base material having a main phase of titanium carbonitride Ti(C, N) and a binder phase of nickel and cobalt metals, is at least one of nano silicon nitride and nano boron nitride, and is 0.5 to 2.5 volume percent of the base material. The preparation method comprises the following process flows: preparing raw material powder containing the nano silicon nitride and/or nano boron nitride; mixing; adding a forming agent; performing wet grinding; sieving; drying and granulating; performing compression molding; sintering in nitrogen; and obtaining the cermet. The cermet has the advantages of high hardness, high strength and high toughness, and can be widely applied to middle and low carbon steel and low alloy steel high-speed cutting tool materials; and the preparation process is easy to control and is suitable for large-scale industrial production.

The invention discloses a nitrogen-containing hard alloy based on a multi-element composite titanium carbonitride solid solution. A hard phase of the alloy is WC and a solid solution (Ti, M) (Cx, N1-x); a binding phase is Co and/or Ni; the hard phase and the binding phase are uniformly distributed in the hard alloy; raw materials of the hard alloy are Co and/or Ni powder, WC powder and solid solution (Ti, M) (Cx, N1-x) powder, and the nitrogen element in the hard alloy is introduced through the solid solution (Ti, M) (Cx, N1-x) powder; and in the solid solution (Ti, M) (Cx, N1-x), x is more than 0 and less than 1, and a component M is at least two of W, Mo, Ta, Nb, V, Cr, Zr, Hf, Y and lanthanides. A preparation method for the hard alloy comprises the following steps of: (1) mixing the raw materials and granulating; (2) molding; and (3) sintering under low pressure.

A surface-coated cutting tool member includes a tungsten carbide based cemented carbide substrate, a titanium carbonitride based cermet substrate, or a cubic boron nitride based sintered substrate; and a hard coating layer of a nitride compound containing aluminum and titanium, formed on a surface of the substrate using a physical vapor deposition method in an overall average thickness of 1 to 15 μm. The hard coating layer has a component concentration profile in which maximum aluminum containing points and minimum aluminum containing points appear alternatingly and repeatedly at a distance from 0.01 to 0.1 μm in a direction of thickness of the hard coating layer. The amount of contained aluminum (or titanium) is changed from the maximum aluminum containing points to the minimum aluminum containing points. The maximum aluminum containing points satisfy a formula: (Al_XTi_1-X)N, wherein X is between 0.70 to 0.95. The minimum aluminum containing points satisfy a formula: (Al_YTi_1-Y)N, wherein Y is between 0.40 to 0.65.

The invention discloses an enhanced metal ceramic abrasion-resistant composite material and a preparation method thereof. The composite material is composed of, by mass, 25-35 parts of nano molybdenum carbide, 15-25 parts of nano ceramic powder, 10-15 parts of glass fiber, 5-10 parts of cobalt, 10-15 parts of chrome, 10-15 parts of titanium carbonitride, 1-3 parts of zirconium oxide, 3-5 parts of silicon oxide, 8-10 parts of cerium oxide, 1-3 parts of aluminium oxide, 5-10 parts of niobium carbide, 5-15 parts of silicon carbide, 1-3 parts of vanadium carbide, 4-9 parts of copper, 1-5 parts of titanium powder, 1-5 parts of coupling agents, 1-3 parts of antistatic agents and 1-3 parts of curing agents. The preparation method of the enhanced metal ceramic abrasion-resistant composite material just comprises mixing, drying, sintering and cooling. The metal ceramic composite material has good properties that the bending resistant strength is up to 2500 MPa and the Rockwell hardness is up to 93; in addition, the metal ceramic composite material also has good properties of abrasion resistance and high temperature resistance; the preparation method is simple and feasible and suitable for application and popularization on a large scale.

The invention discloses a titanium carbonitride sliding fireproof material and making method, which comprises the following parts: 65-80wt% corundum, 1-20wt% one or more component of zirconium dioxide or zirconium corundum or zirconium mullite, 1-10wt% alumina micro-powder, 0. 2-5wt% titanium oxide powder, 0-5wt% boron carbide powder, 0-5wt% carborundum powder, 0. 5-5wt% aluminium powder, 0. 5-5wt% silicon powder, 1-5wt% graphite and 2-6wt% organic connecting agent, wherein the materials are blended to smelt and mould, which are sintered under 1300-1600 deg. c. The invention saves manufacturing cost, which improves high-temperature strength and abrasion resistant.

The invention discloses a nanometer WC-Co composite powder modified Ti(CN) based cermet and the preparing method thereof. Titanium carbonitride is used as the main parent metal, metal cobalt and/or nickel are/is used as the binder of raw material powder, carbide and tantalum-niobium sosoloid are used as the additive. The cermet is characterized in: the cermet is added with 6.0% to 27% by weight of raw material power nanometer WC-Co composite powder; the cermet is prepared with the raw material powder by ball grinding crushing, dispersing the nanometer WC-Co composite powder, uniformly mixing, press forming, vacuum or pressure sintering, etc. Compared with traditional cermet, since the cementing phase and the crystal boundary are strengthened, the nanometer WC-Co composite powder modified Ti(CN) based cermet has better wearing resistance, higher strength, fracture toughness and red hardness, thus a tool bit manufactured with the cermet has superior cutting property.

The invention discloses a boracic titanium carbonitride based cermet tool bit material and the preparing method thereof. The tool bit material is based on carbonitride as the parent metal, characterized in the tool bit is composed of 0.005% to 0.25% by mass of boron, 6% to 11% by mass of C, 2% to 7% by mass of N, 35% to 70% by mass of Ti, 5% to 20% by mass of W, 0 to 12% by mass of Mo, 0 to 9% by mass of Ta, 1% to 7% by mass of Nb and 6% to 25% by mass of Co and Ni, wherein boron is prepared by adding one or more selected from single substance boron, titanium diboride, molybdenum boride, boron carbide and boric oxide which are in raw material power form. The tool bit material is prepared mainly by mixing the raw material, ball-milling dispersing, press forming, pre-sintering and high-temperature sintering, its high-temperature hardness, high-temperature strength, red hardness and inoxidability are obviously improved, the cutting speed is greatly increased, and the service life is notably entended.

One mode of the blade made of titanium carbonitride-based cermet is that it has a structure composed of 75-90 area % of hard phase and the balance is a binding phase. The hard phase has: the core is made of titanium carbonitride Phase composition, the peripheral part is composed of a first hard phase with a core structure composed of Ta and/or Nb, Ti, and W complex carbonitride (hereinafter expressed as (Ti, W, Ta/Nb)CN) phase; Both the core and the peripheral part are the second hard phase with a core structure composed of (Ti, W, Ta/Nb) CN phase; the third hard phase with a single-phase structure composed of TiCN phase, and the binding phase has: Co: 18-33%; Ni: 20-35%; Ta and/or Nb, and Ti, the total amount: 5% or less; W: 40-60%. Another form of the titanium carbonitride-based cermet blade is the sum of the value of Ti converted into carbonitride, the value of Ta and/or Nb converted into carbide, and the value of W converted into carbide It is 70-95% by mass, the value of W converted into carbide is 20-35% by mass, Co and Ni are 5-30% by mass, and have a structure composed of hard phase and binder phase. The hard phase has (Ti , W, Ta/Nb) CN, the binding phase is mainly composed of Co and/or Ni, and W, and 40-65% by mass of W is contained in the hard phase. This cutting tool has a holder and the cermet blade fixed by the holder.

The present invention provides a cutting tool in which the hard coating layer demonstrates superior chipping resistance. The cutting tool has a tool base composed with tungsten carbide-based cemented carbide or titanium carbonitride-based Cermet, and a hard coating layer provided on the surface thereof; wherein the hard coating layer includes: (a) a Ti compound and/or Zr compound layer, which is a lower layer, comprising one or more layers of a TiC layer, TiN layer, TiCN layer, TiCO layer, TiCNO layer, ZrC layer, ZrN layer, ZrCN layer, ZrCO layer, ZrCNO layer and (b) an aluminum oxide layer having an α crystal structure which is an upper layer, including the highest peak in the inclination section within a range of 0–10.

The invention discloses Ti(C,N) base metal ceramic and a preparation method thereof. Raw materials of the metal ceramic comprise titanium carbonitride Ti(0.5 of C and 0.5 of N), tungsten carbide WC, molybdenum carbide/molybdenum Mo2C/Mo, niobium carbide NbC, vanadium carbide VC, cobalt Co and nickel Ni powder, wherein the content of NbC ranges from 3 wt% to 15 wt%, the VC content is 0.3-3%, and the VC content changes along with the content of NbC. Hard phases formed by the materials are of two core-ring structures, one structure is a ring-shaped phase structure containing typical black core phases and inner ring phases, or outer ring phases and black core phases, and the other structure is a ring-shaped phase structure containing white core phases. The total credit of the black core phasesin the ring-shaped phase structure containing the black core phases and the inner ring phases, or the outer ring phases and the black core phases is 10-20%, the total credit of the inner ring phasesis 0.5-2%, and the total credit of the white core phases in the ring-shaped structure containing the white core phases is 5-10%. Chemical components of some or all white core phases are different fromthose of the inner ring phases, and the content of the Nb element in some or all white core phases is 30-40 wt% higher than the content of the Nb element in the inner ring phases. The Ti(C,N) base metal ceramic has thermal shock resistant performance and cutting performance.

A surface-coated cutting tool includes a tool substrate made of tungsten carbide-based cemented carbide or titanium carbonitride-based cermet; and a hard coating layer formed by vapor-depositing in order, a lower layer (a), an intermediate layer (b), and an upper layer (c) on the tool substrate. The lower layer (a) is a Ti layer composed of one or more of a titanium carbide layer, a titanium nitride layer, a titanium carbonitride layer, a titanium carboxide layer, and a titanium oxycarbonitride layer, and having a thickness of 3 to 20 μm. The intermediate layer (b) is an aluminum oxide layer having a thickness of 1 to 5 μm, and having an α-type crystal structure in a chemically vapor-deposited state. The upper layer (c) is an aluminum oxide layer having a thickness of 2 to 15 μm, and containing one or more elements of Ti, Y, Zr, Cr, and B.

The mechanical activation-reaction heat treatment process of preparing nanometer titanium carbonitride powder with nanometer titania and nanometer carbon powder as material includes the technological steps of: compounding, mechanical activating, (drying,) loading, reaction heat treatment, and sieving. The process is simple, low in cost and easy in industrial scale production. By means of controlling C/Ti ratio, mechanical ball milling activation time, reaction heat treatment temperature and time, nitrogen pressure and other technological factors, nanometer titanium carbonitride powder in different carbon contents ay be synthesized. The prepared nanometer titanium carbonitride powder is spherical, and has high dispersivity, average granularity below 100 nm and purity over 99 %.

The invention provides an etching agent for a titanium carbonitride coating on the surface of a hard alloy cutter and a method for using the same, and relates to a cutter coating etching agent, in particular to an etching agent formula for analyzing the microstructure of a MT-CVD titanium carbonitride coating on the surface of the hard alloy cutter and a method for using the same. The invention provides the etching agent for the titanium carbonitride coating on the surface of a hard alloy cutter, which can effectively show the microstructure of the MT-CVD titanium carbonitride coating on the surface of the hard alloy cutter, and a method using the same. The etching agent comprises the following components in portion by weight: 30 to 40 portions of nitric acid, 10 portions of hydrofluoric acid and 10 portions of water. The using method comprises the following steps of: sample preparation, namely hot-pressing, inserting, grinding and polishing; and etching operation, namely before etching, washing the sample, drying the sample, putting the sample in the etching agent for etching, taking the sample out, washing the sample, putting the sample in absolute ethyl alcohol for ultrasonic washing, drying the sample, storing the sample in a dryer and then observing the sample by a scanning electron microscope.

This invention relates to a method for preparing SiC whiskers toughened Ti(CN)-based metal ceramic tool blade. The tool blade is composed of Ti (CN) as the major phase, SiC whiskers as the toughening agent, and metal binding phase and carbide hard phase as the additives. The method comprises: mixing the above components, molding, and sintering in vacuum to obtain a high compactness. Compared with traditional TN metal ceramic tool blade, the SiC whiskers toughened Ti(CN)-based metal ceramic tool blade has such advantages as high strength, high toughness, high wear resistance, high heat resistance, and high cuttability, and can be used for high speed milling, finish turning or semi-finish turning of carbon steel, stainless steel, hardened steel, wear-resistant cast iron and high-strength steel.

The present invention discloses a high capacity lithium ion battery containing metal conductive substances. The battery comprises a positive electrode sheet, a negative electrode sheet, separation membranes, an electrolyte, a binder and a sealing material. A conductive substance of the positive electrode sheet comprises a metal carbide, a metal boride or a metal nitride. A conductive substance of the negative electrode sheet comprises a metal carbide, a metal boride or a metal nitride. The metal carbide is titanium carbonitride, tungsten carbide or titanium carbide, vanadium carbide, tantalum carbide, or a co-melting body of tungsten carbide and titanium carbide. The metal boride is a molybdenum boride, tungsten boride or vanadium boride. The metal nitride is titanium nitride, tungsten nitride or tantalum nitride. The conductive material of the positive electrode sheet further can contain powder metal, and the conductive material of the negative electrode sheet further can contain powdered metal, wherein the powdered metal is nickel powder, copper powder or chromium powder.

A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme includes a CVD titanium carbonitride coating layer containing titanium carbonitride grains that are of a pre-selected grain size. The coating scheme further includes a first titanium/aluminum-containing coating layer containing first titanium/aluminum-containing grains applied so as to be farther away from the substrate than the titanium carbonitride coating layer. The first titanium/aluminum-containing grains are of a pre-selected grain size. The coating scheme also includes a CVD alumina coating layer containing alumina grains applied so as to be farther away from the substrate than the first titanium/aluminum-containing coating layer. The alumina grains are of a pre-selected grain size.

The invention relates to the field of chemical engineering high molecular materials and provides non-stick paint and a preparation method thereof in order to solve the problems of poor abrasive resistance, rigidity and the like of the existing polytetrafluoroethylene non-stick paint. The non-stick paint comprises the following ingredients by weight percentage: 20-65% of blended modified emulsion, 5-35% of pigment, 10-38% of filling, 0.15-25% of thickening agent, 2-28% of amorphous silica, 1.2-16% of surfactant (II), 10-55% of solvent, 0.5-25% of titanium carbonitride, 0.3-13% of defoaming agent, 0.6-12% of pH (potential of hydrogen) regulator and 0.3-25% of film former, wherein the sum of the weight percentages of the ingredients is 100%. The non-stick paint has the characteristics of lower surface energy, better abrasive resistance and high rigidity.

A polycrystalline cubic boron nitride compact which comprises greater than 75 volume % and not greater than 90 volume % cubic boron nitride particles, the cubic boron nitride particles comprising particles of at least two average particle sizes, and a binder phase constituting the balance of the compact and comprising at least one titanium compound selected from titanium boride, titanium nitride, titanium carbide and titanium carbonitride and at least one aluminium compound selected from aluminium oxide, aluminium boride, aluminium nitride, aluminium carbide and aluminium carbonitride.

This invention relates to high specific volume cathode foil solid electrolytic capacitor and its preparation method. This invention provides rolling type solid electrolytic capacitor that dielectric medium is high conductivity polymer, purpose made high specific volume cathode foil is used in the capacitor, so the electric capacity is large, resistor is low. This invention includes aluminum shell, two outgoing line that welded on aluminum peduncle, the peduncle is connected to the cathode and anode foils, the foils wind into capacitor core after isolated by membrane. The core is set in the shell, a layer alumina is brought to the aluminum foil of the cathode foil, and a layer of titanium, titanium nitride or titanium carbonitride membrane is formed on the alumina surface. Solid conducting material is set on the membrane between the two poles. The content of the capacitor in this invention is large, ESR is low, life is long, capability is reliable, it can be widely applied to modern communication, computer, and high performance civil and military digital product.