203 results about "Metal binding" patented technology

The invention relates to the technical field of conductive copper paste, in particular to conductive copper paste prepared by combining liquid nonferrous metal with graphene and a preparation method of the conductive copper paste. The preparation method comprises the following steps: weighing nano-copper coated graphene composite powder, a liquid nonferrous metal, a binder, trifluoropropyltrimethoxysilane, an auxiliary agent and copper powder, and then preparing trifluoropropyltrimethoxysilane into a dilute solution; copper powder and the nano-copper coated graphene composite powder are mixed to obtain composite powder; the liquid nonferrous metal and the composite powder are stirred to obtain metal paste; and adding a resin solution and an auxiliary agent into the metal paste to form printing paste, and then standing and curing. According to the conductive copper paste, the liquid nonferrous metal serves as a main binding phase, the defect that the welding thrust is low due to a traditional resin system is overcome, the problems of dispersion and interface compatibility are solved through cooperation of the nano-copper-coated graphene and the silane coupling agent, and finally the conductive copper paste with extremely low resistance, high stability and ultrahigh welding thrust is obtained.

The invention belongs to the technical field of grinding, and particularly relates to a metallic bond diamond grinding wheel, a preparation method of the metallic bond diamond grinding wheel and a thinning method. The diamond grinding block comprises a porous diamond grinding material, a metal binding agent and a pore forming agent. The porous diamond abrasive is prepared by carrying out a thermochemical corrosion method on diamond; the metal bonding agent comprises copper-tin alloy powder, graphite powder, nano Al2O3, cadmium powder and polyimide resin. Compared with the prior art, the problem that in the prior art, the thinning technological parameters of the grinding wheel are not suitable for the novel grinding wheel with the fine granularity is solved. According to the scheme, the novel grinding wheel with the fine granularity is provided, the thinning parameters are researched on the basis of the novel grinding wheel, and therefore better machining efficiency and silicon wafer surface quality can be obtained under the grinding wheel and the thinning process parameters.

The invention provides a display chip, a display device and a preparation method thereof, and the display chip comprises an epitaxial layer which comprises a first semiconductor layer, a quantum well light-emitting layer and a second semiconductor layer, the first reflecting layer is positioned on one side, deviating from the first semiconductor layer, of the second semiconductor layer; the first metal binding layer is located on the side, away from the epitaxial structure, of the first reflecting layer; the heat dissipation layer comprises a first heat dissipation layer and / or a second heat dissipation layer, the first heat dissipation layer is located between the epitaxial structure and the first reflection layer, the second heat dissipation layer is located on the side, away from the epitaxial structure, of the first reflection layer, and the second heat dissipation layer is provided with a first opening exposing the first reflection layer; the first metal binding layer is arranged on the side, away from the first reflecting layer, of the second heat dissipation layer and fills the first opening. The heat dissipation performance of the display chip can be improved.

The invention relates to the field of material surface treatment, and discloses a silica gel and metal combined treatment process which comprises the following steps: S1, ultra-short pulse laser is adopted to machine a three-dimensional micro-nano composite structure on the surface of a titanium alloy, the structure comprises a periodic groove array and surface nano holes, and the surface roughness Ra of the titanium alloy is larger than or equal to 5 microns; and S2, a titanium nitride transition layer and a siloxane self-assembly molecular layer are sequentially formed on the roughened titanium alloy surface through atomic layer deposition, and a gradient chemical interface is formed. According to the method, the micro-nano composite structure is processed through ultra-short pulse laser, the interface mechanical embedding area is remarkably increased, the two-dimensional rough limitation of a traditional sand blasting process is broken through, deep barb-shaped anchoring is achieved, the anti-stripping capacity is greatly enhanced, gradient chemical bonding is formed by the atomic layer deposition titanium nitride transition layer and the amino self-assembly molecular layer, and the anti-stripping performance is improved. The thermal expansion difference is effectively buffered, and the interface high-temperature resistance is improved.

The invention belongs to the technical field of advanced metal ceramic composite materials, and particularly relates to high-toughness Ti (C, N)-based metal ceramic and a preparation method and application thereof. The high-toughness Ti (C, N)-based metal ceramic comprises the following components in percentage by weight: 50 to 70 percent of solid solution, 15 to 25 percent of metal binding phase, 0.1 to 0.5 percent of rare earth oxide or rare earth salt and 15 to 25 percent of carbide phase, the solid solution contains an amplitude-modulated decomposition structure. The solid solution hard phase with an amplitude modulation decomposition structure is reserved in the alloy containing a certain amount of metal binder, so that the metal ceramic material has higher fracture toughness, bending strength and high-temperature toughness compared with traditional Ti (C, N)-based metal ceramic under the condition that the hardness is kept unchanged.

The invention discloses a conductive paste, a metallized substrate and a metallization process for manufacturing the metallized substrate, the conductive paste comprises metal particles, the particle size of the metal particles is 0.1-10 [mu] m, and the mass ratio of the metal particles is 80-98%; in the metallization process, a copper layer is arranged on the hole wall of a through hole or a blind hole of a substrate, then conductive slurry is filled in the hole with the copper layer, heating sintering treatment is carried out, and after heating sintering is carried out in an inert gas atmosphere at the temperature of less than or equal to 300 DEG C, metal particles can be fused to form a connection structure or a eutectic structure. A reinforcing layer can be formed between the nano metal particles and the copper layer, and the reinforcing layer is a metal bonding layer or an intermetallic compound layer. The metallization mode is suitable for a through hole or a blind hole of a glass / silicon / ceramic substrate with a high aspect ratio and a micro aperture, and the technical problems that complete filling is difficult to achieve and filling defects exist in an existing electroplating process, the electrical resistivity of conductive paste is high, and the interface bonding force is insufficient can be solved.

The invention provides a steel member welding device, and relates to the technical field of welding, the steel member welding device comprises a fixing frame body, and a stabilizing support is installed at the position of the included angle of the bottom edge of the fixing frame body; a collecting cover is mounted at the bottom of the stable bracket; a collecting box is mounted at the bottom of the inner side of the collecting cover, and two collecting air pumps are mounted at the top of the collecting box; a positioning support plate is mounted at the top of the rear side of the fixed frame body; a driving motor is mounted on the front side of one end of the positioning supporting plate, and second rotating transmission rods are rotationally mounted at the two ends of the inner side of the positioning supporting plate correspondingly. The inner side of a welding seam is finely polished through the polishing wheel at the bottom of the bearing plate, dirt, rust and other impurities on the surface of the welding seam are effectively removed, it is ensured that the welding seam can contain more welding water, the welding firmness degree and the overall quality are improved, and the problems that the containing space of a molten pool is limited due to the fact that the local width of the welding seam blocked by impurities is usually narrow are solved. And metal combination in the welding seam is not sufficient.

The invention relates to the technical field of material protection, in particular to a lead-bismuth-resistant coating and a preparation method thereof.The coating is composed of a metal bonding layer, a functional transition layer and a corrosion-resistant layer, the metal bonding layer is formed by compounding a high-entropy alloy and a medium-entropy alloy, a component gradient transition structure is formed, the high-entropy alloy is a near-equal-atomic-ratio alloy of Fe, Co, Ni, Cr and Al, and the medium-entropy alloy is a near-equal-atomic-ratio alloy of Fe, Co, Ni, Cr and Al. %, and the medium-entropy alloy is a FeCoNiCr system quaternary alloy, and the content of the Al element is 5-10 at. The functional transition layer is a transition metal nitride layer; and the corrosion-resistant layer is an eutectic composite layer of rare earth oxide and stabilized oxide. Therefore, the problems of insufficient bonding strength, limited corrosion resistance, poor process stability and the like in the prior art are solved.

The invention relates to a preparation method of a metallized film on the surface of a thin-wall special-shaped plastic device, and relates to the technical field of plastic surface metallization. The method comprises the following steps: S10, activating the surface of a plastic substrate to prepare an ion activation layer; s20, a metal film layer is formed on the side, away from the plastic substrate, of the ion activation layer through evaporation, and the metal film layer comprises a metal bonding layer and a conductive metal layer which are sequentially stacked; wherein first evaporation is adopted for forming the metal bonding layer, and the first evaporation time is 1-3 min; the step of forming the conductive metal layer is at least one time of second evaporation, and the duration of single second evaporation is 3-6 min; the time interval of any two adjacent times of second evaporation is 3-20 min; the time interval between the first evaporation and the first second evaporation is 5-30 min; and S30, a protective film layer is formed on the side, away from the plastic base body, of the metal film layer. The thin-wall plastic metallized device obtained by the preparation method provided by the invention is high in size precision, and the metallized film is firmly combined with the plastic substrate.

The invention discloses a welding method for enhancing the bonding strength of graphite films and metal, which belongs to the technical field of connecting piece welding and comprises the following steps of: S1, arranging and stacking flexible graphite films in parallel, performing surface treatment on a welding part at the end part of a graphite film stacking body, then putting metal solder into the upper layer and the lower layer of the end part of the graphite film stacking body, and welding the upper layer and the lower layer of the end part of the graphite film stacking body; a graphite film-solder laminated body is obtained; and S2, the graphite film-solder laminated body is put into the metal end with the inner surface roughened, and a graphite film-metal composite end part with extremely high bonding strength is obtained through vacuum hot-pressing brazing. According to the method, the characteristics of inorganic nonmetal and metal are fully combined, the influence of an interface, the vacuum degree and mechanical pressure on the welding strength is considered, and the bonding strength of the graphite film and the metal end is remarkably improved.

The invention discloses a double transition metal doped graphene catalyst and application thereof, the double transition metal doped graphene catalyst is of a hexagonal crystal system structure, and the space group is P6 / mmm; the composition form of the active center is Cu2C3N3, Nb2C3N3, Ta2C3N3, Rh2C6, Rh2C3N3 and Rh2N6, the hydrogen evolution free energy of the active center is-0.03 eV,-0.09 eV, 0.10 eV, 0.12 eV,-0.21 eV and 0.06 eV respectively, the metal binding energy of the active center is-4.53 eV,-8.60 eV,-8.03 eV,-6.13 eV,-7.11 eV and-5.62 eV respectively, the metal forming energy of the active center is-0.54 eV,-1.94 eV,-0.06 eV,-0.64 eV,-1.62 eV and-0.13 eV respectively, and the active center has good catalytic activity, structural stability and preparation feasibility and is used for

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).

The invention belongs to the technical field of thermal power heating surface treatment, and provides a boiler heating surface high-temperature corrosion protective coating and a preparation method thereof in order to solve the technical problems that in the prior art, a nano ceramic coating and a metal alloy coating for treating thermal power boiler heating surface high-temperature corrosion are insufficient in adhesive force, prone to falling off and short in protection service life. Through multi-layer structure design and technological parameter optimization, a coating system has continuous thermal expansion coefficient gradient distribution in the interval of 500-900 DEG C, the metal bonding layer at the bottom layer has a pore structure which can effectively absorb thermal stress, the nano ceramic layer at the surface layer can maintain high-temperature stability, and it is verified that the overall bonding strength is larger than or equal to 35 MPa, and the thermal expansion coefficient is larger than or equal to 10%. Compared with a traditional single-layer coating, the adhesive force is improved by 200% or above, and therefore the technical problems that in the prior art, adhesive force is insufficient, thermal stress is not matched, and high-temperature softening fails can be effectively solved.

The invention relates to the technical field of grinding wheels, in particular to a copper-titanium-based aluminum oxide grinding wheel and a preparation method and application thereof. The preparation method comprises the following steps: mixing the aluminum oxide grinding material, the metal binding agent and the auxiliary binding agent to obtain a mixture; carrying out cold press molding on the mixture to obtain a green body; and sintering the green body to obtain the copper-titanium-based aluminum oxide grinding wheel. The metal binding agent comprises Cu powder, Ti powder, Nd powder and Y powder according to the mass ratio of (58-80): (20-40): (1-4): (1-4). The aluminum oxide grinding material reacts with titanium atoms in the metal binding agent to generate a titanium oxide compound and a copper-aluminum oxide compound, the holding effect of the metal matrix on aluminum oxide can be improved, the self-sharpening performance of the grinding wheel is improved, and the grinding efficiency of the grinding wheel is improved. And the Nd powder and the Y powder can effectively reduce the residual stress during sintering, inhibit hot cracks at the interface of the matrix and the aluminum oxide, and also can be used as a second phase to improve the strength of the copper-titanium matrix and improve the wear resistance of the aluminum oxide grinding wheel.

This invention relates to a diamond non-stick surface and cooking utensils featuring such a surface, wherein the diamond non-stick surface includes a metal substrate and a diamond non-stick layer. The diamond non-stick layer, adhered to the metal substrate, comprises a metal bonding layer, multiple euhedral diamond crystals, and a gap filler. The diamond crystals are bonded to the metal substrate via the metal bonding layer. The gap filler, made from a non-stick coating, is disposed in the gaps between adjacent diamond crystals and atop the metal bonding layer, ensuring the combined average thickness of the metal bonding layer and the gap filler is less than the sieving particle size of the diamond crystals. When applied to the food-contact surfaces of cooking utensils, this diamond non-stick surface effectively prevents food from sticking to the spaces between the diamond crystals, significantly enhancing the surface's non-stick performance.

The invention discloses a precise TPI-copper-based metal composite binding agent grinding tool and a preparation method thereof. The grinding tool comprises the following components in parts by weight: 100 parts of a grinding material, 10-30 parts of a resin binding agent, 60-90 parts of a copper-based metal binding agent and 2 parts of a wetting agent. The thermoplastic polyimide TPI is added into the formula, a large number of ether bonds, alkyl groups and rigid group benzene rings are introduced into the molecular structure of the TPI, the processability of the TPI is improved, meanwhile, the defect of insufficient heat resistance is overcome, and therefore the TPI resin binding agent better in temperature matching performance with a copper-based metal binding agent is obtained. In the composite superhard grinding tool prepared from the copper-based metal binding agent and the TPI resin binding agent, the existence of the metal binding agent plays a role in supporting a framework, and the strength and hardness of the grinding tool are guaranteed; the TPI resin binding agent increases the elasticity and the self-sharpening property of the grinding tool, so that the self-sharpening property of the grinding tool in the working process is improved, and better workpiece processing surface quality can be obtained.

The utility model discloses a composite copper foil for a semi-solid lithium battery, which comprises a film layer, two sides of the film layer are respectively provided with a metal isolation layer, one side of the metal isolation layer far away from the film layer is provided with a metal combination layer, and one side of the metal combination layer far away from the metal isolation layer is provided with a conductive copper layer. And a metal protection layer is arranged on one surface, far away from the metal bonding layer, of the conductive copper layer. The weight of the semi-solid lithium battery can be reduced, the manufacturing cost of the semi-solid lithium battery can be reduced, and the service life of the semi-solid lithium battery can be prolonged.

This invention relates to the field of materials science, specifically to a method for preparing a high-bonding, ultrahard nanolayered thin film, the film itself, and its applications. The film comprises a Cr / Ti metal bonding layer, a CrTiN intermediate layer, a TiNC transition layer, and an a-C:Ti nanocomposite surface layer sequentially deposited on a substrate surface. The a-C:Ti ultrahard nanolayered thin film prepared by this invention achieves multi-layer stacking at the microscale by controlling the periodic modulation structure of the bonding layer, intermediate layer, and transition layer, effectively suppressing dislocation and crack propagation. Through Ti doping modification and gradient periodic modulation structure design, the internal stress of the film is reduced, improving its bonding strength, wear resistance, and toughness, reducing the risk of coating cracking or peeling, and enhancing the film's service stability. The a-C:Ti ultrahard nanolayered thin film of this invention is particularly suitable for applications such as precision machining tool coatings, surface strengthening of aero-engine gears and bearings, and wear protection of microelectromechanical systems (MEMS).

A coating on a process chamber component includes a metallic bond layer deposited on a surface of the component. A thermal barrier layer is deposited on the bonding layer. A substantially non-porous ceramic sealing layer is deposited on the thermal barrier layer. The sealing layer is substantially conformable to irregularities of the surface of the thermal barrier layer. The chemical composition of the sealing layer is selected to resist erosion from halogen-containing chemicals.

The invention relates to a method for preparing a structured grinding wheel through ultrasonic vibration assisted laser cladding. An ultrasonic vibration process and a laser cladding process are combined. The grinding wheel base body is connected with ultrasonic vibration equipment, and normal vibration is transmitted; metal binding agent powder and abrasive particles are mixed according to the proportion; and depositing a binding agent layer and an abrasive particle layer on the end face of the vibrating grinding wheel base body according to the determined process parameters by adopting laser cladding equipment according to the designed'impact-free track 'path. The method has the advantages of being short in period, simple in process, prominent in abrasive particle, high in abrasive particle holding force, low in grinding temperature, good in workpiece surface quality and the like, and by means of the cavitation effect of ultrasonic vibration and the acoustic streaming stirring effect, the defects that the number of defects in a laser cladding grinding wheel coating is large, and the mechanical performance is poor are avoided to the maximum extent; and meanwhile, the characteristic of high design freedom degree of the abrasive particle layer deposited through the laser cladding technology is exerted, different material binders and abrasive particles can be selected according to different scenes, the pattern of the abrasive particle layer is customized, and the method is suitable for machining difficult-to-machine materials with different requirements.

The invention discloses a water-tree-resistant ultra-high-voltage power cable which comprises a water-blocking conductor, an insulation shielding layer, a metal water-blocking layer and an outer protective layer which are sequentially arranged from inside to outside in a wrapping mode, and the insulation shielding layer comprises a wrapping conductor shielding layer, an extruded conductor shielding layer, an extruded insulation layer and an extruded insulation shielding layer which are sequentially arranged from inside to outside. The metal water-blocking layer comprises a longitudinal water-blocking layer, a metal shielding layer, a metal binding layer, a shielding wrapping layer and a radial water-blocking layer which are sequentially arranged from inside to outside, the water-blocking conductor comprises a plurality of stranded conductor units, the outer side of each conductor unit is provided with a longitudinal wrapping double-sided insulating water-blocking tape, water-blocking powder is filled among the conductor units, and the longitudinal wrapping double-sided insulating water-blocking tape is provided with a longitudinal wrapping double-sided insulating water-blocking tape. And the outer protective layer is formed by high-density polyethylene and a wear-resistant anti-termite nylon sheath through double-layer co-extrusion. The method has the advantages that water trees are reduced, the reliability and the long service life of the ultrahigh-voltage power cable are guaranteed, and the transverse size of the ultrahigh-voltage cable is reduced.

The invention relates to a diamond grinding wheel and a preparation method and application thereof, in particular to the technical field of precision machining.The diamond grinding wheel is composed of, by mass, 25%-50% of diamond grinding materials, 45%-70% of metal binding agents and 4%-8% of auxiliary binding agents; wherein the auxiliary adhesive comprises a long-chain silane coupling agent, polyethylene glycol fatty acid ester and polyethylene glycol. According to the diamond grinding wheel provided by the invention, by introducing the specific auxiliary adhesive, the binding force of the diamond abrasive and the metal powder is improved, meanwhile, the interfacial tension between the metal powder and the diamond abrasive is reduced, and the wettability is improved, so that the surface of the diamond abrasive can be better coated with the metal powder; and therefore, efficient bonding of the diamond and the metal bonding agent is achieved, and falling of the abrasive in the using process is avoided.

A electrical connection element includes a planar mating surface adapted for mating with a metal bonding surface, a rim that forms an enclosed shape around the planar mating surface, and a plurality of outgassing grooves formed in the planar mating surface, wherein each of the outgassing grooves comprises a proximal end that is spaced apart from the rim and a distal end that intersects the rim, and wherein a cross-sectional area of each of the outgassing grooves increases along a lengthwise direction going from the proximal end to the distal end.

The invention relates to conductive particles, an anisotropic conductive material, and a method for producing conductive particles. Conductive particles are dispersed in a resin composition of an anisotropic connection material containing a binder resin and a solvent, including: a core; a conductive layer disposed on the core, the conductive layer comprising a metal; insulating particles provided on the conductive layer, the insulating particles being connected by a first substituent bonded to the metal of the conductive layer, and being provided in the first region of the conductive layer; the hydrophobic surface treatment layer is arranged on the conductive layer, is connected with the conductive layer through a second substituent group combined with the metal of the conductive layer, and is arranged in the second area of the conductive layer; the first region and the second region are not overlapped.

A grinding wheel dressing tool with hollow spheres preferably includes a tool shank and a dressing portion. The tool shank preferably includes a shank portion and a tool body. The shank portion extends from one end of the tool body and a dressing portion cavity is formed in an opposing end. The dressing portion preferably includes a quantity of diamond grit, metal bond powder, binder and a plurality of hollow spheres. The dressing portion cavity is preferably filled to a top with metal bond powder. The diamond grit, the metal bond powder and the binder are mixed together to form a grit mixture. A tubular mold is slipped over a top of the tool body. The dressing portion is created by forming alternative layers of grit mixture and hollow spheres in the tubular mold. The tubular mold is heated and the grit mixture pressed with a plunger.

The utility model relates to a new energy lithium battery binding post, which comprises an installation seat, a metal binding post is installed on the installation seat, a knurling groove is arranged on the metal binding post, a dustproof cap is sleeved on the metal binding post, the metal binding post is matched with the dustproof cap, a positive electrode mark and a negative electrode mark are arranged on the dustproof cap, and the knurling groove is arranged on the metal binding post. Four metal rings are arranged on the mounting seat, the metal rings are symmetrically distributed around the center of the mounting seat, and threads are formed in the metal rings. According to the new energy lithium battery binding post, the knurling groove is additionally formed in the metal binding post, and the knurling groove is in contact with the inner wall of the dustproof cap, so that the friction force between the metal binding post and the dustproof cap is increased, the dustproof cap is prevented from falling off, and the stability is improved.

The metallic bond thinning grinding wheel comprises a base body, a plurality of outer ring grinding wheel teeth are evenly distributed on the outer edge of the end face of the base body at intervals in the circumferential direction, and a plurality of inner ring grinding wheel teeth are evenly distributed on the outer edge of the end face of the base body at intervals in the circumferential direction. According to the grinding wheel tooth, a new formula is adopted, the friction performance is good, under the same machining condition, compared with a traditional grinding wheel, it can be guaranteed that stress borne by a machined part is reduced to the minimum, and therefore the defects of bending and microcracks caused by machining are avoided. The parameters of an existing grinding wheel machining product are as follows: the roughness Rz is less than or equal to 6 microns, the parallelism is less than or equal to 5 microns, the machining beat is 19s, and the service life is 1400P; the product machining parameters of the thinned grinding wheel are as follows: the roughness Rz is less than or equal to 2.6 microns, the parallelism is less than or equal to 2.5 microns, the machining beat is 12s, and the service life is 2800P.

[Problem] To directly bond a metal layer in a thin line shape to a surface of a ceramic substrate.[Solution] A method for producing a ceramic-metal bonded object including irradiating a surface of a ceramic substrate with a laser beam while sweeping the laser beam, and simultaneously therewith, feeding a solid metal material toward a region irradiated with the laser beam on the surface of the ceramic substrate (hereinafter referred to as “irradiation area”), so that the metal material being fed is also brought into a state of being irradiated with the laser beam to melt the metal material while heating the surface of the ceramic substrate located in the irradiation area, and depositing the molten metal material on the surface of the ceramic substrate and then solidifying the metal material.

The present invention relates to the field of bacterial protein engineering and protein fibers applicable as metal-binding bionanomaterials. More specifically, the present invention relates to engineered bacterial endospore appendage (Ena) proteins modified to contain metal-binding polypeptide (MBP) inserts providing for stable, flexible and robust protein assemblies with metal-binding activity. In particular, the invention relates to methods for designing Ena-fusion proteins capable of self-assembling into fibers, and for recombinant production of said self-assembling Ena-MBP fusion protein subunits, assemblies and fibers, ensuring a sustainable source of biological material for use in metal mineralization, metal sequestration, and metal-removal applications such as waste water treatment, water softening, or bioremediation.