93 results about "Diamond-like carbon" patented technology

According to the silicon carbide / diamond multi-layer composite film and the preparation method thereof, a polycrystalline silicon carbide matrix in the multi-layer composite film is a bottom layer, and the multi-layer composite film has high strength, high rigidity, high heat conductivity and oxidation resistance; the components of the gradient SiC-C transition layer gradually change from pure SiC to rich C-SiC and then to diamond-like carbon, and the gradient SiC-C transition layer is used for slowly releasing thermal stress and enhancing binding force; the nanocrystalline diamond is used as the top layer and has high hardness, low friction coefficient, particle scouring resistance and high infrared transmittance; the silicon carbide / diamond multi-layer composite film is obtained through a chemical vapor deposition method, the process is mature, and the silicon carbide / diamond multi-layer composite film has good heat conduction performance and infrared transmittance and is suitable for infrared guidance systems with extremely severe working environments, such as optical materials of fairings, optical windows and the like.

A thermal ablation-resistant, wear-resistant, and friction-reducing coated piston ring, a preparation method thereof and an engine are provided. An outer circumferential surface of a piston ring material matrix includes, from bottom to top, a wear-resistant and friction-reducing layer and a protective layer, and the protective layer is a single nitride layer or a multi-element nitride layer. The piston ring is arranged with the wear-resistant and friction-reducing layer and the protective layer from bottom to top. When the piston ring is installed in the engine, the high-temperature and high-pressure gas flow impacts the piston ring and contacts the protective layer on the surface of the piston ring, while the inner diamond-like carbon coating (DLC) functional layer is completely “encapsulated” and protected by the outer protective layer. The protective layer possesses higher ablation resistance compared to the DLC layer, effectively preventing phase transformation in the internal DLC layer.

A wiring substrate includes a core part including a glass plate and a through-hole conductor penetrating through the glass plate, and a build-up part formed on a surface of the glass plate of the core part and including conductor layers and insulating layers. The build-up part is formed such that the conductor layers include four or more conductor layers and that the insulating layers include four or more insulating layers, the core part includes a land and an adhesive film formed such that the land is formed on the surface of the glass plate and positioned on the through-hole conductor and that the adhesive film includes a diamond-like carbon film and is covering a surface of the land and the surface of the glass plate not covered by the land.

The utility model discloses a kind of shaft structures for fatigue-resistant circuit breaker, including output shaft main body, the output shaft main body outside is provided with reinforcing component, the reinforcing component includes the coating one being arranged in the output shaft main body outside, the coating one is made of Ni60A+WC composite material, the coating one outside is provided with coating two, the coating two is made of diamond-like carbon material, the output shaft main body outside is provided with several reinforcing bands, the reinforcing band is prepared using TiN material, the output shaft main body middle position is provided with through hole, the through hole inside is fixedly connected with support frame, the output shaft main body and support frame are made using 17-4PH stainless steel material, the coating one thickness is 80-120 μm, the utility model is provided with reinforcing component, can greatly improve the overall strength of output shaft main body, effectively avoid the emergence of damage due to use time increase, beneficial to increase the service life of output shaft.

The method comprises the following steps: forming a diamond-like carbon film on a substrate; and treating the diamond-like carbon film in a vacuum chamber, wherein the treatment comprises the following steps: spraying a silicon dioxide solution on the surface of the diamond-like carbon film, and annealing the diamond-like carbon film. According to the method, the ductility of the diamond-like carbon film can be simply and efficiently improved at low cost, and the high hardness and high wear resistance of the diamond-like carbon film are not damaged, so that the application range of the diamond-like carbon film is expanded.

The invention belongs to the technical field of chains, and particularly relates to a precise chain roller with a smooth surface and abrasion resistance and a preparation method thereof. The invention provides a steel roller which is provided with a DLC final working surface on an excircle mirror surface, an excircle has no texture, and only an inner hole is provided with a micron-sized spiral microgroove. The process is implemented according to the sequence of carburizing / quenching / tempering-shot blasting-fine grinding-superfinishing-vacuum PVD, a diamond-like carbon composite coating is formed on an outer circle, and oil storage and capillary pumping are carried out through control of an outer edge fillet, residual compressive stress and DLC adhesive force and an inner hole microgroove, so that work division of antifriction bearing and oil supply functions is realized. A chain provided with the anti-abrasion precision roller with the smooth surface gives consideration to low friction, low noise and stripping resistance under the boundary lubrication and impact-rolling composite working conditions.

The present disclosure provides a screw rod and a screw rod nut assembly, the screw rod comprising: a screw rod body, the screw rod body comprising a threaded section, an outer surface of the threaded section sequentially provided from inside to outside with: a metal chromium base bonding layer, a tungsten carbide hardness support layer, and a DLC functional layer, the DLC functional layer being a diamond-like carbon coating layer; wherein a total thickness T1 of the metal chromium base bonding layer and the tungsten carbide hardness support layer is not less than 0.5 microns, and a thickness T2 of the DLC functional layer is not less than 1.5 microns. The screw rod nut assembly of the present disclosure comprises the above-mentioned screw rod.

The invention discloses a treatment method of a DLC film, which comprises the following steps: covering a to-be-protected area on the surface of an original DLC film by using a resin adhesive, the to-be-protected area being other areas on the surface of the original DLC film except the to-be-treated area; after the resin adhesive in the to-be-protected area is cured, the original DLC film is placed in a vacuum chamber; the original DLC film is heated to a preset temperature in the vacuum chamber, and meanwhile an external electric field is applied to the original DLC film; and after a preset time, converting the carbon element in the to-be-treated region into a graphite structure by utilizing the electron migration characteristic of the carbon element. By adopting the technical scheme provided by the invention, part of carbon elements in the DLC film can be converted into a graphite structure, and the method has the advantages of low energy consumption, low cost, short treatment time, simple process and the like.

The utility model discloses an anti-corrosion and wear-resistant bearing, and relates to the technical field of bearings. The bearing comprises an outer ring, an inner ring assembly is arranged in an inner cavity of the outer ring, a retainer is arranged between the inner ring assembly and the outer ring, and a rolling body is arranged in an inner cavity of the retainer; the inner ring assembly comprises a first connecting sleeve, and a second connecting sleeve is clamped in an inner cavity of the first connecting sleeve. According to the sealing design of the inner ring assembly, through the first connecting sleeve, the second connecting sleeve, the sealing ring and the sealing plate which are connected in a clamped mode, external impurities are effectively prevented from invading, a good working environment is built for the interior of the bearing, and a strength foundation is laid for base-layer high-carbon-chromium bearing steel; the carburized bearing steel and martensitic stainless steel of the reinforcing layer are combined to improve the strength and hardness, the chemical nickel-plated phosphorus alloy and the diamond-like carbon coating of the functional layer endow the bearing with excellent corrosion resistance and wear resistance respectively, and the adaptive capacity of the bearing under complex and severe working conditions is comprehensively improved.

An end effector for a substrate handling device suitable for a semiconductor fabrication tool. The end effector is adapted to support the substrate and is connectable to a robotic arm. The end effector includes: (a) a body having a top surface and a bottom surface; and (b) at least one supporting projection protruding from the top surface of the body for contacting and supporting the substrate. The supporting projection is provided with a diamond-like carbon coating.

The invention provides a lubricating grease-diamond-like carbon film composite lubricating material as well as a preparation method and application thereof, and belongs to the technical field of lubricating materials. The lubricating grease-diamond-like carbon film composite lubricating material comprises a composite diamond-like carbon film and lubricating grease arranged on the surface of the composite diamond-like carbon film. On one hand, the structure of the composite diamond-like carbon film is regulated and controlled, a gradient content structure with the Cr mass content gradually decreased and the amorphous carbon mass content gradually increased is formed in the thickness direction, the binding force of the diamond-like carbon film and a friction pair substrate can be improved, and meanwhile the amorphous carbon content of the friction surface layer is increased; lubricating grease is arranged on the surface of the diamond-like carbon film, additives in the lubricating grease can form a three-dimensional network structure through non-covalent interaction, efficient capture of base oil is achieved, creeping and volatilization of a liquid lubricant are effectively avoided, the service life is long, and pollution is avoided.

The invention discloses a match-grinding-free quick forming process for a valve element and a valve sleeve of a servo valve, and relates to the technical field of servo valve machining and forming. Step 2, material inspection; step 3, surface treatment; step 4, ultrasonic cleaning; step 5, clamping the part; step 6, vacuumizing; seventhly, argon ion bombardment cleaning is conducted; 8, depositing a chromium base layer; 9, depositing a gradient chromium carbide transition layer; 10, depositing a hydrogenated diamond-like carbon top layer; and eleventhly, cooling and discharging are conducted. According to the match-grinding-free quick forming process for the valve element and the valve sleeve of the servo valve, the machining period of a sliding valve assembly can be shortened by 30%, the material cost is reduced by 80%, and the interchangeability of the valve sleeve and the valve element in the sliding valve assembly is achieved.

The invention discloses a cushion block composite layer for a semiconductor, a preparation method and a cushion block, the cushion block composite layer sequentially comprises a composite coating and a surface microstructure from a substrate close to beryllium copper to a position far away from the substrate, and the composite coating sequentially comprises a chromium transition layer, an alpha-diamond-like carbon layer and a self-lubricating layer doped with tungsten disulfide from a position close to the substrate to a position far away from the substrate. Hard metal carbide reinforced phase crystal grains are uniformly distributed in the alpha-diamond-like carbon layer; the surface micro-texture comprises a plurality of pits, and each pit is filled with a nano-particle solid lubricant; through the structure, the cushion block is compatible with the high process temperature, an additional cooling device is not needed, and the interface shear stress of the composite layer is reduced, so that the copper powder falling amount is greatly reduced, the hardness, the wear-resisting life, the wear-resisting particle penetrability and the high recognition accuracy of the cushion block are greatly improved, and the low friction coefficient of the surface is maintained; and the roughness is still kept at a lower level after the lead frame is carried for multiple times.

The embodiments of this disclosure generally relate to the fabrication of integrated circuits. More specifically, the embodiments described herein provide techniques for depositing nitrogen-doped diamond-like carbon films for patterning applications. In one or more embodiments, a method for processing a substrate includes: flowing a deposition gas containing a hydrocarbon compound and a nitrogen dopant compound into a processing volume of a process chamber on which the substrate is positioned on an electrostatic chuck; and generating plasma at or above the substrate by applying a first RF bias voltage to the electrostatic chuck to deposit a nitrogen-doped diamond-like carbon film on the substrate. The nitrogen-doped diamond-like carbon film has a density greater than 1.5 g / cc and a compressive stress of about -20 MPa to less than -600 MPa.

The present invention relates to a carbon coating method for a rubber roller, in which a DLC (Diamond-Like Carbon) coating is applied to the surface of the rubber roller using an ion source. In order to prevent problems such as surface cracks caused by heat and ultraviolet radiation generated during the plasma-based coating process, the method controls the coating cycle by distributing the coating time and aging time (also referred to as cooling time) into a single unit coating cycle.

The method for processing a plastic substrate according to the present invention includes: cleaning the plastic substrate; sputtering to form a metal film on the plastic substrate; subjecting the plastic substrate to plasma bombardment and etching; and depositing a diamond-like carbon layer on the metal film. This method is simple, efficient, and low-cost, and can form a low-stress diamond-like carbon layer on the plastic substrate, thereby reducing surface stress on the plastic substrate, preventing curling and deformation, and improving its performance.

The invention relates to a design method of a diamond-like carbon wear-resistant coating for a zirconium alloy component of a nuclear reactor, which comprises the following steps: establishing a fretting wear prediction model of the zirconium alloy component in a nuclear reactor environment, and calibrating the model based on experimental data to simulate flow-induced vibration and contact stress distribution; the performance parameters of the diamond-like carbon coating are designed through an optimization algorithm by utilizing model output and combining friction coefficient and wear rate data; based on the design parameters, simulating and optimizing the coating preparation process through a process simulation model, so that the coating is firmly combined with the substrate; and finally, verifying the long-term wear performance of the coating through experiments to finish design verification. Compared with the prior art, through the systematic design process, the fretting wear resistance of the coating is remarkably improved, the problem that zirconium alloy parts are worn due to flow-induced vibration is effectively solved, the service life of the parts is prolonged, and the operation safety of a nuclear reactor is guaranteed.

A method to refurbish electrostatic chucks includes identifying one or more layers on a minimal contact area (MCA) pad affixed to an electrostatic chuck, configuring a laser ablation system to remove the identified layers, ablating the identified layers with a controlled laser beam from the laser ablation system, identifying one or more deposited metals on the electrostatic chuck, and ablating the identified deposited metals with the laser beam. In another aspect, the MCA pad may include a diamond like carbon layer and a Ti-TiN layer. The laser ablation process removes the layers and deposited metals on an electrostatic chuck in a manner that is performed faster, with a lower cost, and without the use of a multistep chemical process compared to conventional chemical stripping methods.

The utility model discloses a lithium battery cell pole piece slitting knife, and belongs to the technical field of lithium battery slitting. The lithium battery cell pole piece slitting knife comprises a blade body and a cutting edge structure, the annular cutting edge structure is arranged on the outer ring of the blade body, the surfaces of the blade body and the cutting edge structure are coated with diamond-like carbon coatings, the blade body and the cutting edge structure comprise a main cutting edge and an auxiliary sleeking edge, and the main cutting edge and the auxiliary sleeking edge are in transition connection through an arc. According to the lithium battery cell pole piece slitting knife, the stepped cutting edge design of the main cutting edge and the auxiliary sleeking edge is adopted, segmented cutting is achieved, burrs are reduced, the flatness of a notch is improved, adhesion of a battery cell pole piece material is avoided through the diamond-like carbon coating, it is ensured that the slitting edge is smooth, meanwhile, the miniature heat conduction pipe and the heat dissipation groove are combined for heat dissipation, and the service life of the lithium battery cell pole piece slitting knife is prolonged. Efficient heat dissipation is achieved for the cutting edge structure, convection is enhanced through the heat dissipation micropores, passivation of the cutting edge structure caused by thermal deformation is prevented, and friction heat is reduced through the abrasion-resistant protruding points.

A digital microfluidic (DMF) system based on an electrowetting-on-dielectric mechanism includes a substrate, and at least one dielectric layer comprising diamond-like carbon over the substrate. The DMF system also includes a plurality of electrodes connected to the dielectric layer. A voltage source is selectively couplable to different electrodes of the plurality of electrodes.

The utility model relates to the technical field of diffusion films, and discloses a scratch-resistant wear-resistant quantum dot diffusion film which comprises a protective layer, a transition layer is fixedly connected to the lower end of the protective layer, a diffusion composite layer is fixedly connected to the lower end of the transition layer, and a substrate layer is fixedly connected to the lower end of the diffusion composite layer. According to the utility model, the diamond-like carbon coating on the surface of the protective layer is used for providing protection for the surface of the membrane material and is matched with the substrate layer and the transition layer which are made of enhanced PET (Polyethylene Terephthalate) materials to provide certain absorption for the internal stress or external impact of the structure, so that the aim of providing stable protection for the subsequent use of the membrane material is fulfilled; the subsequent membrane material is prevented from being damaged due to external scraping or impact, so that the service life of the membrane material is prolonged, the subsequent maintenance cost is further reduced, and the overall practicability of the membrane material is improved.

The invention relates to the technical field of functional films, and discloses a composite functional film with high light transmission and UV (ultraviolet) filtering property, which sequentially comprises a base material layer, a bonding layer, a dual-mechanism UV filtering functional layer, a superhard layer and a surface functional layer from bottom to top, the bonding layer is a Cr or Ti layer; the dual-mechanism UV filtering functional layer comprises a disordered multilayer dielectric film and a plasma resonance enhanced absorption layer; the superhard layer is of a three-dimensional interpenetrating network structure formed by a diamond-like carbon phase and hexagonal boron nitride nanosheets; the surface functional layer is a photocatalytic surface functional layer, and the photocatalytic surface functional layer is a TiO2 / SiO2 composite material with a micro-nano hierarchical porous structure. The composite functional film provided by the invention realizes high UV barrier and high light transmission balance, improves the mechanical durability of the film body, and is applicable to multiple scenes.

The invention belongs to the technical field of mechanical part surface treatment, and relates to a gear ring coating, a preparation method and an internal gear pump. The invention provides a vacuum coating plating technology and a preparation method for an interface of a gear ring shell of an internal gear pump, the technology adopts a multilayer composite structure design, the multilayer composite structure design comprises a metal bottom layer, a nitride transition layer and a diamond-like carbon functional layer, and through material combination and structure optimization, the composite structure is prepared. And the wear resistance, the corrosion resistance and the bonding strength are synergistically improved. In the process aspect, the procedures of precise cleaning, ion bombardment activation, vacuum coating, low-temperature annealing and the like are adopted, parameters of all links are strictly controlled, and it is ensured that the coating quality is stable and reliable. The prepared coating is excellent in comprehensive performance, the problems of abrasion and corrosion under high-pressure and high-speed working conditions can be effectively solved, the service life of the gear pump is prolonged, and the maintenance cost is reduced.

A method of coating an internal surface of a tubular member includes: forming a sublayer on the internal surface of the tubular member, the sublayer including a chromium sublayer, a polymer sublayer containing electrically conductive or semi-conductive particles, or a diamond-like carbon sublayer containing an undoped diamond-like carbon material; disposing a hydrophobic layer on the sublayer via a plasma-assisted chemical deposition thereby forming the coating on the internal surface of the tubular member, the hydrophobic layer including a doped diamond-like carbon material, and the doped diamond-like carbon material containing an amorphous diamond-like carbon doped with Si and optionally at least one of F, Co, Cr, W, or Ti.

The present disclosure provides a metal material for medical devices, the metal material for medical devices having: a metal layer; and a diamond-like carbon layer containing fluorine and silicon provided on the metal layer.

The present application provides a kind of light wear-resistant bacteriostatic medical coating, including titanium transition layer, and diamond-like carbon film layer in the surface of titanium transition layer, silver and copper are contained in the diamond-like carbon film layer;And the preparation method of light wear-resistant bacteriostatic medical coating, including S1: raw material preparation and pretreatment;S2: Ar ion etching;S3: Ti transition layer deposition;S4: Ag, Cu co-doped deposition;S5: cooling, breaking vacuum.This technical solution has broad-spectrum bacteriostatic effect, and high bacteriostatic rate, reaches high-efficiency sterilization under lower total metal content, reduces endoscope related cross infection problem;Meanwhile, the coating has strong chemical inertness, dense structure without pore, resists multiple disinfection methods, titanium transition layer and silver copper doped structure do not dissolve, do not fail, avoid the problem that traditional antibacterial coating rapidly degrades, fails, falls off after repeated disinfection, meanwhile, the corrosion of disinfection medium to internal metal matrix is isolated, the performance of instrument is stable.

The invention relates to a metal part comprising a metallic substrate (S) having an outer surface coated with a layer of carbon-based material (M). According to the invention, the layer of carbon-based material: —is of “DLC” amorphous carbon type, from the a-C family; • comprises less than 3 at % of oxygen within the layer of carbon-based material; • does not contain hydrogen, nitrogen, or doping elements.

The acrylic lens comprises a lens substrate, an aspheric optical structure formed on at least one optical surface of the lens substrate, and a hard coating, a multi-layer antireflection film and an antifouling layer which are sequentially laminated and compounded on the surface of the aspheric optical structure, the lens matrix is formed by a copolymer of methyl methacrylate and a high-refractive-index aromatic monomer, inorganic nanoparticles with the surfaces modified by a silane coupling agent are uniformly dispersed in the copolymer, the particle size of the inorganic nanoparticles is 5-20 nm, and the content of the inorganic nanoparticles accounts for 1%-5% of the total mass of the lens matrix; and the hard coating is a diamond-like carbon-based film formed by a plasma enhanced chemical vapor deposition method. According to the acrylic lens, structures such as aromatic rings are introduced into a lens matrix, so that the intrinsic refractive index of a material is improved, the thicknesses of the center and the edge of the lens are reduced under the same diopter, and the thinness and the light weight of the lens are realized.

The present invention relates to a metallic bipolar plate comprising a metal substrate and at least one layer of a non-hydrogenated transition metal-doped diamond-like carbon (DLC) provided on the metal substrate, wherein the non-hydrogenated DLC comprises at least one transition metal selected from groups 4d, 5d and 6d of the periodic table of elements and a part of the at least one transition metal is present in the form of carbide of the at least one transition metal in the non-hydrogenated DLC as a matrix. The non-hydrogenated transition metal-doped DLC has an indentation hardness of ≥35 GPa, preferably of ≥40 GPa. The metal-doped DLC used as a coating of metallic bipolar plates in fuel cells and electrolyzers exhibits high corrosion resistance and low interface contact resistance even for longer lifetimes (>10,000 hours) and harsh operational conditions. Therefore, the present invention also pertains to such uses, and also to fuel cells, in particular proton exchange membrane fuel cells, and electrolyzers comprising such coated metallic bipolar plates. Further, the present invention provides a cathodic arc discharge deposition method for depositing a coating of non-hydrogenated DLC comprising at least one of the above-mentioned transition metals, which is preferably the non-hydrogenated transition metal-doped DLC.

To provide a differential device capable of improving lubricity of a sliding part and stabilizing differential limiting characteristics.SOLUTION: A differential device includes a differential case that is rotatably disposed, a pinion gear that is rotatably supported in the differential case and revolves by rotation of the differential case, a pair of side gears that mesh with the pinion gear and are relatively rotatable, and a differential limiting portion that limits a differential between the differential case and the side gears. The differential limiting portion includes two sliding portions 2939 and that are slidable with respect to each other. At least one of the two sliding portions 2939 and has the nitride layer 47 including the porous 45 formed on the surface of the base material 43 and the diamond-like carbon layer 49 formed on the surface of the nitride layer 47.SELECTED DRAWING: Figure 2