23 results about "Aluminum coating" patented technology

The present application relates to titanium dioxide coating technical field, especially to a kind of titanium dioxide continuous flow general coating method and device, four reaction units are installed and connected from left to right in series, and the control of the installation and connection position of first metering pump, second metering pump, third metering pump, fourth metering pump, fifth metering pump, sixth metering pump is combined, so that the accurate control of material feeding position and feeding amount, in turn, titanium dioxide silicon film layer and aluminum film layer process are effectively controlled, and the control of the quality of silicon film layer, aluminum film layer coating in continuous flow process can be realized, the control of temperature and other process parameters in continuous flow reaction system is combined, silicon coating rate is promoted to reach 94% or more under 90-95 ℃, compared with gap method silicon coating rate 80.37%, about 14 percentage points are improved;Aluminum coating rate reaches 97% or more, compared with gap method aluminum coating rate 91.26%, about 6 percentage points are improved, improve titanium dioxide coating effect.

The application discloses a carbon dioxide assisted dehydrogenation catalyst and a preparation method thereof. The catalyst comprises a honeycomb matrix, a modified silicon-aluminum coating on the surface of the honeycomb matrix and a first active component Pt, and the coating contains a group VIB metal carbide. Characteristic peaks representing the group VIB metal carbide appear at positions of 36°, 42°, 61° and 74° in an XRD spectrum, and lattice shift occurs. The preparation method comprises the following steps: (1) dissolving a group VIB metal precursor and / or an auxiliary metal salt in water to obtain solution A; (2) mixing alumina powder, pseudo-boehmite, a surfactant, a silicon source and the solution A to obtain a slurry; (3) loading the slurry on the honeycomb matrix, drying and roasting to obtain a carrier; and (4) loading Pt on the carrier to obtain the catalyst. The catalyst has a double active center synergistic cooperation function, has a double function of activating carbon dioxide and alkane dissociation adsorption, and has a wide application prospect in the fields of selective oxidation, oxidative dehydrogenation and the like.

This invention relates to the field of battery materials technology, specifically to an alumina coating, its preparation method, and its application. The alumina coating includes a positive electrode coating slurry formed on the surface of a positive electrode and / or a negative electrode coating slurry formed on the surface of a negative electrode. The positive electrode coating slurry includes nano-alumina powder, a first solid electrolyte, a first film-forming aid, a first binder, a first dispersant, and a first solvent. The negative electrode coating slurry includes nano-alumina powder, a second solid electrolyte, a second film-forming aid, a second binder, a second dispersant, and a second solvent. The preparation method includes: providing positive / negative electrode sheets to be coated; preparing positive / negative electrode coating slurries of a preset viscosity; and applying the slurries to the electrode surface using an atomization spraying method to form an alumina coating. This invention significantly improves the adhesion between the coating and the electrode, interface uniformity, and ionic conductivity by combining differentiated positive and negative electrode formulations with a semi-dry atomization spraying process.

The invention relates to a method (1) for producing a piston (2) having a core body (3) and at least one support (4). In the method (1), the core body (3) and the at least one support (4) are interconnected via an intermetallic aluminum finishing layer. The invention also relates to a piston (2) produced in the method (1) and to a thermoacoustic heat pump comprising the piston (2).

This invention discloses a high-temperature resistant and antioxidant coating for electrolytic aluminum anodes and its preparation process, relating to the field of electrolytic aluminum coating technology. The coating comprises the following components by mass percentage: 40%-50% main aggregate phase, 20%-30% composite binder, 3%-8% functional additives, 2%-5% stabilizing and reinforcing phase, and 8%-12% solvent film-forming phase. The composite binder contains the reaction product of alkali metal silicates and organic modifiers. This invention utilizes the hydrogen bonding reaction between alkali metal silicates and organic modifiers to form an anti-aging, high-toughness modified binder matrix, significantly improving the room-temperature curing stability and high-temperature service life of the coating, solving the technical problem of easy aging and cracking in traditional water glass-based coatings. A homogenization process employing synergistic anchoring of functional additives and stabilizing and reinforcing phases constructs a dual protection mechanism in the coating: rare-earth catalytic oxidation inhibition and whisker bridging crack prevention. This achieves long-term dense protection of the coating under high-temperature oxidizing atmospheres without introducing harmful impurities that contaminate the electrolyte.

The present application relates to the technical field of metal corrosion and surface treatment, and particularly relates to a cold-patching composite material for pipeline online repair and reinforcement and a use method, the composite material is composed of cold-plated aluminum coating and glass fiber cloth, the cold-plated aluminum coating is composed of the following components in percentage by mass: 25-45% of composite aromatic polyisocyanate polymer, 15-25% of composite n-butyl acetate polymer, 20-30% of aluminum powder, 5-20% of thinning agent, and the rest is synthetic resin; during preparation of the composite material, one or more than three of spraying, brushing, and rolling can be used. The present application can be used for thickening forming of the metal surface of pipeline, component and other engineering equipment, and can also be used for updating and reducing the metal plate thinning of old equipment, so as to realize thickening of the metal plate thickness of the equipment. The formula is simple, the cost of each component is low, the preparation process of the composite material is simple and operable, and the composite material has the characteristics of high bonding force, pressure resistance and corrosion resistance.

The application provides a surface treatment method of a pull rivet assembly, which comprises the following steps: forming a zinc-aluminum coating on a pull rivet and a sleeve ring through a multiple film forming mode; wherein the material of the pull rivet is medium-carbon alloy structural steel, the material of the sleeve ring is low-carbon steel, the zinc content in the zinc-aluminum coating is 85%-95%, and the aluminum content in the zinc-aluminum coating is 5%-15%; and the zinc-aluminum coating is subjected to heat diffusion treatment to form an iron-zinc-aluminum alloy protective layer on the surface of the pull rivet and the sleeve ring. In the technical scheme, the zinc-aluminum coating is formed on the pull rivet and the sleeve ring through the multiple film forming mode, and the heat diffusion treatment mode is adopted, so that the zinc diffuses into the pull rivet and the sleeve ring, and the iron of the pull rivet and the sleeve ring diffuses into the zinc-aluminum coating, thereby forming the iron-zinc-aluminum alloy protective layer, improving the structural strength of the protective layer on the outer side of the pull rivet and the sleeve ring, improving the corrosion resistance, and improving the use effect of the pull rivet and the sleeve ring.

This invention relates to a lightweight carbon-based multilayer composite material, its preparation method, and its applications, belonging to the field of layered composite material technology. It solves at least one of the problems in existing multilayer thermal protection materials, such as poor mechanical properties leading to easy delamination, and the inability to simultaneously achieve optimal comprehensive performance (e.g., high-temperature reflectivity, thermal insulation, density). The lightweight carbon-based multilayer composite material of this invention has a multi-component alumina coating on one side. The shielding layer and the multi-component alumina coating exhibit excellent reflectivity and thermal stability. The multi-component alumina coating is thermally matched with the carbon-carbon panel layer and the carbon foam layer, reducing the delamination failure problem of the composite material. Through the synergistic effect between the layers, the composite material of this invention simultaneously achieves low density and resistance to delamination, excellent mechanical properties, high-temperature reflectivity, and thermal insulation performance.

The utility model belongs to tooling technical field, concretely relates to a front fog lamp reflector aluminizing frock, including base, the upper end fixedly connected with support plate of base, the inside of support plate is connected with screw rod through screw thread, fixedly connected with rotating block on screw rod, the outside rotationally connected with clamping plate of screw rod, clamping plate and base contact, the inside fixed sleeve of clamping plate has bearing, the inside fixed sleeve of the inner ring of bearing has screw rod, the inside of base is provided with anti -loosening mechanism. The utility model through design collection shell, handle, connecting groove, wheel column, wheel and card slot etc. component, remove collection shell and drive card slot and wheel etc. component to move to the specified position in base, further make the card block move to the card slot, further make collection shell etc. Component get limit, further make collection shell can collect the waste material produced by front fog lamp reflector, make the device convenient to use.

This invention discloses a platinum-aluminum protective coating on the surface of DD6 single-crystal superalloy and its preparation method, belonging to the field of high-temperature protective coating technology. The platinum-aluminum coating is formed on the surface of a DD6 nickel-based single-crystal superalloy substrate, consisting of an interdiffusion layer and an aluminized layer from the inside out. The preparation process includes: pretreating the DD6 alloy substrate; preparing a platinum layer with a thickness of 3-4 μm on the substrate surface using electroplating; performing a first vacuum heat treatment under a protective atmosphere to allow the platinum layer to interdiffused with the substrate to form a platinum-modified layer; then preparing an aluminized layer on the surface of the platinum-modified layer using a vapor-phase aluminizing method; and finally performing a second vacuum diffusion treatment under a protective atmosphere to obtain a dense coating. The platinum-aluminum coating prepared by this invention has strong adhesion to the substrate and a controllable microstructure, significantly improving the oxidation resistance of DD6 alloy under high-temperature oxidizing environments, and is suitable for the protection of high-temperature hot-end components such as turbine blades of aero-engines.

The utility model discloses a quartz crucible. The quartz crucible comprises a quartz crucible body and a coating arranged on the outer wall of the quartz crucible body, and the coating is an aluminum hydroxide coating or a diatomic aluminum oxide coating. The utility model discloses can effectively promote the thickness of the reduction of crystallization layer, improves the high temperature mechanical strength of quartz crucible, and prolongs the service life of crucible through setting aluminum hydroxide coating or diatomic aluminum oxide coating on the outer wall of quartz crucible body.

There is provided a novel Al wiring material that achieves both of a suppression of chip damage and a thermal shock resistance. In aspect 1, the Al wiring material includes an Al core material and an Al coating layer formed on a surface of the Al core material, and satisfies 1.2≤H1h / H1s where H1h is a Vickers hardness of the Al core material (Hv) and H1s is a Vickers hardness of the Al coating layer (Hv). In aspect 2, the Al wiring material includes an Al core material and an Al coating layer formed on a surface of the Al core material, and satisfies 1.2≤H2h / H2s where H2s is a Vickers hardness of the Al core material (Hv) and H2h is a Vickers hardness of the Al coating layer (Hv).

The application discloses a SiC fiber reinforced aluminum prepreg tape production system and a preparation method, and the production system comprises, in sequence along a fiber feeding direction of the SiC fiber, a fiber feeding device, a yarn separating device, a yarn spreading device, a preheating device, an aluminum coating device and a fiber collecting device; the fiber feeding device comprises a plurality of rotating shafts for loading SiC fiber coils and a tension control device arranged correspondingly behind each rotating shaft, and the SiC fiber in the SiC fiber coil is sent to the yarn separating device after the tension is adjusted by the tension control device. The production system can realize the preparation of a plurality of continuous SiC fiber reinforced aluminum prepreg tapes, can ensure the good infiltration and combination of the fiber and the matrix, can avoid the damage of a large area of the fiber, and can produce the prepreg tapes with a smooth surface, a regular cross section and uniform fiber distribution, and the prepreg tapes have the weaving property and can be used as raw materials to prepare SiC fiber reinforced aluminum matrix composite components by adopting a hot pressing method or an impregnation method.

The utility model relates to the technical field of paint delivery, disclose a paint delivery pipeline subassembly of zinc -aluminium coating production line, including feed pipe, the one end of feed pipe is provided with filter equipment, the filter equipment is used for filtering paint, the other end of filter equipment is provided with agitating unit, the agitating unit is used for making paint even, the filter equipment includes V -shaped tube, one end of V -shaped tube is linked with the one end of feed pipe, the bottom of V -shaped tube is provided with waste component, the inner wall of V -shaped tube is fixedly connected with fixed ring, the inner wall of fixed ring is rotatably connected with rotating component, one side of rotating component is provided with fixed component, in the utility model, filter the paint through the filter screen, intercept large particle, the filter screen rotates in the inner wall of fixed ring, the efficient use of filter screen, the filter screen is backflushed by nozzle, and the large particle blockage that falls along V -shaped tube to the lowest end and is discharged.

This invention relates to the field of electronic packaging materials technology, and discloses an aluminum-silicon coated diamond composite material and its preparation method. The composite material comprises diamond particles, a silicon carbide interface layer, and an aluminum coating layer; the silicon carbide interface layer consists of a carbon-rich buffer layer, a compositional transition layer, and a near-stoichiometric layer from the inside out; the silicon carbide interface layer is deposited on the surface of the diamond particles, and the carbon / silicon atomic ratio varies gradient along the thickness direction. This invention employs an inclined magnetron sputtering device, and by precisely controlling process parameters such as sputtering power, target ratio, and deposition time, a uniform, dense, and structurally controllable gradient silicon carbide interface layer is constructed on the surface of the diamond particles, effectively improving the interface stability and thermal conductivity of the composite material. Furthermore, the process is green and environmentally friendly, easy to scale up, and suitable for heat dissipation packaging of high-performance, high-power electronic devices.

This invention discloses a method for preparing steel-aluminum pipe joints using a combination of interfacial coating and differential temperature hot pressing, belonging to the field of metal layered composite material preparation technology. The method includes the following steps: seamless steel pipes and seamless aluminum pipes are separately immersed in molten aluminum; the resulting seamless steel pipes with aluminum coatings and seamless aluminum pipes with aluminum coatings are heated separately and then assembled under pressure, followed by heat treatment, cooling, and machining to obtain the finished steel-aluminum pipe joint. This invention achieves the connection between seamless steel pipes and seamless aluminum pipes, greatly improving material yield, reducing production costs, enhancing interfacial bonding strength and sealing performance, and is beneficial for large-scale industrial production.

This utility model relates to the technical field of zinc-aluminum coated workpiece fixtures, and discloses a workpiece positioning fixture produced by zinc-aluminum coating. The fixture includes a main block, a cooling mechanism on the top front side of the main block, and a clamping mechanism on the rear side of the main block for clamping. The clamping mechanism is fixedly connected to the bottom of the main block. The cooling mechanism includes a starter, the bottom of which is fixedly connected to the top front side of the main block. Transmission blocks are fixedly connected to the left and right ends of the front side of the starter, and a limit block is fixedly connected to the bottom of the outer wall of the transmission block. In this utility model, the starter drives a fan to operate via the transmission blocks, a cooling component delivers coolant, and a heat absorption component absorbs internal heat, effectively reducing the internal temperature of the equipment, ensuring stable operation of the fixture at high temperatures, and improving positioning accuracy and service life.

A modular composite panel system comprising a plurality of composite panels, each composite panel comprising co-cured layers including at least a carbon fiber layer and a resin between the carbon fiber layers, wherein each composite panel includes interlocking edge elements configured to mechanically connect with interlocking edge features of adjacent composite panels, and a hydrogen-impermeable bladder positioned within a structure formed by the plurality of composite panels when assembled, wherein the bladder is configured for hydrogen containment while the composite panels provide structural support. The composite panels may further include Kevlar layers co-cured with the carbon fiber layers and aluminum coatings applied to panel surfaces. The interlocking edge features may comprise dovetail connections, tongue-and-groove connections, or snap-fit mechanisms, and high-performance adhesives may be applied for bonding adjacent panels. The hydrogen-impermeable bladder may comprise thermoplastic polyurethane, multilayer polymer-metal laminates, or aluminum-coated films.

The invention discloses a composite surface treatment process for a transformer oil tank in a coastal region, and belongs to the technical field of transformer oil tank production and machining.The composite surface treatment process comprises the following steps that firstly, a zinc-aluminum coating is subjected to electric arc thermal spraying, an electric arc spraying system is adopted for spraying the transformer oil tank, and after spraying, coating finishing is conducted to form a metal coating; and 2, an electrophoretic coating procedure, wherein after the transformer oil tank obtained in the step 1 is pretreated, cathode electrophoresis is adopted for coating the transformer oil tank to form a paint film. A composite process of electric arc thermal spraying of the zinc-aluminum coating and the electrophoretic coating is adopted, the zinc-aluminum coating provides cathode protection, the electrophoretic coating provides a super-strong barrier, after the electrophoretic paint is permeated and cured, pores of the thermal spraying coating are thoroughly sealed, a compact and non-porous complete barrier is formed, the path that a medium permeates through the pores is fundamentally eradicated, and the service life of the coating is prolonged. And the protection service life of the transformer oil tank can be prolonged to more than 25-30 years.

This invention relates to the field of titanium dioxide coating technology, and more particularly to a continuous flow recoating method and apparatus for titanium dioxide. It employs four reaction units connected in series from left to right, and controls the installation and connection positions of the first, second, third, fourth, fifth, and sixth metering pumps to accurately control the material feed position and feed rate. This effectively controls the processes of coating silicon and aluminum layers onto the titanium dioxide, and enables control over the coating quality of the silicon and aluminum layers during continuous flow. Combined with the control of process parameters such as temperature within the continuous flow reaction system, it achieves a silicon coating rate of over 94% at 60-65℃, an improvement of approximately 14 percentage points compared to the 80.37% silicon coating rate of the intermittent method; and an aluminum coating rate of over 97%, an improvement of approximately 6 percentage points compared to the 91.26% aluminum coating rate of the intermittent method, thus improving the overall titanium dioxide coating effect.