31 results about "Silumin" patented technology

The application relates to a high-wind-resistance high-strength aluminum alloy overhead insulated cable and a manufacturing method thereof, and belongs to the technical field of overhead power transmission and distribution. A high-strength aluminum alloy conductor (1) is extruded and coated with a silane cross-linked inner shielding layer (2), the silane cross-linked inner shielding layer (2) is extruded and coated with a silane cross-linked polyethylene insulation layer (3), the surface of the silane cross-linked polyethylene insulation layer is formed with uniformly distributed spherical pits, and a spherical pit structure (4) is formed; the spherical pit is a simulated golf ball type pit, and a plurality of spherical pits are arranged in a circular array on the surface of the insulation layer. The application has the advantages of simple and efficient structure and high practical application value, the wind resistance of the application is greatly improved compared with conventional overhead insulated cables, the application reduces the breakage of lines, vibration aging and other faults caused by extreme weather such as strong wind during line operation, ensures the safe and stable operation of lines, and guarantees the stable power supply for people's livelihood, industry, breeding and economic development in coastal wind areas, mountain wind areas and other areas prone to strong wind disasters.

The utility model discloses a kind of tensile composite cable in the technical field of cable, and cable is composed of torsion-resistant combination core, conductor, nanometer composite insulation layer, shielding structure layer and protective sleeve. Torsion-resistant combination core is woven by high-carbon steel wire, glass fiber and kevlar fiber according to 1:1:1 proportion three-dimensionally, provides high strength and torsion resistance ability;Conductor is high-strength aluminum alloy wire with conductive ceramic coating on surface, is double helix winding outside torsion-resistant combination core, enhances flexibility and tensile property;Nanometer composite insulation layer is composed of nanometer silicon dioxide, nanometer aluminum oxide and high-molecular polymer base material, is equipped with tiny air passage inside, improves insulation performance and heat dissipation effect;Shielding structure layer includes tinned copper wire braiding shielding layer and aluminum-plastic composite film shielding layer, and the two are connected closely by conductive glue, effectively shield electromagnetic interference. Overall design significantly improves the tensile, torsion resistance, environmental resistance and shielding level of cable, meets the use demand under complex environment.

The application relates to the technical field of cables, and discloses a high-strength aluminum alloy medium-voltage power cable. The high-strength aluminum alloy medium-voltage power cable comprises, from inside to outside, an aluminum alloy conductor and an insulation layer; the insulation layer is a cross-linked polyethylene nano-composite insulation material, and the raw material components of the cross-linked polyethylene nano-composite insulation material comprise, in terms of weight fractions, 100 parts of a base resin, 3-8 parts of core-shell-star compounded inorganic nano-filler, 0.5-1 part of an antioxidant and 1.5-2.5 parts of a cross-linking agent; the core-shell-star compounded inorganic nano-filler is silica-coated nano-aluminum nitride grafted with polyhedral oligomeric silsesquioxane, and is denoted as AlN@SiO2-POSS. In the application, the inorganic nano-composite filler is used to improve the thermal conductivity of the cable insulation layer, and meanwhile, the dielectric strength, mechanical tensile property and heat aging resistance of the cable are improved.

The utility model relates to the technical field of toys, and disclose a kind of high-strength aluminum alloy framework for robot cat, including body and base, the bottom of body is fixedly connected with base, the top of body is fixedly connected with skull, the inside of skull is hollowed out and is arranged, the both sides of body are provided with arm rest, the inside of body is provided with driving part, the driving part includes the connecting shaft of setting in the inner wall of body, connecting component, setting in the one side of arm rest, the connecting component includes the connecting seat fixed in the one end of arm rest, the inner wall of connecting seat is equipped with two locating holes, two the locating holes are symmetrically arranged;The utility model is made of high-strength aluminum alloy robot cat framework, with the advantages of small density and high strength, improves the support strength of framework and reduces the structure weight, and through setting connecting component, arm rest can be conveniently disassembled and replaced, convenient operation.

This utility model relates to the field of wheel rim technology, specifically a lightweight, high-strength integrated wheel rim for motorcycles. It includes a one-piece molded rim, several Y-shaped spokes arranged in a circular array, and a hub mounting base. Several spoke connecting portions are evenly distributed along the circumferential direction on the inner side of the rim. The advantages of this utility model are: the hub mounting base is made of high-strength aluminum alloy, and the second stiffening plates within the annular grooves at both ends are integrally molded with the hub mounting base, reducing the weight of the hub while increasing structural strength. The combination of a magnesium alloy rim, carbon fiber reinforced composite Y-shaped spokes, and a high-strength aluminum alloy hub mounting base, through the rational combination of different lightweight, high-strength materials, achieves overall weight reduction while avoiding a decrease in strength; the weight-reducing grooves and strip grooves reduce material usage, while the first and second stiffening plates respectively reinforce the spokes and hub mounting base, effectively solving the problem of simultaneously achieving lightweight and high strength in existing wheel rims.

This utility model discloses a high-strength aluminum alloy inner disc connection structure, which includes a brake disc body. A first connecting ring is disposed on the inner side of the brake disc body, and a second connecting ring is disposed on the inner side of the first connecting ring. A locking post is disposed between the first and second connecting rings. A first connecting block and a second connecting block are symmetrically disposed on both sides of the locking post. Through this structure, the first and second connecting rings are connected between the brake disc bodies via the first and second connecting blocks. The first and second connecting blocks are connected and locked by the locking post, a limiting cap, a first thread, and a second thread, facilitating quick and easy fastening of the aluminum alloy inner disc.

A portable tool holder for machining diesel engine bases includes a folding frame, modular tool slots, a dust protection system, and a mobile transport system. The main frame is made of high-strength aluminum alloy and features a multi-layer tray structure when unfolded via retractable support columns and a folding base, reducing its volume to one-third when folded. The modular tool slots are equipped with elastic silicone pads to accommodate tools of different diameters and include specification labels. A transparent dust cover is mounted on the top, and ventilation holes are provided on both sides. The base integrates casters and a telescopic rod for easy movement. This invention solves the problems of poor portability, insufficient safety, and low space utilization in traditional tool storage methods. It offers advantages such as categorized storage, rapid retrieval, safety protection, and flexible movement, making it particularly suitable for tool management in the machining of large workpieces. Practical application verification shows that it can improve tool retrieval efficiency by 40%, reduce tool damage rate by 60%, and significantly improve work efficiency on the machining site.

The present application belongs to the technical field of metal material processing, and relates to a densification process for spray forming high-strength aluminum alloy. After large deformation densification treatment of the spray forming ingot, subsequent solid solution treatment and aging treatment are carried out. The hot and force coupling is used to close the pores through plastic deformation and diffusion. The semi-finished product with excellent structure and density is obtained through large extrusion ratio or large deformation forging, the advantages of rapid solidification of spray forming are retained, the material is further strengthened and toughened through thermal mechanical treatment, the cost is reduced, the grain is refined, the comprehensive mechanical properties are improved, the internal loose defects of the high-strength aluminum alloy ingot prepared by spray forming are reduced, and finally the aluminum alloy material with tensile strength > 800 MPa and density > 99% is obtained. The applicable alloy composition is as follows: Cu 1.4-1.8%, Mg 2.2-2.6%, Zn 10.0-12.0%, Mn 0.02-0.05%, Zr 0.10-0.20%, Ti 0.02-0.05%, impurity element Si <= 0.10%, Fe <= 0.12%, other impurities <= 0.05% in total, <= 0.15% in total, and the balance is Al.

The application belongs to the field of medical protection equipment, and discloses a comprehensive ray protection device and a mechanical comprehensive performance simulation analysis method thereof. The comprehensive ray protection device comprises a radiation-proof acrylic plate, a support frame, a radiation-proof door, a radiation-proof curtain, a radiation-proof sleeve, radiation-proof rubber and a lead plate. The support frame is composed of high-strength aluminum alloy profiles of edges of the protection device, profiles fixed on the top plane of the protection device and profiles in the middle of the protection device. The profiles in the middle are matched with the radiation-proof acrylic plate fixing strips to fix the radiation-proof acrylic plate. The profiles fixed on the top plane of the protection device are used to improve the stability of the support frame. The upper surface of the profiles in the middle is fixed with the lower surface of the radiation-proof acrylic plate fixing strips. A groove is formed on the upper surface of the radiation-proof acrylic plate fixing strips to put the radiation-proof rubber and the radiation-proof acrylic plate. The application is optimized or specified in stress simulation analysis, so that continuous and real stress distribution and deformation conditions are obtained in the simulation loading process, and the convergence is improved.

The application relates to the technical field of die casting, in particular to an automobile high-strength aluminum alloy extrusion and die casting integrated machine. The automobile high-strength aluminum alloy extrusion and die casting integrated machine comprises a machine base, a fixed die plate fixedly installed on the machine base, a movable die plate slidably installed on the machine base, a hydraulic mechanism arranged on one side of the machine base, a die casting system arranged on one side of the fixed die plate and an extrusion system arranged at the bottom of the fixed die plate, the die casting system comprises a pouring gate formed in the outer wall of the fixed die plate, a material conveying channel formed in the inner part of the fixed die plate and communicated with the pouring gate, a second material feeding cylinder provided with a through slot and arranged on the fixed die plate and a pressing punch slidably installed in the second material feeding cylinder, and an adjusting part for adjusting the size of the section of the pouring gate is further arranged at the pouring gate. The die casting system and the extrusion system are integrated on the same machine base, and the precise automatic control of oil path switching is realized by using the control valve in the hydraulic mechanism.

This utility model relates to the field of fuel pipe processing, and more particularly to a stamping and forming device for high-strength aluminum alloy fuel pipes. It includes a base plate, a fixed frame, an electric push rod, an upper clamp, a lower clamp, and a fixed plate. The fixed frame is connected to the rear right side of the base plate, and the electric push rod is connected to the upper part of the fixed frame. The electric push rod and the processor are electrically connected via a control module. The upper clamp is connected to the telescopic end of the electric push rod, the lower clamp is connected to the upper right side of the base plate, and the fixed plate is connected to the upper left side of the base plate. This utility model uses a sliding table to move the expanding head, which in turn moves the extrusion rod to extrude and compress the sliding frame, causing lubricating oil to flow out and lubricate the expanding head. The expanding head continues to move, stamping and expanding the fuel pipe. This allows the sliding frame to expel lubricating oil while simultaneously moving the expanding head to stamp and expand the fuel pipe, reducing friction and wear, extending service life, preventing fuel pipe damage, and improving processing quality.

This utility model discloses a walking speed reducer, composed of three reduction mechanisms: AGV walking speed reducer A, AGV walking speed reducer B, and an intermediate speed reducer, which achieve synchronized movement through connecting rods. The core intermediate speed reducer uses a combination of cylindrical gears and spiral bevel gears for transmission. The meshing of the bevel gears and spiral bevel gears achieves the conversion of transmission direction, avoiding interference. It is made of high-strength aluminum alloy to achieve lightweight construction, and its modular design supports flexible assembly and disassembly. This speed reducer is driven by a single power source, ensuring the synchronization of AGV walking and lifting movements. It has advantages such as small size, high strength, and good synchronization, and is suitable for the transmission system of automatic loading and unloading AGV trolleys.

The utility model relates to the field of motorcycles, in particular to an anti-deformation motorcycle yoke plate which comprises a yoke plate body used for a motorcycle steering system. The reinforcing ribs are fixedly arranged on the upper side and the lower side of the yoke plate body respectively. According to the anti-deformation motorcycle yoke plate, the yoke plate body, the reinforcing ribs, the first mounting holes, the reinforcing columns, the second mounting holes, the first reinforcing sleeves and the second reinforcing sleeves are arranged, the reinforcing ribs are arranged between the upper side and the lower side in the yoke plate body, and the reinforcing ribs are distributed in a V shape, so that the strength of the whole yoke plate body is enhanced; meanwhile, the yoke plate body is made of high-strength aluminum alloy such as 7075 aluminum alloy, the material has high strength and low density, meanwhile, the first mounting hole and the second mounting hole are prone to deformation due to external force, the external strength is improved through the reinforcing columns on the two sides of the first mounting hole, and the service life of the yoke plate is prolonged. And a first reinforcing sleeve is arranged outside the second mounting hole in a sleeving manner and is spliced with a second reinforcing sleeve, so that the external strength of the second mounting hole is improved.

This invention relates to the field of overhead power transmission conductor technology, and in particular to a tenon-and-mortise interlocking ultra-high strength aluminum alloy steel core conductor and its preparation method. The conductor comprises an ultra-high strength steel core and an outer ultra-high strength aluminum alloy conductive layer. The ultra-high strength steel core is a G3A grade galvanized steel core, and the ultra-high strength aluminum alloy conductive layer is composed of 3-4 layers of S / Z type tenon-and-mortise interlocking wires concentrically stranded. The S / Z type tenon-and-mortise interlocking wires are a single-layer, single-wire concave-convex interlocking structure. This invention optimizes the Mg-Si-Zr-RE-B multi-element alloy composition system, achieving a Mg to Si mass ratio of 1.0-1.4, and combines this with a "solution-cold drawing-double-stage aging" process. This maintains high conductivity while increasing tensile strength to ≥360MPa, achieving an excellent match of high strength and high conductivity, and significantly improving strength while ensuring unchanged conductivity.

This invention relates to a high-strength ZLGQ104 aluminum alloy, its preparation method, and its applications. The high-strength ZLGQ104 aluminum alloy has the following composition by mass percentage: Si: 7.0%~10%, Cu: 2.0%~4.0%, Mg: 0.1%~0.4%, Fe≤0.9%, Mn≤0.5%, Zn≤1.0%, Ti≤0.2%, Ni≤0.3%, Al: balance. The high-strength ZLGQ104 aluminum alloy prepared by this invention has a tensile strength ≥195MPa, elongation ≥2.0%, and hardness ≥70HB, exhibiting excellent performance. It is particularly suitable for manufacturing key automotive components requiring higher strength, heat resistance, wear resistance, and surface quality, such as automotive engine cylinder heads and intake manifolds, thus contributing to the lightweighting and performance upgrades of automotive parts.

This invention belongs to the field of insulated conductor technology, specifically relating to lightweight, high-strength overhead insulated conductors. The invention uses kH-550 modified fumed silica, which is then reacted with hexachlorocyclotriphosphazene to prepare an insulating and flame-retardant filler. Fumed silica possesses excellent reinforcing insulation properties. The phosphazene ring coating improves the compatibility of the filler with the cross-linked polyethylene matrix, thereby enhancing the strength and toughness of the cross-linked polyethylene mixture. Low-density polyethylene (LDPE) is the main component in the cross-linked polyethylene mixture, providing excellent electrical insulation and processability. The introduction of ethylene-vinyl acetate copolymer improves the flexibility and weather resistance of LPE. This invention uses a high-strength aluminum alloy core as the main component to bear mechanical stress. Zirconium and copper are introduced into the aluminum alloy to precipitate and form a solid solution, improving the mechanical strength of the aluminum alloy. While maintaining the same conductive cross-section, the overall outer diameter of the conductor is reduced, making the conductor lightweight to meet higher power transmission requirements.

This utility model discloses a sealing door for cold storage, specifically relating to the field of sealing door technology. It includes two sealing doors, each comprising a base layer with an insulation board inside. The base layer is made of high-strength aluminum alloy, and the insulation board is made of polyurethane foam. A moving mechanism is located at the top of each sealing door to drive its movement. Two wheels are movably connected to the bottom of each sealing door. The moving mechanism includes a support column at the top of the sealing door, with placement grooves on both sides inside the support column. Each placement groove contains a rack and a support frame. This utility model allows the sealing doors to move via the moving mechanism, eliminating the need for manual movement and improving practicality. Furthermore, the use of an electric heating wire prevents the sealing door from freezing to the cold storage wall, ensuring normal operation and safe use of the sealing door in low-temperature environments.

This invention relates to the field of metal surface treatment technology. The method first involves anodizing an aluminum alloy sheet in a sulfuric acid electrolyte to obtain a porous oxide film. Then, using this film as the cathode, ultrasonic pulse electrochemical sealing is performed in a colloidal sealing solution containing an oxidant, organic fuel, and a boron source. Utilizing the ultrasonic cavitation effect and the relaxation characteristics of the pulsed electric field, directional deposition of colloidal particles deep within the micropores is achieved. Finally, gradient heat treatment completes low-temperature drying, liquid-phase pre-melting, self-propagating reaction initiation, and densification sintering. This method optimizes mass transfer and buffers thermal stress through a boron-source molten liquid-phase medium. It utilizes an in-situ self-propagating exothermic reaction to create localized high temperatures, promoting the transformation of the pore filler into a chemically inert, dense ceramic phase. This solves the problems of high-temperature cracking in traditional hydrated sealing layers and air pockets at the bottom of conventional physical filling pores, improving the high-temperature resistance, thermal shock resistance, and long-term chemical corrosion resistance of high-strength aluminum alloy sheets such as 6061 and 7075.

This invention discloses a battery aluminum-plastic film composite material for new energy vehicles, aiming to solve the problem that existing materials cannot meet the stringent requirements of new energy vehicles. It comprises a three-layer structure from the outside in: an outer protective layer is a high-strength aluminum alloy sheet with a thickness of 20-50 μm containing specific rare earth elements and a Vickers hardness of 80-120 HV, which undergoes micro-arc oxidation treatment to improve corrosion resistance; the middle barrier layer is composed of alternating layers of modified PVA film with a crosslinking degree of 30%-60% and ultra-thin aluminum foil, with a total thickness of 10-30 μm, exhibiting excellent water vapor and oxygen barrier properties; the inner heat-sealing layer is a novel thermoplastic elastomer material incorporating 2%-8% nano-silica, with a thickness of 10-20 μm, providing good heat-sealing performance and electrode compatibility. This material is meticulously prepared with strictly controlled parameters for each layer, making it suitable for various new energy vehicle scenarios such as urban commuting, long-distance highway travel, extreme climate regions, and high-performance sports cars. Its comprehensive performance is outstanding, strongly promoting the development of the new energy vehicle industry.

This invention discloses a high-strength aluminum alloy fin material for air separation thermal management and its preparation method, relating to the field of aluminum alloy material technology. The chemical composition, by weight percentage, is: Fe: 0.15-0.65%, Si: 0.15-0.65%, Cu: 0.05-0.25%, Mn: 0.9-1.5%, Zr: 0.05-0.25%, with optional elements including Ti: 0-0.30%, Zn: 0-0.1%, La: 0-0.1%, Ca: 0-0.1%. The content of a single impurity is ≤0.05%, the total impurity content is ≤0.15%, and the remainder is Al and unavoidable impurities. The weight ratio of Fe to Si is 0.9-1.2:1. This invention, through basic strengthening with Mn and Zr, combined with composite microalloying of Ti / La / Ca / Zn, forms a stable and dispersed strengthening phase. After brazing, the tensile strength is ≥165MPa, and can reach up to 205MPa, which is significantly better than the traditional 3003 alloy (only 95MPa after brazing), effectively improving the burst pressure and structural stability of the equipment.

A method for manufacturing an aluminum alloy sheet or plate is provided, comprising: a step of casting an alloy, wherein the alloy has a composition comprising the following elements and weight percentages: 6.80 to 10.00 wt% Zn, 2.20 to 3.50 wt% Mg, 1.30 to 4.00 wt% Cu, 0.01 to 0.30 wt% Sc, and 0.05 to 0.20 wt% Zr; a step of cold rolling the aluminum alloy sheet or plate at room temperature under a reduction of about 5% to about 20% per pass; a step of subjecting the sheet or plate to solution heat treatment by heating the sheet or plate to a temperature of about 400°C to 500°C; a step of quenching the sheet or plate; and a step of performing artificial aging hardening by heating the sheet or plate to a temperature of about 80°C to 200°C and maintaining the sheet or plate at this temperature for a period of about 30 minutes to 100 hours.

This utility model discloses a hollow planetary reducer motor with encoders, including a main housing, a rear housing, and a hollow planetary reducer. The rear housing houses a power board, a control board, an encoder connecting shaft, and dual encoders. The power board and control board are separated by ceramic insulating pillars. The hollow planetary reducer includes an internal gear ring, a sun gear, etc. The internal gear ring is connected to the stator, and the sun gear is connected to the rotor. 3-5 planetary gears are evenly distributed circumferentially for meshing transmission. The dual encoders are connected to the rotor and the output flange respectively via the connecting shaft, achieving precise feedback. The main and rear housings are made of high-strength aluminum alloy, with heat dissipation fins on the rear housing. The control board integrates a communication protocol chip, supporting automatic zero-point calibration. The output flange has a standard robot interface, a large-diameter hollow channel, and a wear-resistant insulating layer on the inner wall, meeting the needs of various complex scenarios and combining efficient power transmission with precise control performance.

The utility model relates to fan impeller technical field, concretely is a kind of high-strength aluminum alloy impeller structure for high pressure fan, including the base disc and front cover assembly made of high-strength aluminum alloy, leaf blade assembly is arranged between the base disc with the front cover assembly, annular reinforcing assembly is provided at the back of base disc, connecting piece is fixed in the center of annular reinforcing assembly, the inside of base disc is equipped with multiple annular distribution counterweight, the utility model is designed and cooperates with counterweight etc. structure of base disc, front cover assembly, leaf blade assembly, annular reinforcing assembly, connecting piece, multiple technical promotion is realized, high-strength aluminum alloy is used as main material, while having good strength basis in the guarantee light weight.

This utility model discloses a burglarproof high-strength aluminum alloy window for use in the field of doors and windows. It includes an aluminum alloy frame, multiple aluminum alloy protective vertical bars, and multiple aluminum alloy reinforcing horizontal bars. The protective vertical bars are vertically arranged and horizontally fixed at equal intervals inside the aluminum alloy frame. The reinforcing horizontal bars are horizontally arranged and vertically fixed at equal intervals inside the aluminum alloy frame. The aluminum alloy frame, protective vertical bars, and reinforcing horizontal bars are all hollow tubular structures. A sealing tube, equal in length to the protective vertical bar, is installed inside each protective vertical bar. The sealing tube is filled with compressed gas and also has an alarm whistle inside. When criminals use tools to cut the protective vertical bars, the sealing tube ruptures, and the compressed gas inside overflows from the rupture. The overflowing gas causes the alarm whistle to sound, thus achieving the alarm function. The structure is simple and does not rely on any electronic equipment, making it more stable and reliable.

The present application relates to the technical field of aluminum alloy, and particularly relates to a high-strength aluminum alloy for pressure vessel and a preparation method thereof. The high-strength aluminum alloy for pressure vessel is composed of an aluminum alloy base and a pure aluminum transition layer and an AlZrHf composite layer on the surface of the aluminum alloy base. The aluminum alloy base is composed of the following elements in percentage by weight: Cu: 2.8-3.4%, Li: 1.2-1.6%, Mn: 0.3-0.4%, Mg: 0.55-0.95%, Ag: 0.18-0.26%, Zr: 0.2-0.3%, Sr: 0.08-0.16%, Ti: 0.02-0.06%, Si: 0.03-0.06%, Fe: 0.01-0.04%, and the balance of Al and inevitable impurities. The high-strength aluminum alloy for pressure vessel has good strength, toughness and low-temperature cold brittleness resistance. The AlZrHf composite layer on the surface of the high-strength aluminum alloy for pressure vessel can effectively improve the wear resistance and surface hardness of the high-strength aluminum alloy for pressure vessel, and solves the problems of low surface hardness and insufficient wear resistance of the existing aluminum alloy.

A high-strength aluminum alloy material suitable for humanoid robot skeletons and its preparation method relate to the field of humanoid robots. The material includes an aluminum matrix and modified zirconia dispersed within the aluminum matrix. The modified zirconia comprises hollow mesoporous zirconia, cerium oxide loaded within the pores of the hollow mesoporous zirconia, and a silica sealing layer covering the outer surface of the hollow mesoporous zirconia. This invention solves the problems of poor interfacial bonding and low plasticity in traditional ceramic / aluminum composite materials, producing an aluminum alloy with high strength, high toughness, and low density, perfectly meeting the stringent requirements of humanoid robot skeletons for high load-bearing capacity and high mobility.

This invention relates to the field of aluminum alloy technology, and discloses a high-strength aluminum alloy for metal molds and its preparation process; including the following steps: Step 1: Cleaning and drying the aluminum alloy to obtain an aluminum alloy substrate; sequentially magnetron sputtering an AlTiN layer, a TiN layer, and a Ti layer onto the surface of the aluminum alloy substrate to obtain a pre-formed aluminum alloy substrate; Step 2: Placing the pre-formed aluminum alloy substrate in an electrolyte for anodic oxidation to form a porous titanium-based composite oxide layer, cleaning and drying, magnetron sputtering a TiB2 layer, and heat treatment to obtain a high-strength aluminum alloy. To form a TiB2 layer on the surface of the aluminum alloy to improve hardness; since the electrode potential difference between aluminum alloy and TiB2 is large, direct contact between the two will cause galvanic corrosion; therefore, in this solution, an AlTiN layer, a TiN layer, and a Ti layer are sequentially magnetron sputtered on the surface of the aluminum alloy; direct contact between the aluminum alloy substrate and the TiB2 layer is isolated, protecting the aluminum alloy substrate from damage.