13 results about "Alloy deposition" patented technology

The application discloses a kind of heat insulation films and preparation methods thereof.The heat insulation film includes substrate layer, hard coating layer, first dielectric layer, first barrier layer, noble metal layer, second barrier layer, second dielectric layer and adhesive layer from inside to outside.The first dielectric layer is aluminum-doped zinc oxide, the noble metal layer is a silver-gold alloy layer with controllable thickness, and has a gradient distribution of gold content in the thickness direction;The second dielectric layer is formed into a layered composite structure by alternately stacking titanium dioxide and hafnium oxide.The preparation method includes substrate cleaning and surface activation, hard coating layer coating and curing, magnetron sputtering of dielectric layer and barrier layer, alloying deposition of noble metal layer, alternating sputtering of layered composite dielectric, and adhesive layer coating and compounding.The application realizes excellent infrared barrier performance while maintaining high visible light transmittance through the synergistic design of multi-layer structure and components, significantly improves the stability in a humid and hot environment, and reduces the risk of performance degradation.

The invention discloses a stirring friction additive forming process of an alloy heterogeneous laminated component, and belongs to the technical field of metal solid phase additive manufacturing. A substrate material and an additive raw material are selected; the hollow stirring head is moved to a preset position above the substrate material, and the thickness of an additive layer is set to be h; the additive raw material penetrates through the hollow stirring head to be fixed, the additive raw material synchronously rotates along with the hollow stirring head and is fed towards the substrate material under driving of axial force, and the end of the additive raw material makes contact with the surface of the substrate material and generates friction heat; after the end of the additive raw material is heated and subjected to thermoplastic softening, the feeding speed is increased, and a cavity between the bottom of the hollow stirring head and the base is fully filled with the softened material; and after filling saturation, moving along a set path according to a set moving speed for continuous deposition to form an additive alloy deposition layer attached to the substrate material. According to the method, defect-free heterogeneous metallurgical bonding is achieved, the gradient structure of hard layer bearing and soft layer energy absorption is finally formed, high strength and high ductility are achieved, and the method is suitable for manufacturing of high-performance light-weight components in the fields of aerospace and the like.

The invention discloses a friction plug welding stopper rod based on friction stir additive and a preparation method and application thereof.The friction plug welding stopper rod comprises a connecting section, a transition section and a welding section, the connecting section, the transition section and the welding section are sequentially connected, and the friction plug welding stopper rod is manufactured through a friction stir additive manufacturing method; the connecting section, the transition section and the welding section are respectively formed by a substrate used in the friction stir additive manufacturing method, the formed multi-layer composite material deposition layer and the formed multi-layer aluminum alloy deposition layer. The base plate, the multiple composite material deposition layers and the multiple aluminum alloy deposition layers can be in metallurgical bonding in sequence from bottom to top to form a deposition component, and after solid solution-aging composite heat treatment is conducted on the deposition component, the friction plug welding stopper rod is obtained through machining. According to the method, the structure of the friction plug welding stopper rod can be strengthened, so that the friction plug welding stopper rod has higher strength and heat stability in a geometric mutation area, and the fracture resistance and fatigue resistance are remarkably improved.

The invention relates to a device and a method for manufacturing a heterogeneous alloy structure through ultrasonic regulation and control electron beam additive manufacturing, in particular to an electron beam additive manufacturing device for feeding wires through a main shaft and a shaft side and regulating and controlling element diffusion and phase generation in combination with an ultrasonic field effect and a forming method of the electron beam additive manufacturing device. According to the electron beam + double-wire + ultrasonic synergetic additive manufacturing method and system, in the wire bundle coaxial cold cathode electron beam fuse additive manufacturing process, an ultrasonic auxiliary system is introduced to act on a forming base plate, dynamic regulation and control over the heterogeneous alloy element mixing behavior and the structure evolution process in a molten pool are achieved, and therefore the mechanical performance of the molten pool is improved. The problems of coarse grains, uneven structures and performance fluctuation in the heterogeneous alloy deposition process are solved, structure refinement and component homogenization are achieved, and the overall service performance of a deposition component is improved.

The invention relates to a method for growing a ferroelectric layer (11) of a rhombohedral ferroelectric alloy on a substrate (10), wherein a growth sublayer (21) formed of a stack of crystalline sheets linked together by van der Waals bonds is arranged on the substrate, and then the rhombohedral crystalline ferroelectric alloy in the form of crystalline grains (12) is deposited onto the growth sublayer at a suitable temperature with a component that segregates between the crystalline grains. Figure for the abstract: Fig. 1.

The invention discloses a corrosion and wear resistant high-entropy alloy coating and a preparation method thereof, the high-entropy alloy coating is arranged on the surface of a matrix, and a Cr diffusion layer, a TiVCr medium-entropy alloy intermediate layer, a TiVCrZrNb high-entropy alloy diffusion layer and a TiVCrZrNb high-entropy alloy deposition layer are sequentially arranged on the surface of the matrix. The preparation method comprises the following steps that in a vacuum environment, the Cr diffusion layer and the TiVCr medium-entropy alloy middle layer are sequentially prepared on the surface of a pretreated base body through a magnetron sputtering method; and a TiVCrZrNb high-entropy alloy diffusion layer and a TiVCrZrNb high-entropy alloy deposition layer are sequentially prepared on the surface of the TiVCr medium-entropy alloy intermediate layer through a double glow plasma surface metallurgy method. The obtained high-entropy alloy coating is good in corrosion resistance and good in wear resistance; and the interface bonding strength between the coatings and between the coating and the matrix is obviously enhanced, and the overall stability of the coating system is greatly improved.

The present application relates to a kind of gradient hole structure's self-supporting alkaline electrolytic water hydrogen production electrode and its preparation method and application, wherein the preparation method includes: A) in two electrode system, two nickel iron metal salt containing different gas production additive concentration are used as electroplating solution, nickel mesh is used as working electrode, platinum sheet is used as counter electrode, electrodeposition is carried out in two kinds of electroplating solution in turn, and make that electrodeposition is while current density is uniformly increased, obtain the nickel mesh material of gradient porous nickel iron alloy deposition layer supported;B) the nickel mesh material obtained in step A is washed, dried, and the gradient hole structure's self-supporting alkaline electrolytic water hydrogen production electrode is obtained.Compared with prior art, the gradient porous nickel iron deposition layer of composite on nickel mesh substrate material is prepared using electrodeposition method in the present application, and gradient porous structure greatly improves the real surface area of electrode, and promotes bubble discharge simultaneously.

Sliding element (1), comprising: a back sheet (10) made of steel as the outermost layer of the sliding element (1), a sintered lining (11) consisting of Cu, Bi and Sn, and an electroplated cover layer (12) as a sliding surface, which is formed from an alloy deposition film of Bi and Sb, wherein the cover layer (12) consists of Bi, Sb and unavoidable impurities, and wherein the Sb concentration on the surface of the cover layer (12) is 0.92 wt% or more and 2.1 wt% or less, wherein the cover layer (12) has a concentration gradient, wherein the Sb concentration increases as the depth or distance from the surface of the cover layer (12) increases.

The application discloses a kind of based on dynamic heat input's laser double-wire additive manufacturing aluminum / magnesium bimetallic material method, it is related to metal material additive manufacturing technical field.The method includes the following steps: using aluminum alloy welding wire and magnesium alloy welding wire as deposition material, aluminum alloy and magnesium alloy are sequentially deposited on the surface of substrate by double-wire feeding mechanism, and aluminum / magnesium bimetallic material is obtained;Aluminum alloy deposition process and magnesium alloy deposition process are independently carried out layering dynamic heat input parameter control respectively;The heat input parameter includes laser power and wire feeding speed.The application uses the manufacturing process of "double-wire independent feeding+dynamic heat input control", wherein, double-wire independent feeding can improve manufacturing efficiency;Dynamic heat input control can inhibit the concentrated generation of interface brittle intermetallic compound from the process level, and improve interface bonding strength.The aluminum / magnesium bimetallic material prepared by the method of the application has good interface bonding strength and excellent comprehensive mechanical properties.

The application discloses a method for eliminating anisotropy of a microstructure and performance of additive manufacturing TiAl alloy, and relates to the field of additive manufacturing.The method comprises the following steps: step 1, depositing Ti48Al alloy by adopting an electric arc additive manufacturing technology to obtain a Ti48Al alloy deposition layer; step 2, performing in-situ heat treatment on the deposition layer, that is, performing re-scanning treatment on the deposition layer without adding deposition materials; and step 3, after the re-scanning treatment, continuously repeating steps 1 and 2 to deposit Ti48Al alloy, so that Ti48Al alloy with uniform full lamellar crystal group microstructure is obtained.The method can not only eliminate the non-uniformity and anisotropy of the microstructure of the additive manufacturing TiAl alloy, but also obtain the Ti48Al alloy with fine full lamellar crystal group microstructure and improve the mechanical performance of the material.

This invention relates to the field of alloy material composition design and preparation technology, and particularly to a multi-component alloy deposition design method. Specifically, it includes the following steps: (1) proposing an alloy composition design model based on multi-target confocal magnetron sputtering technology; (2) based on the alloy composition design model, calculating the deposition rate, sputtering power, and sputtering time of each component according to the accurate multi-alloy target composition required for the study; (3) stacking and integrating alloy sublayers with different design compositions onto a single sample based on the above steps. The method provided by this invention can achieve accurate prediction and design of alloy composition, with a large controllable range, from 0-100 at.% and a prediction deviation of less than 5 at.%; it can achieve high-throughput preparation of alloy samples by combining alloy sublayers with multiple compositions onto a single sample through a single experimental procedure.

The invention relates to the technical field of high-temperature alloy laser cladding repair manufacturing, and discloses a heat treatment process for regulating and controlling the structure and performance of an IN 625 alloy deposition layer. According to the method, the IN 625 alloy laser deposition layer is subjected to continuous heat treatment under a specific process, so that the deposition chromatography phase form and distribution and microhardness regulation and control are effectively realized, and a technical reference is provided for related employees to design and optimize the heat treatment process of the IN 625 alloy deposition layer.

The invention relates to the technical field of nickel-iron alloy deposition, and discloses gradient nano nickel-iron alloy double-sided deposition equipment which comprises an electro-deposition tank, a partition plate is installed at the middle end of the inner side of the electro-deposition tank, and the partition plate is provided with a blocking structure used for separating electro-deposition liquid in a first tank and an electro-deposition liquid in a second tank. The rubber sleeve is extruded by the sliding block to be gradually extruded into the position between the two extrusion blocks, the two sides of the rubber sleeve are in synchronous interference fit, so that the surfaces of the two sides of the rubber sleeve and the surfaces of the two sides of the nickel-iron alloy block are tightly attached, the gap is zero, and when the downward pressing force of the screw rod is transmitted to the rubber sleeve through the sliding block, elastic deformation of rubber is utilized, so that the rubber sleeve is tightly extruded. Enough contact pressure is generated on the contact surface, so that physical sealing is formed, the magnitude of interference of the rubber sleeve is 1%-5% of the diameter of the nickel-iron alloy block at the moment, the nickel-iron alloy block is tightly attached after being assembled, the gap is zero, communication of the first pool and the second pool is thoroughly isolated, and the beneficial effect that deposition liquid of the double-sided electro-deposition nanometer nickel-iron alloy cannot interfere with each other is achieved.