14 results about "Mg composite" patented technology

A SiC p / Mg composite material brazing method, relates to a Mg-based composite material brazing method. The present invention aims to solve the current SiC p / Mg composite materials are difficult to wet and it is difficult to form effective joints under existing brazing processes. p The brazing material of / Mg composite material brazing has good wettability with the base material to be welded. p After intermittent pressure-assisted brazing of SiC / Mg composite materials, high-quality welded joints with good comprehensive performance were obtained. p The present invention performs intermittent pressure-assisted brazing in an atmospheric environment and uses the brazing material to weld SiC p / Mg composite materials were welded to obtain SiC p The welded components of the / Mg composite material and the brazing filler metal have tight joints, high joint strength and excellent welding effect.

The application discloses a self-circulation C f / Mg composite material recycling device and method, belonging to the field of material recycling; including an electrochemical reaction module, a heating and stirring module connected with the electrochemical reaction module, and a recycling module; the electrochemical reaction is accelerated through the heating and stirring module, and the electrolyte is automatically circulated and filtered through the recycling module, so that the electrolyte concentration is stable and the recovery rate is ensured; the electrochemical reaction module comprises a recycling pool containing electrolyte and a reaction piece arranged in the recycling pool; the reaction piece comprises a recycling piece connected with a positive electrode of a power supply and a carbon steel plate connected with a negative electrode of the power supply; the recycling module filters and recycles the electrolyte after reaction, and circulates the filtered electrolyte to the recycling pool again, so as to be continuously recycled. The application can recycle at room temperature, avoids the risk of flammability and explosion of magnesium alloy in a high-temperature environment, reduces energy consumption while ensuring the recovery rate, and realizes green and environment-friendly recycling.

The invention discloses a Csf / Mg composite material integrated forming device which comprises a smelting and infiltration module, movable ultrasonic equipment extending into the smelting and infiltration module and a gas module communicating with the smelting and infiltration module. The smelting and infiltration module comprises smelting equipment and a cavity-divided crucible located in the smelting equipment; a choke plug is arranged at the joint of the upper cavity and the lower cavity of the cavity-divided crucible; the invention further discloses an integral forming method of the Csf / Mg composite material. According to the device, the movable ultrasonic equipment is arranged, ultrasonic vibration is introduced into the whole process of smelting, infiltration and solidification, element segregation in a tissue is avoided, the crucible of a cavity dividing structure is arranged, growth of second-phase particles is effectively restrained, the second-phase particles smoothly penetrate through a porous channel of a prefabricated body, and the mechanical property of the prefabricated body is improved. And segregation of the magnesium alloy melt at the top of the porous carbon fiber preform is prevented, and the method is suitable for the technical field of magnesium-based composite material forming.

The invention belongs to the technical field of preparation of light metal plates, and particularly relates to a preparation method of a heterogeneous aluminum alloy composite plate. The method comprises the following steps: preheating an Al-Zr plate sample, dipping the Al-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si composite sample; the method comprises the following steps: preheating an Al-Zr-Si composite sample, dipping the Al-Mg-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si-Mg composite sample; and the Al-Zr-Si-Mg composite sample is pretreated and subjected to accumulative ply rolling, and the heterogeneous aluminum alloy composite board is obtained. The prepared heterogeneous aluminum alloy composite board is of a layered gradient heterostructure, the mechanical property layout of'toughness-strength-stronger 'from outside to inside is achieved, the bearing capacity of each layer is fully played, the best matching of strength and plasticity is achieved, and the performance requirements of shells of aerospace and electronic equipment are met.

The invention discloses a zero-inclusion stainless steel electron beam melting directional solidification preparation method and belongs to the technical field of stainless steel smelting. The alloy is quantitatively supplemented according to the Cr content of the stainless steel; when the base metal components of the alloy subjected to electron beam melting can be adjusted in the induction melting process, the Cr element is supplemented in the induction melting process; when the electron beam melting alloy base metal is a standard alloy component, the alloy component is called back in an alloy package mode during electron beam melting; in the electron beam melting process, a Ca-Mg composite reactant is added, and conversion and removal of large-size inclusions in the stainless steel are achieved; and a directional solidification electron beam scanning mode is designed, and preparation of a zero-inclusion stainless steel product is achieved. According to the method, the electron beam melting directional solidification technology is matched with the addition of the Ca-Mg reactant and the variable-radius annular scanning mode, the problems that in the slagging and multi-stage melting process, the flow is long, the process control is complex, and the removal effect of large-size inclusions is not obvious are solved, and the product can reach the cleanliness level of a zero-inclusion product.

The application belongs to the field of metal materials, and specifically discloses a preparation method of Ti / Mg composite material powder for 3D printing; the preparation method of the Ti / Mg composite material powder comprises the following steps: mixing titanium powder and a magnesium source, and then sequentially performing ultrasonic dispersion and grinding to obtain a composite powder; performing segmented hot-pressing sintering on the composite powder to obtain a composite material block; hot-extruding the composite material block into a filament to obtain a composite material filament; and performing plasma atomization on the composite material filament to obtain the Ti / Mg composite material powder. The preparation method has the advantages of simplicity, stability, easy operation, and the like, and the prepared Ti / Mg composite material powder has high sphericity, high fluidity, uniform composition, good dispersity, and the like, and can meet the requirements of the 3D printing process.

This invention provides a Gr / Al-Mg2Si-Mg composite powder, its preparation method, alloy components, and end products. The composite powder comprises 6.0%~14.0% Mg, 1.0%~6.0% Si, 0.1%~0.6% Mn, 0.1%~0.2% Ti, 0.28%~0.32% Al-5Ti-B, 1.0%~8.0% Mg2Si, and 0.5%~3% graphene Gr, with the balance being Al. By increasing the Mg content and adding a small amount of Si, the content of the Mg2Si reinforcing phase is increased. Simultaneously, in addition to introducing small amounts of Mn and Ti, graphene Gr is introduced as a reinforcement to significantly improve mechanical properties. Through forming processes such as selective laser melting, alloy components with high yield strength, high tensile strength, and high elongation can be formed, filling the gap in low-cost, high-strength aluminum alloy systems produced by selective laser melting.

A kind of zero inclusion stainless steel electron beam melting directional solidification preparation method belongs to stainless steel smelting technical field.The alloy is quantitatively supplemented according to the Cr content of stainless steel: when the alloy base material component of electron beam melting can be adjusted in the process of induction melting, the Cr element is supplemented in the process of induction melting;when the alloy base material of electron beam melting is standard alloy component, the alloy component is adjusted back through the form of alloy package in the process of electron beam melting;in the process of electron beam melting, Ca-Mg composite reaction agent is added to realize the conversion and removal of large-size inclusions in stainless steel;the directional solidification electron beam scanning mode is designed to realize the preparation of zero-inclusion stainless steel product.The present application solves the problems of long process, complex process control, and poor removal effect of large-size inclusions in the process of slagging and multi-stage melting by using electron beam melting directional solidification technology, adding Ca-Mg reaction agent and variable radius annular scanning mode, and the product can reach the cleanliness level of zero-inclusion product.

The invention discloses a self-circulation Cf / Mg composite material recovery device based on thermoelectric synergy and a method thereof, and belongs to the field of material recovery. Comprising an electrochemical reaction module as well as a heating and stirring module and a recycling module which are connected with the electrochemical reaction module, the electrochemical reaction is accelerated through the heating and stirring module, automatic circulation and filtration of electrolyte are realized through the recycling module, and the concentration stability and the recycling rate of the electrolyte are ensured; the electrochemical reaction module comprises a recovery pool containing electrolyte and a reaction part arranged in the recovery pool, and the reaction part comprises a recovery part connected with the positive electrode of a power supply and a carbon steel plate connected with the negative electrode of the power supply; and the recycling module is used for filtering and recycling the reacted electrolyte and recycling the filtered electrolyte to the recycling pool for continuous recycling. Recycling can be conducted at the normal temperature, the risk that magnesium alloy is flammable and explosive in the high-temperature environment is avoided, meanwhile, the energy consumption is reduced while the recycling rate is guaranteed, and green and environment-friendly recycling is achieved.

The invention provides TiBCN / AlSi10Mg composite powder, a preparation method of the TiBCN / AlSi10Mg composite powder and a 3D printing method of a TiBCN / AlSi10Mg composite material, and belongs to the technical field of additive manufacturing. The purified alloy liquid is subjected to ultrasonic treatment and then subjected to pneumatic atomization, obtained composite powder particles are uniform in distribution and composition and free of agglomeration, TiBCN is adopted as a reinforcement phase, in the process of preparing the composite material through 3D printing, the surface of TiBCN is partially molten and reacts to form a shell layer, and the interior unmolten TiBCN forms a core layer, so that the TiBCN exists in a matrix in a core-shell structure, and the composite material is prepared. And the interface bonding effect of a reinforcing phase and a matrix can be improved, so that the mechanical property of the composite material is improved.

This invention belongs to the field of materials technology, specifically relating to a biomedical nanocrystalline Ti-Mg alloy coating with a micro / nano porous structure, its preparation method, and its applications. This invention constructs a nanocrystalline Ti-Mg alloy coating with a micro / nano porous structure on the surface of pure titanium or titanium alloys. Specifically, its interior contains micron-sized macropores, while its pore walls contain numerous submicron to nano-sized micropores. The framework material is nanocrystalline, thereby achieving a synergistic enhancement of the bioactivity and adjustment of the elastic modulus of the Ti-Mg alloy through porous structures of different scales. Simultaneously, the nanocrystalline structure strengthens the mechanical properties of the porous coating. Ti acts as the framework, providing mechanical support, while Mg serves as the bioactive and micro / nano-porous material. When the Ti-Mg composite material is implanted into the human body, Mg gradually degrades, which can improve the material's bioactivity (inducing new bone formation).

An oriented electrical steel sheet according to an embodiment of the present invention includes: a base texture; an AI permeation layer positioned on the base texture; and a film positioned on the AI permeation layer, wherein the AI permeation layer includes AI at 0.5 to 5 wt %, and the film includes an Al—Mg composite.

The invention discloses a Zn / Mg composite material with a controllable degradation rate and a preparation method thereof.The Zn / Mg composite material comprises a magnesium alloy net and a zinc alloy, the zinc alloy is compounded with the magnesium alloy net in an infiltration mode, the magnesium alloy net is a multi-layer space net made of a magnesium alloy material, the prism diameter of a magnesium alloy grid in the magnesium alloy net is 0.5-3.0 mm, and the prism diameter of the magnesium alloy grid in the magnesium alloy net is 0.5-3.0 mm. Each layer of meshes in the multi-layer space net is polygonal, the size of the meshes is 0.5-3.0 mm, and the interlayer spacing between every two adjacent layers of meshes is 0.5-2.5 mm. By utilizing the characteristic that the melting temperature difference between the zinc alloy and the magnesium alloy is large, the magnesium alloy material is firstly prepared into the magnesium alloy net, then the liquid zinc alloy permeates at a specific temperature by utilizing the liquidity and permeability of the liquid zinc alloy and is subjected to heat preservation, and finally the zinc alloy and the magnesium alloy are fused into the composite material; the composite material combines the rapid degradation characteristic of the magnesium alloy and the slow-release degradation performance of the zinc alloy, and the degradation rate is regulated and controlled by utilizing the galvanic corrosion difference of the magnesium alloy and the zinc alloy, so that the prepared Zn / Mg composite material becomes an ideal biomedical material.

This invention discloses a biodegradable iron-reinforced Zn / Fe / Mg composite material, its preparation method, and its applications. The preparation method involves mixing magnesium powder and zinc powder to obtain a mixed powder. Iron foam is then filled with the mixed powder, and two Zn plates are placed on top and bottom to cover the iron foam, forming a composite plate. The composite plate is then subjected to single-pass cold rolling to obtain a cold-rolled plate. The cold-rolled plate is cut in half lengthwise, stacked, and then subjected to single-pass cold rolling again. This process of cutting, stacking, and single-pass cold rolling is repeated until the biodegradable Zn / Fe / Mg layered composite material is obtained. The biodegradable Zn / Fe / Mg composite material prepared by this invention exhibits significant work hardening ability at room temperature, showing a 260% strength increase compared to the same pass of pure zinc plate rolling. It also possesses excellent mechanical properties and antitumor properties.