The invention discloses a titanium alloy/ceramic composite material and the preparation method thereof. The titanium alloy/ceramic composite material comprises a titanium alloy matrix and ceramic aggregates, wherein the titanium alloy matrix wraps the ceramic aggregates, the ceramic aggregates are located on the same plane, and gaps are formed between every two adjacent ceramic aggregates; the ratio of the height of the ceramic aggregates to the height of the titanium alloy/ceramic composite material is 0.1-0.7. By adopting the preparation method of three-dimensional constraint of the titanium alloy powder on ceramic aggregates under hot isostatic pressure, the obtained titanium alloy/ceramic composite material has the advantages of light weight, high elasticity resistance, multiple bullet resistance and the like.

Aluminum alloy/ceramic composite material and preparation method thereof

The invention discloses a method for preparing a lattice-like dot matrix reinforced phase ceramic composite material. The method comprises the following steps: intelligently arranging alumina microspheres, performing low temperature solidification treatment, mixing the obtained alumina microsphere framework with a zirconium dioxide slurry, filling a mold with the obtained mixture, degreasing the mixture, placing the obtained green body in a high-heat inert carbon tube device, and carrying out sintering molding to obtain the lattice-like dot matrix reinforced phase ceramic composite material. The method has the advantages of high component control precision, strong process stability, strong repeatability, and realization of the strengthening and toughening of a ceramic composite material.

Method for preparing lattice-like dot matrix reinforced phase ceramic composite material

The invention discloses a wear-resistant part with a space latticed ceramic-metal composite layer and a preparation method thereof. The preparation method comprises the following steps of firstly, forming ceramic particles into a spherical ceramic preform, stacking the spherical ceramic preform into a space latticed ceramic block, placing the ceramic block in a mold cavity, pouring molten metal into the mold cavity, and obtaining the wear-resistant part with the space latticed ceramic-metal composite layer after forming. The prepared wear-resistant part prepared by the preparation method is more excellent in strength and wear resistance and not prone to falling off, and the composite layer of the obtained wear-resistant part is large in thickness and longer in service life.

Wear-resistant part with space latticed ceramic-metal composite layer and preparation method thereof

A high melting point Kelvin structure lattice metal. The lattice metal is a three-dimensional Kelvin structure expanded from a basic unit. The three-dimensional Kelvin structure is made of a high melting point metal material, and the basic unit is a Kelvin structure lattice metal unit (100) using a prism (101) structure as the main body. The porosity range of the high melting point Kelvin structure lattice metal is 58% to 92%. Also provided are a preparation method for and an application of the lattice metal. A high melting point Kelvin structure lattice metal is prepared using indirect 3D printing in combination with a precise casting process. The prepared high melting point Kelvin structure lattice metal has mechanical properties of tending to be isotropic, and has higher strength, rigidity and temperature resistance, which greatly expands the application space of the lattice metal.

High melting point kelvin structure lattice metal and preparation method therefor and application thereof

The invention discloses a preparation method for a ceramic particle reinforced metallic matrix space lattice composite material. The preparation method comprises the following steps that (1) a metal mold comprising a plurality of globular cavities arranged in a plane lattice manner is manufactured, the mold can be divided into upper and lower parts, and a metal net is arranged between the upper and lower parts; (2) ceramic particles and a binder are mixed to prepare slurry, the metal mold is filled with the slurry, compaction and high-temperature sintering are carried out, and single-layer prefabricated bodies are manufactured; (3) metal nets are placed between the single-layer prefabricated bodies for stacking and arranging layer by layer, a binder is added for bonding, high-temperature sintering is carried out, and three-dimensional prefabricated bodies are manufactured; and (4) the three-dimensional prefabricated bodies are placed into a sand mould prepared in advance, pouring of metallic matrix melt is carried out, and infiltration is carried out to prepare the ceramic particle reinforced metallic matrix space lattice composite material. By means of the preparing method, the problem that a micron-order ceramic particle reinforced steel-based composite material is difficult to achieve ordinary pressure permeation and insufficient in toughness is solved.

Preparation method for ceramic particle reinforced metallic matrix space lattice composite material

The invention discloses a composite abrasion-resistant tamping pickaxe which comprises a pickaxe body and a pickaxe palm. The pickaxe body and the pickaxe palm are integrally formed. The pickaxe palmcomprises metal base bodies and a stereoscopic precast body composed of composite small balls in a space lattice array mode. The metal base bodies are wrapped with the interiors and exteriors of the composite small balls in an infiltrated mode. The composite small balls are made of ceramic particles and metal powder. A preparation method of the composite abrasion-resistant tamping pickaxe comprises the steps that the ceramic particles and the metal powder are mixed and ball-milled to the stereoscopic precast body, the stereoscopic precast body is fixed into a tamping pickaxe mold cavity of a pickaxe body and pickaxe palm integrated casting mold cavity, metal base body liquid is fully poured into the whole mold cavity, cooling is conduced, and thus the composite abrasion-resistant tamping pickaxe is prepared. The prepared composite abrasion-resistant tamping pickaxe is resistant to abrasion, high in pickaxe palm hardness, capable of improving abrasion resistance and excellent in impactresistance, falling off and fracture of ceramic particles do not need to be worried about, the service life of the tamping pickaxe is prolonged greatly, the technology is simple, the cost is low, andthe high economic benefits can be achieved.

Composite abrasion-resistant tamping pickaxe and preparation method thereof

The invention discloses a preparation method of a ceramic composite sphere enhanced metal-based composite material and belongs to the field of metal-based composite materials. The preparation method comprises the following steps: preparing slurry for 3D (Three Dimensional) printing from metal powder, sodium silicate, polylactic acid, epoxy resin and water, wherein the solid content in the slurry is 60 percent to 75 percent; pouring the prepared slurry into a hopper and printing a single-layer matrix plate through a 3D printing machine, wherein semispherical holes are formed in upper and lowersurfaces of the single-layer matrix plate or a semispherical hole is only formed in one surface, the thickness of the single-layer matrix plate is 6 to 15mm, the diameter of the semispherical holes is3 to 5mm and the sphere distance is 3 to 5mm; adding ceramic mixed slurry into the semispherical holes of the single-layer matrix plate and then stacking the plurality of single-layer matrix plates;carrying out hot pressing and sintering to obtain the ceramic composite sphere enhanced metal-based composite material. According to the preparation method disclosed by the invention, the problems that ceramic composite spheres are difficultly uniformly distributed in the matrix and the plasticity and toughness of the composite material is poor are solved and the ceramic composite sphere enhancedmetal-based composite material is hopefully used for the abrasion field with high surface requirements.

Preparation method of ceramic composite sphere enhanced metal-based composite material

The invention discloses production equipment for space structure prefabricated bodies. The production equipment comprises a cylinder block, a circular water cooling device, a microwave heating device,a mold, a molding core, a pressing plate and a pulley; the mold comprises an upper mold and a lower mold; the upper mold consists of a left upper mold and a right upper mold; the pressing plate comprises a left pressing plate and a right pressing plate; and the pulley comprises a large pulley and a small pulley. An application method comprises the following steps: the molding core is put in a mold cavity; meanwhile, prefabricated body powder is added for extrusion molding, and is heated through the microwave device; after the molding core is burnt, the heating formation is performed; and themold is taken after cooling to obtain a finished product. The device is simple in structure; and the processes of pressing, molding and drying of various prefabricated bodies with different space structures can be finished at the same time through the whole set of devices, so that the production efficiency of space structure composite materials is effectively improved, the product quality is improved, and the production cost is reduced.

Production equipment for space structure prefabricated bodies and application method

The invention discloses a composite automobile cross axle. A reinforcing body and a base body are molded through an extrusion casting method, the reinforcing body is a composite three-dimensional interpenetrating space structure body reinforced by ceramic particles, and the base body is a metal material. The preparing method comprises the following steps: fully mixing the micron grade ceramic particles, iron powder, potassium titanate fibers, boron oxide, nickel powder and titanium powder, filling a three-dimensional interpenetrating space structure body mold with the mixture, carrying out sintering molding, putting in a cross axle, injecting a metal base body solution, and carrying out extrusion casting to obtain the cross axle. The wear resistance and the ductility of the axle body and the axle neck root part are obviously improved. At the same time, by adding the potassium titanate fibers and the boron oxide, the heat fading efficiency of the cross axle can be reduced, so that the properties of the cross axle are improved, and the service life of the cross axle is greatly prolonged.

Composite automobile cross axle and preparing method thereof

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