Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material

A reticulated silicon carbide, reinforced aluminum-based technology, applied in metal material coating process, vacuum evaporation plating, coating and other directions, can solve the problem of increased material manufacturing cost, limited material shape and size, complex composite process, etc. problem, to achieve the effect of interface response control

Active Publication Date: 2022-07-29
GUANGZHOU CITY CONSTR COLLEGE
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The vacuum-air pressure casting method requires sophisticated vacuuming and pressure-holding equipment, which limits the shape and size of the material. At the same time, it will also lead to an increase in the manufacturing cost of the material and lower production efficiency;
[0008] Squeeze casting often needs to be carried out under pressure or external vacuum, which will lead to more complicated composite process, higher production cost and lower production efficiency;
[0009] Although the pressureless infiltration is completed under normal pressure, the infiltration driving force needs to be generated under the protective atmosphere of nitrogen gas. For aluminum alloys, if the infiltration process is kept under nitrogen atmosphere for a long time, the composite material will be damaged. Severe interfacial reactions occur at the interface, resulting in insufficient densification of the material and prone to hydrolysis during processing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material
  • A kind of preparation method of three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material
  • A kind of preparation method of three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of the three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material provided by this embodiment includes the following steps:

[0053] (1): The surface of three-dimensional mesh porous silicon carbide ceramics (30PPI, commercially available) is subjected to acid leaching and roughening treatment (the mixed acid used in the acid leaching and coarsening treatment is a mixed acid solution of diluted concentrated nitric acid and concentrated hydrofluoric acid, The volume ratio of concentrated nitric acid and concentrated hydrofluoric acid is 5:1; the ultrasonic treatment time is 1 to 20 minutes, and the mixed acid is a mixed acid solution of concentrated nitric acid and concentrated hydrofluoric acid with a diluted volume concentration of 35 to 40%) to make The surface is roughened, and then the ceramic corners are ground (electronic grinding wheel grinding is used to grind the sample on the side of a 300# electronic ...

Embodiment 2

[0065] The difference from Example 1 is that in step (1), the three-dimensional network porous silicon carbide ceramic is prepared by itself, and the specific steps are as follows:

[0066] Including two times of centrifugal slurry SiC slurry forming and secondary slurry sintering technology, the first centrifugal slurry is to immerse the pretreated organic foam into the formula designed containing sintering aids and binders. In the slurry, knead to fully wet the slurry and fill the foam; then centrifuge at high speed on a centrifuge to remove excess slurry, and prepare a porous body that is uniformly coated with a thin layer of slurry without blocking pores; Drying at room temperature; the second centrifugal slurry is to immerse the porous body dried in the previous step into the ceramic slurry again, and at the same time apply a vacuum to make the slurry completely enter the foam body and fully immerse; then, centrifuge again to remove excess A porous body with the required ...

Embodiment 3

[0072] Different from the embodiment, the three-dimensional network porous silicon carbide ceramic in step (1) is 40PPI.

[0073] In step (1), laser etching is used for roughening.

[0074] The particle size of the aluminum alloy powder in step (3) is 0.5 mm.

[0075] Step (4) The filling amount of the aluminum alloy powder is 75% of the total amount of the pores of all three-dimensional network porous ceramics.

[0076] In step (5), in a nitrogen environment, heated to 1200 ° C, and kept for 0.5 h, then immediately changed to an argon environment, continued to heat up to 1300 ° C, and after holding for 1 h, stopped heating, and cooled to room temperature with the furnace to take out, After processing, a three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material is obtained.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a three-dimensional networked silicon carbide ceramic reinforced aluminum matrix composite material, comprising the following steps: (1) selecting three-dimensional networked porous silicon carbide ceramics, and performing surface roughening, grinding, cleaning and drying treatment; (2) ) carry out evaporation process, wrap metal Ti coating on the rib of three-dimensional network porous silicon carbide ceramics; (3) prepare aluminum alloy ingot Al-10Mg-12Si-2Ti, then grind into aluminum alloy powder; (4) in vacuum Under the environment, the aluminum alloy powder is filled in the pores of the three-dimensional network porous silicon carbide ceramics, and then transferred to the tube furnace; (5) in the nitrogen environment, heated to 1300 ℃, and kept for 0.5h, then turned into Under the argon atmosphere, continue to heat up to 1300 ℃, after holding for 1 h, stop heating, and cool with the furnace. The method can realize the infiltration of aluminum alloy to ceramics under normal temperature and pressure, has high infiltration efficiency and low cost, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a three-dimensional network silicon carbide ceramic reinforced aluminum matrix composite material. Background technique [0002] At present, the preparation technology of three-dimensional network ceramic / metal double (co) continuous phase composite materials mainly includes the following methods: [0003] (1) The research group of Professor Ru Hongqiang from Northeastern University successfully prepared three-dimensional network SiC ceramic / 20Cr-based, steel-based, copper-based and aluminum-based composite materials with different metal matrices by vacuum-pressure casting method; [0004] (2) The research group of Professor Zhang Jinsong of Shenyang Institute of Metal Research, Chinese Academy of Sciences has prepared three-dimensional network SiC / Cu matrix composite materials by squeeze casting method, etc.; [0005] (3) Cui Yan'...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22D23/06C22C1/03C22C21/02C22F1/043C23C14/02C23C14/18C23C14/24
CPCB22D23/06C23C14/24C23C14/18C23C14/028C23C14/021C22C1/026C22C1/03C22C21/02C22F1/043
Inventor 彭伟李海林龙轩李秋力王锦红林勇李有兵
Owner GUANGZHOU CITY CONSTR COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products