Reinforced magnesium-based composite material and preparation method thereof

A composite material and magnesium alloy technology, applied in the field of reinforced magnesium-based composite materials and their preparation, can solve the problems of low content of nano-silicon carbide particles, low infiltration rate, affecting the infiltration of molten metal liquid, etc., and achieve enhanced tensile strength. , the effect of increasing the infiltration rate and increasing the porosity

Active Publication Date: 2020-09-18
NANYANG NORMAL UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, Wang Chaohui disclosed in "Special Casting and Nonferrous Alloys" the research on the structure and performance of AM60 magnesium alloy enhanced by nano-SiC particles, and specifically disclosed that nano-silicon carbide particles were added to the molten AM60 magnesium alloy under the protection of inert gas. The magnesium-based composite material is obtained by stirring and pouring, and its mechanical properties are improved, but the content of nano-silicon carbide particles

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
  • Reinforced magnesium-based composite material and preparation method thereof
  • Reinforced magnesium-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] A method for preparing a reinforced magnesium-based composite material includes the following steps:

[0033] S1. Preparation of modified silicon carbide powder

[0034] Add silicon carbide to hydrofluoric acid and soak for 24h, then take out silicon carbide, wash with water to pH 6.5~7.0, that is, neutral, dry, vacuum ball mill, sieving with 625 mesh screen to obtain modified silicon carbide Powder: Porous silicon carbide powder is obtained through hydrofluoric acid modification, and the particle size of the powder is less than 20μm.

[0035] S2. Preparation of 60wt% AIP isopropanol solution

[0036] Add aluminum isopropoxide (AIP) to the isopropanol solution, sonicate and mix evenly to obtain;

[0037] S3. Under ultrasonic stirring, add modified silicon carbide powder to 60wt% AIP isopropanol solution, wherein the mass ratio of AIP to modified silicon carbide powder is 1:0.6; react at 85°C for 6h ;

[0038] After the reaction is completed, slowly add a mixtur...

Example Embodiment

[0045] Example 2

[0046] A method for preparing a reinforced magnesium-based composite material includes the following steps:

[0047] S1. Preparation of modified silicon carbide powder

[0048] The silicon carbide is added to hydrofluoric acid and soaked for 36 hours, then the silicon carbide is taken out, washed with water to a pH of 6.5-7.0, dried, ball milled in vacuum, and sieved with a 625 mesh screen to obtain modified silicon carbide powder; Hydrofluoric acid modification obtains porous silicon carbide powder, and the particle size of the powder is less than 20 μm.

[0049] S2. Preparation of 70wt% AIP isopropanol solution

[0050] Add aluminum isopropoxide (AIP) to the isopropanol solution, sonicate and mix evenly to obtain;

[0051] S3. Under ultrasonic stirring conditions, add modified silicon carbide powder to 70wt% AIP isopropanol solution, wherein the mass ratio of AIP to modified silicon carbide powder is 1:0.5; the reaction is 3.5 at 100°C h;

[0052] After the reaction...

Example Embodiment

[0060] Example 3

[0061] A method for preparing a reinforced magnesium-based composite material includes the following steps:

[0062] S1. Preparation of modified silicon carbide powder

[0063] The silicon carbide is added to hydrofluoric acid and soaked for 12 hours, then the silicon carbide is taken out, washed with water to a pH value of 6.5 to 7.0, dried, ball milled in vacuum, and sieved with a 625 mesh screen to obtain modified silicon carbide powder; Hydrofluoric acid modification obtains porous silicon carbide powder, and the particle size of the powder is less than 20 μm.

[0064] S2. Prepare 50wt% AIP isopropanol solution

[0065] Add aluminum isopropoxide (AIP) to the isopropanol solution, sonicate and mix evenly to obtain;

[0066] S3. Under the condition of ultrasonic stirring, add modified silicon carbide powder to 50wt% AIP isopropanol solution, wherein the mass ratio of AIP to modified silicon carbide powder is 1:0.8; react at 70℃ for 8h ;

[0067] After the reaction i...

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
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a reinforced magnesium-based composite material and a preparation method thereof. The preparation method of the reinforced magnesium-based composite material comprises the following steps that S1, under an ultrasonic stirring condition, adding modified silicon carbide powder into an AIP isopropanol solution, reacting at 70 DEG C to 100 DEG C for 3 to 8 hours; adding an acetic acid peptizer after hydrolysis, cooling to normal temperature to obtain slurry; S2, adding a binder into the slurry, transferring the slurry into a mold for casting molding, carrying out vacuum degassing, freeze drying and cold pressing to obtain a porous ceramic prefabricated part; S3, placing a magnesium alloy ingot on the porous ceramic prefabricated part, placing the magnesium alloy ingot and the porous ceramic prefabricated part in the mold; and S4, transferring the mold into a vacuum resistance furnace, heating to 500 DEG C to 600 DEG C at a speed of 3 DEG C/min in a protective atmosphere, preserving heat; then heating to 800 DEG C to 900 DEG C at the speed of 5 DEG C/min, preserving heat, after melting the magnesium alloy ingot, infiltrating the porous ceramic prefabricated part and wrapping the outer surface of the porous ceramic prefabricated part with the molten magnesium alloy ingot. By means of the reparation method of the reinforced magnesium-based composite material, the infiltration rate of the molten metal to the ceramic prefabricated part is increased.

Description

technical field [0001] The invention belongs to the technical field of preparation of light metal-based composite materials, and in particular relates to a reinforced magnesium-based composite material and a preparation method thereof. Background technique [0002] The fastest-growing light metal matrix composites are aluminum matrix composites, but because magnesium has a lower density than aluminum and has higher specific strength and specific stiffness, magnesium matrix composites have become the second choice after aluminum matrix composites. More competitive light metal matrix composites. [0003] Magnesium-based composites are mainly based on magnesium compounds, cast magnesium or magnesium alloys, and carbides (such as SiC, B 4 C, etc.), borides (such as TiB 2 etc.), oxide particles (such as MgO, Al 2 o 3 etc.), intermetallic compounds, graphene oxide, carbon (graphite) fibers, helical carbon nanotubes, etc. are composite materials formed by the combination of rei...

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
IPC IPC(8): C22C1/10C22C23/00C22C32/00
CPCC22C1/1015C22C1/1036C22C23/00C22C32/0063C22C1/1021C22C1/1073
Inventor 张聪正梁晨
Owner NANYANG NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap