Graphene, aluminum and silicon carbide composite material and preparation method and application thereof

A graphene-aluminum-silicon carbide and composite material technology is applied to graphene-aluminum-silicon carbide composite materials and their preparation and application fields, and can solve the problems of control difficulty, safety, material property anisotropy, and insufficient mixing.

Active Publication Date: 2017-05-17
BEIJING BAOHANG ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of simple forming and no need for subsequent complicated machining, but there are problems such as uneven distribution of reinforcement phases and pore defects, which lead to anisotropy in material properties, large surface, and inability to control the volume of silicon carbide. Defects such as content of other reinforcing phases (such as graphene)
Moreover, the method prepares graphene

Method used

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  • Graphene, aluminum and silicon carbide composite material and preparation method and application thereof
  • Graphene, aluminum and silicon carbide composite material and preparation method and application thereof
  • Graphene, aluminum and silicon carbide composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0065] Example 1 Preparation of Graphene Aluminum Silicon Carbide Composite

[0066] The composition of graphene aluminum silicon carbide composite material is:

[0067]

[0068] The preparation method of graphene aluminum silicon carbide composite material includes the following steps:

[0069] 1. Disperse 1000g graphene ultrasonically (frequency 50Hz, ultrasonic 40min) evenly into 1000ml absolute ethanol to prepare a graphene ethanol dispersion;

[0070] 2. Weigh 11.5kg of aluminum alloy powder and 3.5kg of silicon carbide, put them into the mixer in turn, mix for 30min at 500rpm; after mixing for another 1h at 850rpm, the aluminum silicon carbide mixed powder is prepared and divided into five equal parts Copies

[0071] 3. Measure 0ml, 15ml, 30ml, 45ml, 60ml of graphene ethanol dispersion, respectively spray the graphene ethanol dispersion into five equal parts of aluminum silicon carbide mixed powder under 900rpm conditions, and mix at 900rpm After 2h, a graphene aluminum silicon ...

Example Embodiment

[0075] Example 2 Preparation of Graphene Aluminum Silicon Carbide Composite

[0076] The composition of graphene aluminum silicon carbide composite material is:

[0077]

[0078] The preparation method of graphene aluminum silicon carbide composite material includes the following steps:

[0079] 1. Disperse 1000g graphene ultrasonically (frequency 60Hz, ultrasonic 45min) uniformly into 1000ml absolute ethanol to prepare a graphene ethanol dispersion;

[0080] 2. Weigh 2.5kg aluminum alloy powder and 0.5kg silicon carbide, put them into the mixer in turn, mix at 600rpm for 30min; mix at 950rpm for another 1h to obtain aluminum silicon carbide mixed powder;

[0081] 3. Under the condition of 950 rpm, spray 30ml of graphene ethanol dispersion into the aluminum silicon carbide mixed powder by atomizing spray, and mix for 2 hours at 950 rpm to obtain the graphene aluminum silicon carbide mixed dispersion;

[0082] 4. After collecting the graphene-aluminum-silicon carbide mixed dispersion, dr...

Example Embodiment

[0085] Example 3 Preparation of Graphene Aluminum Silicon Carbide Composite

[0086] The composition of graphene aluminum silicon carbide composite material is:

[0087]

[0088] The preparation method of graphene aluminum silicon carbide composite material includes the following steps:

[0089] 1. Disperse 1000g of graphene ultrasonically (ultrasonic frequency 70Hz, ultrasonic 30min) into 1000ml absolute ethanol to prepare graphene ethanol dispersion;

[0090] 2. Weigh 2.3kg aluminum alloy powder and 0.7kg silicon carbide, put them into the mixer in turn, mix for 30min at 650rpm; after mixing at 1000rpm for 1h, the aluminum silicon carbide mixed powder is prepared;

[0091] 3. Under the condition of 1000 rpm, spray 30ml of graphene ethanol dispersion into the aluminum silicon carbide mixed powder by atomizing spray, and mix at 1000 rpm for 2 hours to obtain the graphene aluminum silicon carbide mixed dispersion;

[0092] 4. After collecting the graphene-aluminum-silicon carbide mixed d...

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Abstract

The invention relates to a graphene, aluminum and silicon carbide composite material and a preparation method thereof. The composite material is prepared from of constituents of 10-40 vol% of silicon carbide, 0.5-2 wt% of graphene, and the balance aluminum alloy. The composite material is prepared through a powder metallurgic method and can be obtained through proportioning, powder mixing, packaging, vacuum degassing and hot isostatic forming. The composite material has the advantages of low density, low weight, high hardness, high tensile strength and the like, the strength, fatigue resistance and toughness of the material are remarkably improved through addition of a proper amount of graphene, and thus the composite material has broader application prospects in the field of structural pieces.

Description

technical field [0001] The invention relates to a graphene-aluminum-silicon carbide composite material, a preparation method and an application thereof. Background technique [0002] Aluminum is the second largest metal after steel. It has the advantages of lightness, good strength, good ductility, strong conductivity, and good corrosion resistance. It is widely used in construction, packaging, electronics, transportation and other industries, aviation, Industries such as defense and automotive are increasingly demanding aluminum. [0003] Aluminum silicon carbide is a metal matrix composite material, which combines the different advantages of silicon carbide ceramics and metal aluminum, and has the advantages of low density, light weight, high hardness and high tensile strength. However, some structural parts with special requirements or structural parts used in special working environments have higher requirements on the performance of aluminum alloy and aluminum silicon ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C32/00C22C1/05B22F3/15B22F1/00
CPCB22F1/0003B22F3/15B22F2998/10C22C1/05C22C21/00C22C32/0047
Inventor 李振民刘干孟庆宇
Owner BEIJING BAOHANG ADVANCED MATERIALS CO LTD
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