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a kind of al 2 o 3 /fe 3 o 4 Preparation method of @gns hybrid reinforced aluminum matrix composite

A technology for composite materials and reinforced aluminum matrix, which is applied in the field of modification and preparation of aluminum matrix composite materials, to avoid agglomeration, increase shear friction, and facilitate large-area application

Active Publication Date: 2022-03-08
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at improving the preparation method of aluminum-based composite materials in view of the existing deficiencies, and solves the problem of interface bonding between the reinforcement body and the aluminum matrix

Method used

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  • a kind of al <sub>2</sub> o <sub>3</sub> /fe <sub>3</sub> o <sub>4</sub> Preparation method of @gns hybrid reinforced aluminum matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the hybrid reinforced aluminum matrix composite material of the present invention is prepared by the following method. Step 1: Connect the grinding ball with K 2 FeO 4 , Al, and graphite are put into polyurethane for dry ball milling, and the mass ratio is K 2 FeO 4 : Al: Graphite = 4:5:1, the grinding ball is a zirconium ball, the rotating speed is 220r / min, and the ball milling time is 8h; the second step: after the ball milling is finished, the obtained composite powder is washed 5 times with deionized water, filtered, and placed in Vacuum drying at 120°C for 2 hours to obtain Al 2 o 3 / Fe 3 o 4 @GNS composite powder; the third step: the dried Al 2 o 3 / Fe 3 o 4 @GNS composite powder is annealed at 450°C and kept for 3.5 hours to obtain Al with better crystallinity 2 o 3 / Fe 3 o 4 @GNS composite powder; Step 4: Grind and refine the composite powder obtained in Step 3, and the grinding time is 5 hours; Step 5: Mill the Al powder...

Embodiment 2

[0027] The preparation method of the hybrid reinforced aluminum matrix composite material of the present invention is prepared by the following method. Step 1: Connect the grinding ball with K 2 FeO 4 , Al, and graphite are put into polyurethane for dry ball milling, and the mass ratio is K 2 FeO 4 : Al: Graphite=3.6:5:1.3, the grinding ball is a zirconium ball, the rotating speed is 260r / min, and the ball milling time is 9h; the second step: after the ball milling finishes, the gained composite powder is washed 3 times with deionized water, filtered, and Vacuum drying at 180°C for 3h to obtain Al 2 o 3 / Fe 3 o 4 @GNS composite powder; the third step: the dried Al 2 o 3 / Fe 3 o 4 @GNS composite powder is annealed at a temperature of 490°C and held for 5.5 hours to obtain Al with better crystallinity 2 o 3 / Fe 3 o 4 @GNS composite powder; Step 4: Grind and refine the composite powder obtained in Step 3, and the grinding time is 4 hours; Step 5: Mill the Al powder ...

Embodiment 3

[0029] The preparation method of the hybrid reinforced aluminum matrix composite material of the present invention is prepared by the following method. Step 1: Connect the grinding ball with K 2 FeO 4 , Al, and graphite are put into polyurethane for dry ball milling, and the mass ratio is K 2 FeO 4 : Al: graphite=3.9:5.5:0.8, the grinding ball is a zirconium ball, the rotating speed is 290r / min, and the ball milling time is 11h; the second step: after the ball milling finishes, the gained composite powder is washed 4 times with deionized water, filtered, and Vacuum drying at 170°C for 2.5h to obtain Al 2 o 3 / Fe 3 o 4 @GNS composite powder; the third step: the dried Al 2 o 3 / Fe 3 o 4 @GNS composite powder is annealed at a temperature of 410°C and held for 3.5 hours to obtain Al with better crystallinity 2 o 3 / Fe 3 o 4 @GNS composite powder; Step 4: Grind and refine the composite powder obtained in Step 3, and the grinding time is 4.5 hours; large particles to ...

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Abstract

The invention discloses an Al 2 o 3 / Fe 3 o 4 @GNS hybrid reinforced aluminum matrix composite and its preparation method. The preparation method is: mix K 2 FeO 4 , Al, and graphite are dry-milled, washed with deionized water, filtered, and dried to obtain Al 2 o 3 / Fe 3 o 4 Anchor graphene composite powder, denoted as Al 2 o 3 / Fe 3 o 4 @GNS composite powder; Al after drying 2 o 3 / Fe 3 o 4 @GNS composite powder is annealed and then ground; the Al powder is ball-milled separately, and then combined with Al 2 o 3 / Fe 3 o 4 @GNS composite powder is ball milled and mixed again; the mixed powder is cold pressed; put into a tube furnace for vacuum sintering to obtain Al 2 o 3 / Fe 3 o 4 @GNS Reinforced Aluminum Matrix Composites. The present invention makes Al 2 o 3 / Fe 3 o 4 The @GNS hybrid reinforcement is uniformly dispersed in the aluminum matrix, which greatly improves the physical and mechanical properties of the aluminum matrix composite.

Description

technical field [0001] The present invention relates to an Al 2 o 3 / Fe 3 o 4 @GNS Hybrid reinforced aluminum matrix composite material and its preparation method belong to the field of modification of aluminum matrix composite material and its preparation. Background technique [0002] In recent years, due to the excellent mechanical and physical properties of aluminum matrix composites such as high specific strength, specific stiffness, and low thermal expansion coefficient, they have played an irreplaceable role in the industrial, automotive, and aerospace fields. The dependence on aluminum matrix composites is also growing. With the extensive and in-depth research on aluminum matrix composites, a variety of processing technologies for reinforced aluminum matrix composites have been explored. It is common to use the effective combination of reinforcements, aluminum and aluminum alloys to improve the performance of aluminum matrix composites. processing technology. P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/05B22F9/04B22F3/02B22F3/10B22F3/24
CPCC22C21/00C22C32/00C22C1/05B22F9/04B22F3/02B22F3/1007B22F3/24B22F2009/043B22F2003/248
Inventor 刘和平杨恒喆张森铭孙凤儿郭支明
Owner ZHONGBEI UNIV
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