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Magnesium alloy compound material enhanced by mixed carbon fibre and method of producing the same

A composite material and fiber-reinforced technology, applied in the field of composite materials, can solve the problems of small simultaneous adjustment, narrow performance adjustment range, high equipment requirements, etc., and achieve the effects of low energy consumption, low production cost, and few procedures

Inactive Publication Date: 2008-05-21
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the above work is that a single carbon fiber is used to reinforce the magnesium alloy, and the performance of the composite material is mainly adjusted by the volume fraction of the fiber, and the performance adjustment range is narrow, especially the degree of simultaneous adjustment of the strength and modulus is small; High pressure and high requirements for equipment

Method used

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  • Magnesium alloy compound material enhanced by mixed carbon fibre and method of producing the same

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Experimental program
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Effect test

Embodiment 1

[0013] The strength of high-strength carbon fiber is 5000MPa, the modulus is 200GPa, the modulus of high-modulus carbon fiber is 550GPa, and the strength is 3800MPa. The volume ratio of high-strength carbon fiber and high-modulus carbon fiber is 3:1. After mixing the two carbon fibers Accounting for 50% of the volume of the entire composite material, the mass percentages of alloying elements in the magnesium alloy matrix of the composite material are: Al: 6%, Zn: 0.5%, Sb: 0.1%, Sn: 0.1%, Be: 0.2%, Ti: 0.1 %, Si: 0.1%, Sr: 1%, and the rest is Mg. Immerse the high-strength carbon fiber and high-modulus carbon fiber in an aqueous solution with a mass concentration of 1% zirconium fluoride salt for 2 minutes, then take out the above-mentioned fiber and dry it. The volume ratio of high-strength carbon fiber and high-modulus carbon fiber is about 3:1. Lay alternately in the mold cavity, two fiber bundles are laid in parallel to form a prefabricated form, and then the matrix magnesi...

Embodiment 2

[0017] The strength of the high-strength carbon fiber is 5500MPa, and the modulus is 300GPa. The modulus of the high-modulus carbon fiber is 600GPa, and the strength is 4000MPa. The volume ratio of the high-strength carbon fiber and the high-modulus carbon fiber is 1:3. The two carbon fibers After mixing, it accounts for 70% of the volume of the entire composite material. The mass percentages of alloying elements in the magnesium alloy matrix of the composite material are: Al: 9%, Zn: 1%, Sb: 2%, Sn: 1.2%, Be: 1.2%, Ti : 0.5%, Si: 0.5%, Sr: 1%, and the rest is magnesium. Immerse the high-strength carbon fiber and high-modulus carbon fiber in an aqueous solution with a mass concentration of fluoride-zirconium salt of 2% for 6 minutes, then take out the above-mentioned fiber and dry it. The volume ratio of high-strength carbon fiber and high-modulus carbon fiber is about 1:3. Lay alternately in the mold cavity, two fiber bundles are laid in parallel to form a prefabricated shape...

Embodiment 3

[0021] The strength of the high-strength carbon fiber is 5200MPa, and the modulus is in the range of 150GPa. The modulus of the high-modulus carbon fiber is 580GPa, and the strength is 3900MPa. After the two kinds of carbon fibers are mixed, they account for 60% of the volume of the entire composite material. The composite material magnesium alloy The mass percent of the alloying elements of the matrix is: Al: 8%, Zn: 0.9%, Sb: 1%, Sn: 1%, Be: 1%, Ti: 0.3%, Si: 0.3%, Sr: 0.5%, and the rest for magnesium. Immerse the high-strength carbon fiber and high-modulus carbon fiber in an aqueous solution with a mass concentration of 1.5% zirconium fluoride salt for 4 minutes, then take out the above-mentioned fiber and dry it. The volume ratio of high-strength carbon fiber and high-modulus carbon fiber is about 1:1 Lay alternately in the mold cavity. The adjacent space around the high-strength fiber is high-modulus fiber. The two fiber bundles are laid in parallel to form a prefabricate...

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Abstract

A reinforced magnesium alloy composite material which is mixed with carbon fiber is characterized in that the composite material takes magnesium alloy as the matrix and is reinforced by mixing high-strength carbon fiber and high-modulus carbon fiber; the strength of the high-strength carbon fiber is 5000 to 5500 MPa and the modulus is between 200 to 300 GPa; the modulus of the high-modulus carbon fiber is 550 to 600 GPa and the strength is 3800 to 4000 MPa; the volume ratio of the high-strength carbon fiber and the high-modulus carbon fiber is 3:1 to 1:3; the two mixed carbon fibers occupy 50 percent to 70 percent of the whole volume of the composite material; the mass percents of the alloy elements in the composite material magnesium alloy matrix are: Al which is more than or equal to 6 percent and less than or equal to 9 percent, Zn which more than or equal to 0.5 percent and less than or equal to 1 percent, Sb which more than 0 percent and less than or equal to 2 percent, Be which is more than or equal to 0.2 percent and less than or equal to 1.2 percent, Ti which is more than 0 percent and less than or equal to 0.5 percent, Si which is more than 0 percent and less than or equal to 0.5 percent, Sr which is more than 0 percent and less than or equal to 1 percent and the rest is magnesium. The preparation method of the magnesium-based composite material is provided with a small number of procedures and simple process; the preparation needs no machine and the energy consumption and the production cost are low.

Description

1. Technical field [0001] The invention belongs to the technical field of composite materials, in particular to a mixed carbon fiber reinforced magnesium alloy composite material and a preparation method thereof. 2. Background technology [0002] Existing technology: At present, magnesium alloys have been widely used in production because of their high specific strength and specific stiffness. Metal magnesium is light in weight. If carbon fiber is embedded in magnesium alloy, it can form a lightweight and higher-performance magnesium-based fiber-reinforced composite material, which can be used in a wider range of fields, such as aerospace, machinery, construction, etc. In 2000, Volume 2, Issue 6 of Advanced Engineering Materials magazine published C. Koener's article on carbon fiber reinforced magnesium alloy. The carbon fiber used is a single material, and the pressure casting infiltration method is adopted, and the infiltration pressure is 100 atmospheres. In 2006, Journa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/04C22C47/02C22C47/14
Inventor 赵浩峰
Owner NANJING UNIV OF INFORMATION SCI & TECH