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High-interface-strength Cf/Mg composite material and preparation method thereof

A composite material and interface strength technology, applied in the field of lightweight structural materials, can solve the problems of low interface bonding strength, achieve high modulus, improve bending performance, and increase interlayer shear strength

Active Publication Date: 2015-03-25
哈尔滨龙卓新材料合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is to solve existing C f / Mg composites with low interfacial bonding strength, and provide a C with high interfacial strength f / Mg composite material and preparation method thereof

Method used

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  • High-interface-strength Cf/Mg composite material and preparation method thereof
  • High-interface-strength Cf/Mg composite material and preparation method thereof

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of high interfacial strength C of this embodiment f The / Mg composite material is made of 50% to 65% of carbon fiber and the rest of magnesium yttrium alloy by volume fraction; wherein the magnesium yttrium alloy is made of 1% to 10% of pure yttrium and the balance of pure magnesium by mass fraction production.

[0019] The rare earth-containing interface layer Mg of the present embodiment 2 C of Y f / Mg composite material, compared with the composite material without adding rare earth element Y, the bending performance is increased by 22.1%, the interlaminar shear strength of the composite material is increased by 108.6%, and the comprehensive mechanical properties of the composite material are significantly improved.

[0020] The rare earth Y-containing element C of this embodiment f / Mg composite material has the advantages of low density, high strength, high modulus, low expansion, low cost, etc., and the matching of transverse and...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that: the magnesium-yttrium alloy is made of 4% pure yttrium and the balance pure magnesium by mass fraction. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the magnesium-yttrium alloy is made of 6% pure yttrium and the balance pure magnesium by mass fraction. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a high-interface-strength Cf / Mg composite material and a preparation method thereof, belongs to the field of light structural materials and particularly relates to a high-interface-strength Cf / Mg composite material and a preparation method thereof. The high-interface-strength Cf / Mg composite material disclosed by the invention is used for solving the problem that an existing Cf / Mg composite material is low in interface bonding strength. The high-interface-strength Cf / Mg composite material is prepared from carbon fibers and magnesium-yttrium alloy, wherein the magnesium-yttrium alloy is prepared from pure yttrium alloy and pure magnesium. The preparation method comprises the following steps: (1) preparing a carbon fiber reinforcement prefabricated member by using a fiber winding machine; (2) smelting pure magnesium and pure yttrium to obtain a magnesium-yttrium alloy melt solution; (3) pressing the carbon fiber reinforcement prefabricated member into a cavity of a forming mold, then filling the magnesium-yttrium alloy melt solution into the forming mold and then pressing to obtain a fiber reinforced magnesium-based composite material; and (4) cooling the fiber reinforced magnesium-based composite material to room temperature along with the mold, demolding and then mechanically removing excess magnesium-yttrium alloy from the edge to obtain the Cf / Mg composite material.

Description

technical field [0001] The invention belongs to the field of lightweight structural materials, in particular to a C f / Mg composite material and its preparation method. Background technique [0002] C f As a new type of structural material, the / Mg composite material has the characteristics of light weight, high specific stiffness and high specific strength compared with traditional magnesium alloys, and has attracted the attention of researchers from various countries. Compared with resin-based composite materials, it has excellent properties such as no moisture absorption, no aging, space particle radiation resistance, low thermal expansion coefficient, good dimensional stability and good mechanical processing. Based on the above advantages, its military and civilian backgrounds are very extensive. [0003] The wettability between carbon fiber and magnesium is poor, and the magnesium carbon compound MgC generated 2 and Mg 2 C 3 Therefore, the bottleneck restricting t...

Claims

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Application Information

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IPC IPC(8): C22C49/00C22C47/12C22C101/10
Inventor 张少锋武高辉裴日生陈国钦芶华松姜龙涛修子扬张强康鹏超
Owner 哈尔滨龙卓新材料合伙企业(有限合伙)
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