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Method for connecting carbon fiber reinforced aluminum-based composite with metal

A technology for strengthening aluminum-based and composite materials, which is applied in the field of connection between composite materials and metals. It can solve problems such as severe interface reaction, high heating temperature, and deterioration of base material performance, and achieve good connection quality.

Inactive Publication Date: 2013-09-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the overall heating temperature of the traditional welding method is high, which leads to serious interfacial reaction between the reinforced phase carbon fiber and aluminum, and deteriorates the performance of the base material, and provides a method for connecting carbon fiber reinforced aluminum matrix composite materials and metals. method

Method used

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  • Method for connecting carbon fiber reinforced aluminum-based composite with metal
  • Method for connecting carbon fiber reinforced aluminum-based composite with metal
  • Method for connecting carbon fiber reinforced aluminum-based composite with metal

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specific Embodiment approach 1

[0012] Specific embodiment one: a kind of method of connecting carbon fiber reinforced aluminum matrix composite material and metal of this embodiment is carried out according to the following steps: 1, the aluminum powder of 54~58 parts by weight, the nickel powder of 8~10 parts Powder and 33-37 parts of copper oxide powder are mixed evenly, placed in the ball mill tank, and the balls are put into the ball at a mass ratio of 5:1. Under the condition of argon protection, the Speed ​​ball milling for 2 to 3 hours to obtain the mixed powder; 2. Press the mixed powder obtained in step 1 into an intermediate laminate compact with a relative density of 60% to 80% and a thickness of 1 to 3mm, and seal it for storage; 3. The obtained in step 2 The intermediate laminated blank is placed between the carbon fiber reinforced aluminum matrix composite material and the metal to assemble a "sandwich" assembly, and then the assembly is clamped and placed in a vacuum furnace, and heated to 500...

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment is different from Embodiment 1 in that: the aluminum powder in step 1 is 325-1000 mesh, the nickel powder is 325-1000 mesh, and the copper oxide powder is 325-1000 mesh. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 3: This embodiment differs from Embodiments 1 to 2 in that the relative density described in step 2 is the relative density measured at 20°C. Others are the same as the specific embodiment 1 to 2.

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Abstract

The invention discloses a method for connecting a carbon fiber reinforced aluminum-based composite with a metal, relating to a method for connecting the composite with the metal. The invention solves the problem of serious interface reaction between reinforced phase carbon fibers and aluminum and degraded property of a base material due to high integral heating temperature of the traditional welding method. The method comprises the steps of: firstly, weighing aluminum powder, mixing with copper oxide powder, ball-grinding to obtain mixed powder; secondly, making the mixed powder into an intermediate layer with a relative density being 60 percent to 80 percent and a thickness being 1-3mm, storing in a sealing manner; and thirdly, placing the intermediate layer between the carbon fiber reinforced aluminum-based composite and the metal for assembling a sandwich, heating to 500 DEG C under the condition of the pressure being 5MPa, preserving the temperature for 5-10min, and furnace-cooling to room temperature. The invention can realize the connection of the carbon fiber reinforced aluminum-based composite with the metal at a temperature of 500 DEG C, and is applied to the field of connecting the aluminum-based composite with the metal. The joint strength can reach 50.7MPa.

Description

technical field [0001] The invention relates to a method for connecting composite materials and metals. Background technique [0002] Aluminum matrix composites have high specific strength, specific stiffness, axial tensile strength and wear resistance, excellent high temperature resistance and low thermal expansion coefficient, good electrical conductivity, thermal conductivity, fatigue resistance, and good resistance to moisture or radiation It is an ideal lightweight and high-strength material due to its good dimensional stability in the environment. The density of carbon fiber reinforced aluminum matrix composite is lower than that of aluminum alloy, but its modulus is 2 to 4 times higher than that of aluminum alloy. At 250°C, its tensile strength can still maintain 81% of the tensile strength at room temperature, and its fatigue strength is 38% higher than that of aluminum alloy. %. The manufactured components have light weight, good rigidity, small wall thickness and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04
Inventor 李卓然张相龙徐晓龙刘羽利肇鹤刘政平
Owner HARBIN INST OF TECH
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