Method for preparing continuous carbon fiber reinforced aluminum matrix composite

A technology for strengthening aluminum matrix and composite materials, which is applied in the field of aluminum matrix composite material manufacturing, can solve problems such as complex preparation methods and processes, and achieve the effects of improved mechanical properties, less requirements for process equipment, and improved production efficiency

Active Publication Date: 2019-10-18
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing continuous Cf / Al composite molding methods are mainly divided into pressure infiltration and ultrasonic vibration liquid infiltration method, but the above methods are limited to layered and plate materials, and the material properties are directional, and the preparation methods and processes are relatively complex. complex

Method used

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  • Method for preparing continuous carbon fiber reinforced aluminum matrix composite
  • Method for preparing continuous carbon fiber reinforced aluminum matrix composite
  • Method for preparing continuous carbon fiber reinforced aluminum matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for preparing a continuous carbon fiber reinforced aluminum matrix composite material of the present invention is specifically implemented according to the following steps:

[0051] Step 1, pre-processing

[0052] Put an appropriate amount of bare carbon fiber in a muffle furnace for high-temperature burning treatment to obtain degummed carbon fiber, and place the degummed carbon fiber in HNO with a mass fraction of 20% 3 Stir in the solution evenly, take it out and put it in a NaOH solution with a mass fraction of 10% for neutralization treatment and stir evenly, then perform sensitization and activation treatment on it, and place it in a constant temperature water bath to obtain a carbon fiber solution to be plated;

[0053] Among them, the temperature of high temperature burning treatment is 430°C, and the time is 60min; HNO 3 The volume ratio with NaOH is 1:2.

[0054] The activation process is as follows:

[0055]Put hydrochloric acid with a mass fracti...

Embodiment 2

[0067] The preparation method of the continuous carbon fiber reinforced aluminum matrix composite material is the same as that of Example 1, except that:

[0068] In the pretreatment, the high-temperature burning temperature is 450°C;

[0069] In the plating step, the mass ratio of copper sulfate: formaldehyde: potassium sodium tartrate is 10:2.34:60, and the plating temperature is 60° C.; the pH of the copper-plated carbon fiber solution is 12.0;

[0070] In blank preparation, the mass ratio of copper-plated carbon fiber and aluminum powder is 1:999;

[0071] In step 4, the pressure of the compressor is 600KN, and the holding time is 1min;

[0072] In step 5, the pressure of plasma sintering is 4.0T, and the temperature is 450°C.

Embodiment 3

[0074] The preparation method of the continuous carbon fiber reinforced aluminum matrix composite material is the same as that of Example 1, except that:

[0075] In the pretreatment, the high-temperature burning temperature is 450°C;

[0076] In the plating step, the mass ratio of copper sulfate: formaldehyde: potassium sodium tartrate is 15:2.34:40, and the plating temperature is 65°C; the pH of the copper-plated carbon fiber solution is 12.25;

[0077] In blank preparation, the mass ratio of copper-plated carbon fiber and aluminum powder is 1:499; the binder is glycerin ethanol solution;

[0078] In step 4, the pressure of the compressor is 400KN, and the pressure holding time is 1.5min;

[0079] In step 5, the pressure of plasma sintering is 4.5T, and the temperature is 480°C.

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Abstract

The invention discloses a method for preparing a continuous carbon fiber reinforced aluminum matrix composite. The method for preparing the continuous carbon fiber reinforced aluminum matrix compositecomprises the steps that after pretreatment and plating application are conducted on bare carbon fiber in sequence, work blanks are then prepared; an appropriate number of work blanks are taken and placed in extrusion dies; a compressor is adopted, the work blanks are formed through extrusion, and prefabricated blocks are acquired; the prefabricated blocks are placed in a plasma sintering furnace, and the continuous carbon fiber reinforced aluminum matrix composite is acquired after sintering. The preparation technology of the continuous carbon fiber reinforced aluminum matrix composite is simple; besides, carbon fiber is uniformly dispersed in the matrix, and material properties are isotropic; and in addition, various kinds of physical properties of the composite are improved, and meanwhile, the mechanical property of the composite is improved conspicuously.

Description

technical field [0001] The invention belongs to the technical field of manufacturing aluminum-based composite materials, and in particular relates to a preparation method of continuous carbon fiber reinforced aluminum-based composite materials. Background technique [0002] The reinforcement phase of aluminum matrix composites mainly includes particles, whiskers (or short fibers) and continuous fibers. Particles, whiskers and short carbon fibers are the preferred reinforcements, which have the advantage of being easy to disperse, but their segregation and sharpening are likely to cause problems such as stress concentration, which greatly affects the performance of composite materials; continuous fibers have high stiffness, strength and toughness It is widely used in the field of continuous fiber reinforced metal matrix composites. The continuous Cf / Al composite material is mainly composed of aluminum matrix, reinforcing fiber and Cf / Al interface, in which the continuous fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/04C22C47/14C22C49/06C22C101/10
CPCC22C47/04C22C47/14C22C49/06
Inventor 郭莹刘艺
Owner SHAANXI SCI TECH UNIV
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