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Preparation method and device for fiber reinforced metal matrix composite

A composite material and fiber-reinforced technology, which is applied in the field of spray deposition fiber-reinforced metal-matrix composite pipe preparation, can solve problems such as difficult to control the interface reaction between reinforcing fiber and metal matrix, difficult to prepare large-scale composite materials, and unfavorable performance of composite materials. Achieve fine microstructure, reduce oxygen content, and fast cooling rate

Active Publication Date: 2017-03-29
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid-state method is complex and difficult to prepare large-scale composite materials. The impregnation method is also complicated, and it is difficult to control the interface reaction between the reinforcing fiber and the metal matrix. The coating method is also complicated and takes a long time to heat, which is not conducive to the performance of the composite material.

Method used

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  • Preparation method and device for fiber reinforced metal matrix composite
  • Preparation method and device for fiber reinforced metal matrix composite
  • Preparation method and device for fiber reinforced metal matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]When using the preparation device of the present invention to prepare fiber-reinforced metal matrix composite materials, the metal or alloy is first melted, and the melting temperature is about 300-350° C. higher than the melting point of the alloy. The molten metal is scooped into a crucible coated with zinc oxide coating, and the crucible is preheated in advance; the bottom of the crucible is connected to a nozzle, and the inner diameter of the nozzle is 3.0-4.5mm. The nozzle is inserted into the atomizer, and the annular gap gas atomization method is adopted. The atomization gas pressure is 0.6-0.8MPa. It is atomized by nitrogen gas. The atomization cone angle is 30°. The high-pressure atomization gas is generated at the nozzle outlet. Negative pressure sucks out the molten metal in the crucible. When the molten metal is sucked out through the nozzle, it is hit and broken by the high-pressure atomizing gas and atomized into hundreds of micron metal droplets. The lower...

Embodiment 2

[0041] The fiber net used in this embodiment is a carbon fiber net with 1000 tows produced by Toray and a mesh hole of 5 mm × 5 mm. The crucible mobile multi-layer atomization deposition equipment is used, and Al-7Si alloy is used as the substrate. First, the matrix alloy is melted in a well-type furnace at a melting temperature of 980°C, which is about 320°C higher than the melting point of the alloy. The molten metal is scooped into the graphite crucible coated with zinc oxide coating on the surface to prevent the aluminum alloy solution from reacting with the graphite crucible. The graphite crucible has a volume of 1.5L. A graphite nozzle is connected to the bottom of the crucible, and the inner diameter of the nozzle is 3.2mm. The graphite nozzle is inserted into the atomizer. The atomizer is made of 30Cr alloy steel. It adopts the annular gap gas atomization method, the atomization gas pressure is 0.8MPa, and the atomization gas is atomized with nitrogen gas. The atomizi...

Embodiment 3

[0055] When the preparation device of the present invention is used to prepare C fiber reinforced aluminum matrix composite material plates:

[0056] The atomization pressure of the alloy melt is 0.8MPa, the atomization cone angle is 30°, and the deposition height is 200mm;

[0057] The carbon fiber tow of the C fiber mesh is 1000 per bundle, and the mesh is 5mm×5mm;

[0058] When using the above-mentioned fiber reinforced metal matrix composite material preparation device to prepare C fiber reinforced aluminum matrix composite material sheet, the heating temperature of the deposition base is 500 °C, and the temperature is kept for 30 minutes. The scanning period of the atomizer is 15 s. Rotate 4.8°, through the layer-by-layer deposition of aluminum alloy on the C fiber mesh, the aluminum matrix composite with uniform distribution of C fibers was prepared.

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Abstract

The invention provides a preparation method for a fiber reinforced metal matrix composite. Good bonding between a matrix alloy and a fiber mesh and between the matrix alloy and a settled layer is realized by adopting the preparation method. The invention further provides a preparation device for realizing the preparation method and application of the preparation device. The preparation device can realize thickness control over a metal matrix layer between fiber layers and uniform distribution of fibers or enhancement of graded fibers. The preparation device can be used for preparing molten-state metal alloys of an aluminium alloy, a tin alloy, a lead alloy, a copper alloy, an iron alloy and a titanium alloy, and tubular bases made of an aluminium-base alloy, a copper-base alloy, an iron-base alloy, a tin-base alloy and a lead-base alloy. The preparation method and device can realize regulation of the thickness of the metal matrix layer between the fiber layers; the shorter the rotation interval time of a matrix rotating shaft is, the smaller the thickness of the metal matrix layer is, and otherwise, the larger the thickness of the metal matrix layer is; and progressive regulation of the rotation interval time can be realized by a controller, and enhancement of the graded fibers is conveniently realized.

Description

technical field [0001] The invention relates to fiber-reinforced metal-matrix composite materials, in particular to a preparation method and equipment for spray-deposited fiber-reinforced metal-matrix composite material pipes. Background technique [0002] The preparation methods of continuous fiber reinforced metal matrix composites can be divided into three categories, namely solid state method, liquid state method and coating hot pressing method. The solid-state method mixes and arranges metal powder or metal foil and fibers together in a certain content, distribution, and direction according to the design requirements, and then pressurizes and heats to bond the metal matrix and reinforcement together to form a composite material. The entire solid-state composite process is at a relatively low temperature, the metal matrix and the reinforcing phase are both in the solid state, and the interface reaction between the components is not serious. The liquid method refers to t...

Claims

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Application Information

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IPC IPC(8): C22C47/18C22C49/06C22C49/14C22C101/10
CPCC22C47/18C22C49/06C22C49/14
Inventor 贺毅强周海生冯立超陈志钢
Owner HUAIHAI INST OF TECH
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