Method for synthesizing metal matrix composition using metal reaction under the coupling action of magnetic field and ultrasonic field

A composite material and ultrasonic field technology, applied in the field of synthesis and preparation of new composite materials, can solve problems such as unsatisfactory effects, and achieve improved dynamic conditions and good composite effects

Active Publication Date: 2009-03-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the effect of a single applied electromagnetic field or ultrasonic field on the in situ reaction synthesis of particle-reinforced metal matrix composites is still unsatisfactory.

Method used

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  • Method for synthesizing metal matrix composition using metal reaction under the coupling action of magnetic field and ultrasonic field
  • Method for synthesizing metal matrix composition using metal reaction under the coupling action of magnetic field and ultrasonic field
  • Method for synthesizing metal matrix composition using metal reaction under the coupling action of magnetic field and ultrasonic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: Preparation under the coupling action of strong pulsed magnetic field and ultrasonic field (Al 3 Zr (s) +ZrB 2(s) ) particle reinforced Al-based composites

[0043] Raw material: base metal: pure Al; reaction salt: K 2 ZrF 6 +KBF 4 Powder, refining degassing agent and slag removal agent;

[0044] The preparation process is divided into two steps:

[0045] (1): Metal smelting and powder preparation:

[0046] 50Kg of pure Al is melted in a 60kW resistance furnace and heated up to 900°C for degassing and slag removal. All reagents used are fully dried at 250°C to 300°C, of ​​which K 2 ZrF 6 +KBF 4 , ground into fine powder (particle size less than 200 mesh), weighed and wrapped with aluminum foil for later use, K 2 ZrF 6 +KBF 4 The powder is added in an amount of 20% of the weight of the metal.

[0047] (2): In situ reaction synthesis to prepare composite material melt:

[0048] The molten metal that has been refined and meets the requirements ...

Embodiment 2

[0050] Embodiment 2: Preparation under the coupling effect of high-frequency oscillating magnetic field and ultrasonic field (Al 3 Zr (s) +ZrB 2(s) ) particle reinforced Al-based composites

[0051] Raw material: base metal: pure Al; reaction salt: K 2 ZrF 6 +KBF 4 Powder, refining degassing agent and slag removal agent;

[0052] The preparation process is divided into two steps:

[0053] (1): Metal smelting and powder preparation:

[0054] 50Kg of pure Al is melted in a 60kW industrial frequency aluminum melting furnace and heated up to 900°C for degassing and slag removal. The reagents used are fully dried at 250°C to 300°C, among them, K 2 ZrF 6 +KBF 4 The powder is ground into a fine powder (particle size less than 200 mesh), weighed and put into the spray tank, K 2 ZrF 6 +KBF 4 The powder is added in an amount of 20% of the weight of the metal.

[0055] (2): In situ reaction synthesis to prepare composite material melt:

[0056] device such as figure 2 , ...

Embodiment 3

[0058] Embodiment 3: preparation (Al 3 Zr (s) +Al 2 o 3(s) ) particle reinforced Al-based composites

[0059] Raw materials: base metal: pure Al; solid powder: industrial zirconium carbonate (Zr(CO 3 ) 2 ) powder, refining degassing agent and slag removal agent;

[0060] The preparation process is divided into two steps:

[0061] (1): Metal smelting and powder preparation:

[0062] 50Kg of pure Al is melted in a 60kW industrial frequency aluminum melting furnace and heated up to 900°C for degassing and slag removal. All reagents used were fully dried at 250°C to 300°C, among which Zr(CO 3 ) 2 Grind into fine powder (particle size less than 200 mesh), weigh and put into blowing tank, Zr(CO 3 ) 2 The added weight is 20% of the metal weight.

[0063] (2): In situ reaction synthesis to prepare composite material melt:

[0064] The molten metal that has been refined and meets the requirements of the initial reaction temperature (900°C) is poured from the metal refining...

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Abstract

The invention relates to a method for preparing endogenetic particle reinforced metal matrix composites under the coupling effect of a magnetic field and supersonic waves. The method comprises: adjusting the temperature of a metal matrix fused mass to the reaction initial temperature after refining, adding a reactant which can generate a particle phase with the fused mass through the reaction in situ for implementing the synthesis reaction, standing the mixture after the reaction is over, and cooling the mixture to the pouring temperature for pouring; and the method is characterized in that: the magnetic field and the high-intensity ultrasonic field are simultaneously exerted in the reaction synthesis process to realize the synthesis of endogenetic particle reinforced metal matrix composites under the coupling effect of the magnetic field and the high-intensity ultrasonic field. The magnetic field can be an intense pulse magnetic field, a high frequency oscillation magnetic field or a low frequency alternating magnetic field. In the method, the coupling effect of the magnetic field and the ultrasonic field makes the particle sizes be thinned and dispersed evenly; the ultrasonic vibration agitation and electromagnetic stirring functions improve the composite dynamic condition, and the compounding of the particle phase and a base metal interface is better; and the co-action of magnetochemistry and sonochemistry improves the thermodynamic condition of the reaction in situ, as well as speeding up the reaction in situ and controlling the growth of the particle phase.

Description

technical field [0001] The invention relates to the technical field of synthesis and preparation of new composite materials, in particular to a new method for preparing particle-reinforced metal-based composite materials by in-situ reaction synthesis of melts under the coupling action of electromagnetic fields and ultrasonic fields. Background technique [0002] Particle-reinforced metal matrix composites have good mechanical properties and physical and chemical properties due to their composite structural characteristics. One of the research hotspots of metal matrix composites. The in-situ reaction synthesis method is currently the main method for preparing particle-reinforced metal matrix composites. The principle of this method is to add alloy elements or compounds that can form a second phase to the metal matrix melt, and react with the metal melt at a certain temperature. In situ reaction to generate particle phase to prepare endogenous particle-reinforced composites. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/115B22D1/00
CPCB22D27/02B22D11/115B22D1/00
Inventor 赵玉涛陈刚王宏明李桂荣张松利
Owner JIANGSU UNIV
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