Method for synthesizing particle reinforced composite material under composite action of current and magnetic field

A composite effect and composite material technology, which is applied in the field of particle-reinforced aluminum-based composite material preparation, can solve the problems of difficulty in improving reaction speed and efficiency, particle-reinforced phases tend to agglomerate and grow, and achieves improved motion and dispersion effects with low price. , the effect of reducing energy consumption

Inactive Publication Date: 2011-08-03
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a new method for synthesizing particle-reinforced aluminum-matrix composites under the compound action of electric current and magnetic field, to solve the difficulty in improving the reaction speed and efficiency of particle-reinforced aluminum-matr...

Method used

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  • Method for synthesizing particle reinforced composite material under composite action of current and magnetic field
  • Method for synthesizing particle reinforced composite material under composite action of current and magnetic field
  • Method for synthesizing particle reinforced composite material under composite action of current and magnetic field

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of ZrB 2 Particulate Reinforced Aluminum Matrix Composites

[0029] Raw materials: base metal: aluminum alloy; solid powder: potassium fluozirconate and potassium fluoborate powder (purity: 99%), refining degassing agent and slag removal agent;

[0030] Current and magnetic field: the current adopts alternating current, the current intensity is 100A, the frequency is 55Hz, the magnetic field is a static magnetic field, and the magnetic field strength is 1.0T.

[0031] The preparation process is as follows:

[0032] (1) First metal smelting and powder preparation:

[0033] 50Kg of aluminum alloy is melted in a crucible-type resistance furnace and heated to 900°C, degassed and slag removed; all reagents used are fully dried at 200°C, and the reaction salt is ground into fine powder (with a particle size of less than 100 mu m), weighed and ready for use, the weight of the reaction salt added is 20% of the weight of the metal (the weight rat...

Embodiment 2

[0044] Embodiment 2: preparation (Al 3 Zr (s) +Al 2 o 3(s) ) particle reinforced aluminum matrix composites

[0045] Raw materials: base metal: aluminum alloy; solid powder: industrial zirconium carbonate (Zr(CO 3 ) 2 ) powder (purity 99.20%), refining degassing agent and slag removal agent;

[0046] In situ reaction equation: 7Al (l) +Zr(CO 3 ) 2(s) =Al 3 Zr (s) +2Al 2 o 3(s)

[0047] Particle reinforcement phase: Al 3 Zr (s) and Al 2 o 3(s)

[0048] Current and magnetic field: The current adopts direct current, the current intensity is 100A, the magnetic field is an alternating magnetic field, the magnetic field intensity is 0.5T, and the magnetic field frequency is 55Hz.

[0049] The preparation process is as follows:

[0050] (1) First metal smelting and powder preparation:

[0051] 50Kg of aluminum alloy is melted in a crucible resistance furnace and heated up to 900°C, degassed and slag removed; all reagents used are fully dried at 300°C,...

Embodiment 3

[0056] Embodiment 3: Preparation of ZrB 2 Particulate Reinforced Aluminum Matrix Composites

[0057] The raw materials used in this embodiment and the preparation process are exactly the same as those in Example 1, except that the parameters of the current and magnetic field used are different; the current used is an alternating current, and the parameters of the alternating current are: current intensity 500A, current frequency: 200Hz; the magnetic field used is a static magnetic field, the magnetic induction of the magnetic field is 2T, and the time for the current and the magnetic field to act simultaneously is 5 minutes.

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Abstract

The invention relates to the technical field of preparation of particle reinforced aluminum-based composite materials, in particular to a method for synthesizing a particle reinforced aluminum-based composite material through direct reaction of a melt under the composite action of current and a magnetic field. The method is mainly characterized in that: in the process of synthesizing the particlereinforced aluminum-based composite material by a direct melt reaction method, current is introduced into the melt and the magnetic field is applied so as to promote melt reaction and control the appearance, size, motion and distribution of particles through electromagnetic oscillation effect generated by interaction of the current and the magnetic field. In the scheme, alternating current and a static magnetic field can be composited, and direct current and an alternating magnetic field also can be composited. By the method, the synthesis reaction rate and yield can be obviously improved, obvious effects of controlling the appearance of the particles and promoting dispersion are achieved, and the method is suitable for preparing high-performance particle reinforced composite materials onan industrial scale.

Description

technical field [0001] The invention relates to the technical field of preparation of particle-reinforced aluminum-based composite materials, in particular to a method for preparing particle-reinforced aluminum-based composite materials through direct reaction synthesis of melts under the combined action of current and magnetic field. Background technique [0002] Due to its composite structural characteristics and good physical, chemical and mechanical properties, particle-reinforced aluminum-based composites have gradually become a new type of material that is more and more widely used; there are mainly two mature methods for the preparation of particle-reinforced aluminum-based composites: Plus enhanced particle method and in situ reaction generation method. [0003] At present, the melt reaction synthesis method is an important method for preparing particle-reinforced aluminum matrix composites. This method is to add reactants (mainly salts or oxides) to the melt, and th...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02
Inventor 王宏明李桂荣赵玉涛张勋寅张廷旺
Owner JIANGSU UNIV
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