Method for synthesizing particle reinforced aluminum-based composite under high-intensity ultrasonic field and pulsed electric field

A pulsed electric field and composite material technology, which is used in the field of synthesizing particle-reinforced aluminum matrix composites under high-energy ultrasound and pulsed electric field, can solve the problems of coarse particle dispersion, unevenness, low reaction efficiency, etc., achieve simple and safe operation, and increase energy fluctuations. , the effect of precipitation growth promotion
CN102121075BActive Publication Date: 2013-03-13南通大学技术转移中心有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
南通大学技术转移中心有限公司
Publication Date
2013-03-13

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Abstract

The invention relates to the technical field of the preparation of the particle reinforced metal-based composite, in particular to a method for synthesizing a particle reinforced aluminum-based composite under a high-intensity ultrasonic field and a pulsed electric field. The method is mainly characterized in that when the melt direct reaction method is adopted to perform the in-situ reaction of the particle reinforced aluminum-based composite, the high-intensity ultrasonic field and pulsed electric field are both applied on the reaction melt. The parameters of the high-intensity ultrasonic field are as follows: the frequency is 22-30kHz and the intensity is 1-10W / cm<2>. The parameters of the pulsed electric field are as follows: the peak density of current is 0.1-10A / cm<2> and the pulse frequency is 0.1-10Hz. The method has the significant advantage of the coupling of the high-intensity ultrasonic field and the pulsed electric field, thus the thermodynamics and kinetics of the in-situ particle formation reaction can be improved, the mixing of the reactant and the melt can be improved and the shape and size of particles in micron-scale / nanoscale can be controlled; and the dispersion effect of particles in the melt can be controlled, and the method is suitable for the preparation of the high performance micron-nano particle reinforced composite.
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Description

technical field

[0001] The invention relates to the technical field of preparation of particle-reinforced metal-based composite materials, in particular to a method for synthesizing particle-reinforced aluminum-based composite materials under high-energy ultrasonic and pulsed electric field. Background technique

[0002] Particle-reinforced aluminum matrix composites have good mechanical properties and physical and chemical properties due to their composite structural characteristics. One of the research hotspots of aluminum matrix composites; at present, melt direct reaction synthesis is the main method for preparing particle reinforced aluminum matrix composites. The principle of this method is to add alloying elements or compound, react with molten metal in situ at a certain temperature to form a particle phase to obtain an endogenous particle-reinforced composite material; due to the in-situ formation of the particle phase in the preparation of the composite material, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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