Method for preparing aluminum alloy diamond composite material by adopting additive manufacturing technology

A composite material and additive manufacturing technology, which is applied in the field of preparing aluminum alloy diamond composite materials using additive manufacturing technology, can solve the problems of diamond carbonization and poor aluminum alloy interface bonding, and achieves low cost, good mechanical properties and low density. Effect

Inactive Publication Date: 2020-12-08
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing aluminum alloy diamond composite materials using additive manufacturing technology to solve the problems of poor bonding between diamond and aluminum alloy interfaces and diamond carbonization during the preparation process

Method used

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  • Method for preparing aluminum alloy diamond composite material by adopting additive manufacturing technology
  • Method for preparing aluminum alloy diamond composite material by adopting additive manufacturing technology
  • Method for preparing aluminum alloy diamond composite material by adopting additive manufacturing technology

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specific Embodiment approach 1

[0031] Specific implementation mode 1: This implementation mode records a method for preparing aluminum alloy diamond composite materials using additive manufacturing technology, and the steps of the method are:

[0032] Step 1: Pretreatment of diamonds: Ultrasonic cleaning of natural diamonds with a particle size of 30-50 microns in sequence with deionized water and alcohol to remove impurities and oil stains on them, and then filtered out through filter paper for use. The treated diamond is stirred in hydrochloric acid with a concentration of 0.5-1 mol at 50-80° C. for 30 minutes to activate the diamond surface. Then use deionized water to wash repeatedly until the pH of the supernatant is 7, and dry in a blast drying oven at 60-80°C for 8-12 hours;

[0033] Step 2: Diamond surface treatment: Due to the extremely poor wettability of diamond and aluminum, in order to form a good cross-section between diamond and aluminum alloy, it is necessary to coat a layer of titanium carb...

specific Embodiment approach 2

[0037] Specific embodiment 2: A method for preparing aluminum alloy diamond composite materials using additive manufacturing technology described in specific embodiment 1. In step 1, the natural diamond is of micron level, with a diameter of 30-40 microns and an impurity content of less than 1ppm .

specific Embodiment approach 3

[0038] Embodiment 3: In Embodiment 1, a method for preparing an aluminum alloy diamond composite material using additive manufacturing technology, in step 1, the ultrasonic cleaning conditions are 50-60kHz, 400-600W.

[0039] Embodiment 4: In Embodiment 1, a method for preparing an aluminum alloy-diamond composite material using additive manufacturing technology, in step 2, the particle size of the titanium powder is 20 microns.

[0040] Embodiment 5: In Embodiment 1, a method for preparing an aluminum alloy-diamond composite material using additive manufacturing technology, in step 3, the particle size of the aluminum alloy is 30-60 microns.

[0041] Embodiment 6: In Embodiment 1, a method for preparing aluminum alloy-diamond composite materials using additive manufacturing technology, in step 3, the volume fraction of the diamond is 10% to 30%, and different volume fractions can be obtained of composite materials.

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Abstract

The invention discloses a method for preparing an aluminum alloy diamond composite material by adopting an additive manufacturing technology, and belongs to the technical field of composite material preparation. In order to solve the problems of poor diamond and aluminum alloy interface bonding and the like in the preparation process, the method comprises the following steps of: carrying out ultrasonic cleaning on natural diamond with deionized water and ethyl alcohol in sequence, stirring the diamond in hydrochloric acid for 30 min and drying the diamond; mixing the diamond with titanium powder evenly according to the molar ratio of (5-10):1, then adding sodium chloride, and reacting for 1.5-2.5 h under the vacuum condition of 10<-3> MPa; stirring and mixing the diamond subjected to surface treatment and aluminum alloy powder in an argon atmosphere for 20-30 minutes; in an argon protective atmosphere, preheating a tungsten substrate by selecting a matched laser condition and reacting;and annealing a sample part at 300-350 DEG C for 2 hours, and carrying out furnace cooling. According to the method, the problems that the interface between the diamond and metal is poor, the porosity is high, and the diamond is carbonized under laser are well solved, and preparation of the aluminum alloy diamond composite material is achieved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for preparing an aluminum alloy diamond composite material by using additive manufacturing technology. Background technique [0002] With the development of integration technology and microelectronic packaging technology, the total power density of electronic components continues to increase, while the physical size of electronic components and electronic equipment tends to be smaller and miniaturized. The rapid accumulation of heat generated by electronic components will definitely affect the performance of electronic components and equipment, and it is imperative to effectively dissipate them. Based on this, a variety of thermal management methods including heat conduction, convection, and radiation heat dissipation are often used at this stage, and the heat dissipation efficiency of electronic components is greatly improved by using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C1/10C22C21/00C22C26/00B22F3/105B33Y10/00
CPCB33Y10/00C22C1/0416C22C1/05C22C21/00C22C26/00Y02P10/25
Inventor 朱嘉琦曹文鑫苏振华代兵徐梁格王晓磊孙婷婷韩杰才
Owner HARBIN INST OF TECH
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