Fabrication of graphene oxide aluminum matrix composites by laser deposition and its preparation method
An aluminum-based composite material, laser deposition technology, applied in the direction of additive processing, etc., can solve the problems of poor wettability of graphene and aluminum matrix, easy agglomeration of graphene, difficulty in forming, etc., to improve agglomeration, avoid interface reaction, enhance performance effect
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Embodiment 1
[0049] A method for preparing graphene oxide aluminum-based composite material by laser deposition, see the schematic diagram of the process flow figure 1 , Including the following steps:
[0050] Step 1: Material preparation
[0051] (1) Before ball milling, you need to prepare aluminum-based powder (60-180 mesh), prepared graphene oxide, and 2-8mm ball milling balls are stainless steel balls, zirconia balls, and agate balls. This implementation Examples use stainless steel balls and solvents (such as absolute ethanol, acetone, this embodiment uses absolute ethanol);
[0052] (2) Add 0.1 g of graphene oxide to 120 mL of absolute ethanol before use, ultrasonically oscillate at 40 KHz for 2 hours, and control the ultrasonic oscillation temperature to below 40°C to obtain a graphene oxide solution;
[0053] (3) The stainless steel ball is added to absolute ethanol and ultrasonically shaken for 20min-40min before use;
[0054] Step 2: Low-temperature wet ball milling to prepare graphene o...
Embodiment 2
[0060] A method for preparing graphene oxide aluminum-based composite material by laser deposition includes the following steps:
[0061] Step 1: Material preparation
[0062] (1) What needs to be prepared before ball milling is: aluminum-based powder ZL114A (60-180 mesh), prepared graphene oxide, and 2-8mm ball milling balls are one of stainless steel balls, zirconia balls, and agate balls. One, this embodiment uses zirconia balls and solvents (such as absolute ethanol, acetone, this embodiment uses absolute ethanol);
[0063] Scan the aluminum-based powder ZL114A in this example, and see the SEM images at different magnifications figure 2 with image 3 It can be seen from the figure that the overall morphology of the powder is shown under low magnification SEM, with a smooth surface and good sphericity. It is suitable for powder feeding and printing. After the magnification, there is no obvious difference between the crystal grains and the low magnification morphology. .
[0064] ...
Embodiment 3
[0075] A method for preparing graphene oxide aluminum-based composite material by laser deposition includes the following steps:
[0076] Step 1: Material preparation
[0077] (1) Before ball milling, you need to prepare aluminum-based powder (60-180 mesh), prepared graphene oxide, and 2-8mm ball milling balls are stainless steel balls, zirconia balls, and agate balls. This implementation Examples use agate balls and solvents (such as absolute ethanol, acetone, this embodiment uses absolute ethanol);
[0078] (2) Add 0.1 g of graphene oxide to 120 mL of absolute ethanol before use, ultrasonically oscillate at 40 KHz for 2 hours, and control the ultrasonic oscillation temperature to below 40°C to obtain a graphene oxide solution;
[0079] (3) The agate ball is added to absolute ethanol and ultrasonically shaken for 30 minutes before use;
[0080] Step 2: Low-temperature wet ball milling to prepare graphene oxide aluminum-based composite powder
[0081] According to the mass ratio, 2-8mm ...
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