Metal part with micro-nano structure, preparation method and application of metal part
A micro-nano structure and metal technology, applied in the fields of additive manufacturing, process efficiency improvement, medical science, etc., can solve the problem of poor bonding strength between the surface micro-nano structure and the matrix, and achieve the promotion of growth and bonding, uniform distribution, and improved The effect of stability
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[0038] Traditional surface micro-nano structure preparation methods include: spraying, dipping, deposition, sputtering, micro-arc oxidation and other methods. These methods are either difficult to prepare surface micro-nano structures on the three-dimensional structure matrix, or the prepared surface micro-nano structures are unevenly distributed and have poor bonding strength with the workpiece matrix, resulting in unstable realization of specific functions. In view of this, the present invention proposes a method for preparing metal parts with a micro-nano structure, which can not only form a uniform micro-nano structure on the surface of the metal part, but also solve the problem of surface micro-nano structures and problems caused by traditional preparation methods. The problem of poor bond strength of the matrix.
[0039] refer to figure 1 , the preparation method of the metal product with micro-nano structure comprises the following steps:
[0040] Step S10, acquiring ...
Embodiment 1
[0057] According to the application requirements and the size of the application scene, the 3D structural model of the metal part is designed through 3D software, and the 3D structural model is converted into a data file that can be directly processed.
[0058] Mix the metal material and the binder to form the printing material, and use the DIW method to print the printing material according to the above three-dimensional structure model to print out the initial three-dimensional metal parts.
[0059] The initial three-dimensional metal parts are placed on the ceramic substrate, and then sent into a high-temperature sintering furnace, and vacuumed to a vacuum degree of 2×10 -2 Pa, then raise the temperature to 1100°C at a heating rate of 2°C / min, and sinter for 5 hours to obtain a metal product with a micro-nano structure, and its macrostructure is as follows figure 2 As shown, the whole is blocky and has many holes. Electron microscope observation of metal parts, see imag...
Embodiment 2
[0063] According to the application requirements and the size of the application scene, the 3D structural model of the metal part is designed through 3D software, and the 3D structural model is converted into a data file that can be directly processed.
[0064] Mix the metal material and the binder to form the printing material, and use the DIW method to print the printing material according to the above three-dimensional structure model to print out the initial three-dimensional metal parts.
[0065] The initial three-dimensional metal parts are placed on the ceramic substrate, and then sent into a high-temperature sintering furnace, and vacuumed to a vacuum degree of 5×10 -2 Pa, then raise the temperature to 2100°C at a heating rate of 10°C / min, and sinter for 1h to obtain metal parts with micro-nano structure. Metal parts are observed by electron microscope, see Figure 5 , its surface micro-nano structure is a thorn-like structure, which has excellent specific functionalit...
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