Bionic composite coating, preparation method and application thereof, and flow passage component
A technology of composite coating and overcurrent components, applied in the direction of coating, metal material coating process, mechanical equipment, etc., can solve the problems such as the inability to fully meet the protection requirements of overcurrent components and the complex service conditions of overcurrent components, and achieve Improve the comprehensive protection ability, the integration is fast and accurate, and the process is reliable.
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[0044] In addition, the present application also provides a method for preparing the above-mentioned biomimetic composite coating, for example, may include the following steps:
[0045] The inner layer mainly containing TiNi phase and the surface layer containing TiN hard phase are sequentially prepared on the surface of the substrate, and then the micro-texture is prepared on the surface of the surface layer.
[0046] Before the preparation, the structural model of the biomimetic composite coating was established and the preparation path was preset. Specifically, the bionic structural model design and preparation path planning of the bionic composite coating can refer to the following methods: use 3D drawing software (such as pore 3D drawing software) to draw the structural model of the bionic composite coating, within a certain range (not Design micro-textures within more than 150 μm). The pattern of the micro-texture can be selected from square or circular patterns accordi...
Embodiment 1
[0067] On the surface 4 of a flat sample, a biomimetic coating with a composite structure of surface hardness and interior toughness (structure such as figure 1 shown), its preparation steps are as follows (preparation process is as follows figure 2 shown):
[0068] Step 1: Based on the surface 4 protection requirements of the parts, use the Pore 3D drawing software to draw the structural model of the bionic coating with a composite structure. The overall thickness of the composite coating is 4.8mm, and the thicknesses of the inner layer 2 and the surface layer 3 of the composite coating are respectively The micro-texture is designed within 150 μm from the surface 4 of the surface layer 3. The pattern of the micro-texture is a circular pattern with a depth of 120 μm and a diameter of 200 μm, and the texture pitch is 400 μm. The designed composite coating model is imported into the laser deposition path planning software. According to the material forming characteristics and ...
Embodiment 2
[0074] On the surface 4 of a flat plate sample, a biomimetic coating with a composite structure of surface hardness and interior toughness is prepared, and the preparation steps are as follows:
[0075] Step 1: Based on the surface 4 protection requirements of the parts, use the Pore 3D drawing software to draw the structural model of the bionic coating with a composite structure. The overall thickness of the composite coating is 4.8mm, and the thicknesses of the inner layer 2 and the surface layer 3 of the composite coating are respectively 3.2 mm and 1.6 mm, and the micro-texture is designed within 120 μm from the surface 4 of the surface layer 3. The pattern of the micro-texture is a circular pattern with a depth of 100 μm and a diameter of 130 μm, and the texture spacing is 200 μm. The designed composite coating model is imported into the laser deposition path planning software. According to the material forming characteristics and structural characteristics, the model is lay...
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