Antibacterial material additive material, preparation method and application
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An antibacterial material and additive manufacturing technology, which is applied in additive processing, additive manufacturing, medical science, etc., can solve problems such as weakening of elasticity, and achieve the effect of balancing antibacterial effect and balancing mechanical properties
Inactive Publication Date: 2021-07-27
广州柔岩科技有限公司
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However, as the concentration of copper increases, the strength of the material will increase and the elasticity will decrease.
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[0033] like figure 2 As shown, the antibacterial material additive preparation method provided by the embodiment of the present invention includes:
[0034] S101, mixing or processing raw materials to obtain raw material powder; processing the raw material powder by using laser melting or electron beam additive manufacturing technology;
[0035] S102, heat treatment is performed on the processed product according to the requirements of the application scenario, or hot isobaric treatment is performed after cooling in the furnace; or auxiliary homogenization treatment is performed; or aging treatment is performed.
[0036] In step S101, the raw material powder obtained by mixing or processing the raw materials provided by the embodiment of the present invention includes:
[0037] Mix titanium or titanium alloy spherical powder with copper spherical powder according to a specific ratio, and mechanically mix in a powder mixer for 4-10 hours;
[0038] Or, using a specific propor...
Embodiment 1
[0048] An antibacterial material manufacturing process
[0049] 1. Use titanium or titanium alloy spherical powder and copper spherical powder to mix in a specific proportion, titanium or titanium alloy as the main material, copper proportion is 3%-10%, the two powders are mechanically mixed in a mixer 4- 10h.
[0050] Or directly use a specific proportion of titanium-copper alloy ingot, and use plasma rotating electrode, plasma atomization or gas atomization method to produce spherical alloy powder
[0051] 2. Use laser melting or electron beam additive manufacturing technology to process titanium-copper powder, the powder diameter is less than 15-150um, the indoor oxygen content is less than 100ppm, and the laser power is 70w-1000w.
[0052] 3. Removal of residual stress and selection of main phase structure. Treat at 650-950°C for 2 hours. Cool in furnace.
[0053]4. Heat isobaric treatment (selected according to the usage scenario). Place the product in a closed conta...
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Abstract
The invention belongs to the technical field of metal materials, and discloses an antibacterial material additive material, a preparation method and application. Titanium or titanium alloy spherical powder and copper spherical powder are mixed according to a specific proportion, or a titanium-copper alloy ingot in a specific proportion is utilized, and spherical alloy powder is prepared through a plasma rotating electrode and a plasma atomization or gas atomization method; raw material powder is processed by using a laser melting or electron beam additive manufacturing technology; heat treatment is carried out on a processed product, the product is cooled in a furnace, and then hot isobaric treatment is carried out; homogenization treatment is carried out; and timeliness processing is carried out. According to the alloy additive manufacturing production method and a post-treatment process, compared with an antibacterial coating, common titanium and titanium alloy can have a long-acting antibacterial effect. A mixed material in a specific proportion can be processed by utilizing the advantages of additive manufacturing, a traditional titanium-based material is endowed with the antibacterial characteristic, and the mechanical property and the antibacterial effect of a part can be balanced through the post-treatment process.
Description
technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to an antibacterial material additive, a preparation method and an application thereof. Background technique [0002] At present, additive manufacturing (AM) or 3D printing is an emerging manufacturing technology that builds materials layer by layer based on digital models. Titanium and titanium alloys are currently the most widely used metal materials for additive manufacturing due to their good mechanical properties, biocompatibility and corrosion resistance, and can be used as implants in the internal environment of the human body. Combined with additively fabricated porous structures, such as trabecular bone-like structures, tissue growth and drug delivery can be promoted. But bacterial infection around medical implants after surgery has become a common problem, which can lead to implant failure and cause pain to patients. [0003] This is when bacteria for...
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