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Additive manufacturing technology-based pure titanium or titanium alloy surface micro/nano structure constructing method and application

A technology of additive manufacturing and construction methods, applied in cleaning methods and utensils, cleaning methods using liquids, additive manufacturing, etc., can solve problems such as unsuitable complex structures and poor adhesion of film layers, and achieve stable and controllable micro-nano structures , strong adaptability and superior performance

Active Publication Date: 2020-08-04
CENT SOUTH UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of preparation methods, people have tried to use medical pure titanium or titanium alloys as raw materials in combination with sandblasting and / laser etching, lye-acid treatment, and hydrothermal treatment to obtain a micro-nano composite structure; such as patent CN201210223080.8; micro-arc oxidation and hydrothermal treatment to build micro / nano structures, such as "Huang Q, Elkhooly T A, Liu X, Zhang R, Yang X, Shen Z, FengQ. Effects of hierarchical micro / nano-topographies on the morphology, proliferation and differentiation of osteoblast-like cells.Colloids and Surfaces B:Biointerfaces,2016,145:37-45."; but these methods can only be constructed on flat surfaces, not suitable for complex structures, poor film adhesion and other problems
So far, there has been no report on the use of 3D printing + hydrothermal treatment + heat treatment to construct micro / nano structures.

Method used

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  • Additive manufacturing technology-based pure titanium or titanium alloy surface micro/nano structure constructing method and application
  • Additive manufacturing technology-based pure titanium or titanium alloy surface micro/nano structure constructing method and application
  • Additive manufacturing technology-based pure titanium or titanium alloy surface micro/nano structure constructing method and application

Examples

Experimental program
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Effect test

Embodiment example 1

[0047] The pure titanium bulk material is formed by selective laser melting, and the micro-nano structure is constructed on the surface of pure titanium by hydrothermal treatment.

[0048] A 14×14×3mm pure titanium block material is prepared by selective laser melting technology, and the laser directly acts on the front side. The particle size of the powder taken is 20-60 μm, the laser power is 400W, the powder coating thickness is 0.04mm, the laser scanning distance is 0.09mm, and the laser scanning speed is 1700mm / s. The pure titanium block was cut into 7×7×3mm by wire cutting, ultrasonically cleaned with acetone, ethanol and deionized water in sequence, 10min each time, and dried in a vacuum oven at 50°C. Prepare 0.1mol / L strontium chloride solution as liquid A, configure 1mol / L NaOH solution as liquid B, and mix liquids A and B uniformly in the same volume as liquid mixture. Put the sample face up, place it in a 100ml polytetrafluoroethylene hydrothermal reactor liner fil...

Embodiment example 2

[0052] The pure titanium bulk material is formed by selective laser melting, and the micro-nano structure is constructed on the surface of pure titanium by hydrothermal treatment.

[0053] A 14×14×3mm pure titanium block material is prepared by selective laser melting technology, and the laser directly acts on the front side. The particle size of the powder taken is 20-60 μm, the laser power is 400W, the powder coating thickness is 0.04mm, the laser scanning distance is 0.09mm, and the laser scanning speed is 1700mm / s. The pure titanium block was cut into 7×7×3mm by wire cutting, ultrasonically cleaned with acetone, ethanol and deionized water in sequence, 10min each time, and dried in a vacuum oven at 50°C. Put the sample face up, place it in a 100ml polytetrafluoroethylene hydrothermal reactor liner filled with 30ml 1mol / L NaOH solution, and react at 200°C for 16h. Then take it out and ultrasonically clean it twice with deionized water, 10min each time. Subsequently, ion e...

Embodiment example 3

[0057] The pure titanium bulk material is formed by selective laser melting, and the micro-nano structure is constructed on the surface of pure titanium by hydrothermal treatment.

[0058] A 14×14×3mm pure titanium block material is prepared by selective laser melting technology, and the laser directly acts on the front side. The particle size of the powder taken is 20-60 μm, the laser power is 400W, the powder coating thickness is 0.04mm, the laser scanning distance is 0.09mm, and the laser scanning speed is 1700mm / s. The pure titanium block was cut into 7×7×3mm by wire cutting, ultrasonically cleaned with acetone, ethanol and deionized water in sequence, 10min each time, and dried in a vacuum oven at 50°C. Place the sample face up, place it in a 100ml polytetrafluoroethylene hydrothermal reactor liner filled with 60ml 0.5mol / L NaOH solution, and react at 200°C for 16h. Then take it out and ultrasonically clean it twice with deionized water, 10min each time. Subsequently, i...

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Abstract

The invention relates to an additive manufacturing technology-based pure titanium or titanium alloy surface micro / nano structure constructing method and application. The constructing method comprisesthe following steps of first, obtaining a pure titanium or titanium alloy substrate material through 3D; second, placing the substrate obtained in the first step in a hydrothermal reactor, and performing a hydrothermal reaction under an alkaline condition to obtain a hydrothermal reaction product, wherein the temperature of the hydrothermal reaction is greater than or equal to 110 DEG C, the hydrothermal reaction time is longer than or equal to 6 hours, when the hydrothermal reaction is performed, the concentration of hydroxyl ions in a system is greater than 0.1 mol / L; and third, cleaning theobtained hydrothermal reaction product, and then, performing drying and heat treatment to obtain a titanium material with a micro / nano structure on the surface, wherein the temperature of the heat treatment is 300 to 700 DEG C. The product constructed by the method is used as a biomedical orthopedic implant. The constructing method provided by the invention is not restrained by surface smoothnesssituation; the operation is simple, convenient and controllable; the obtained product is good in performance; and large-scale application is facilitated.

Description

technical field [0001] The invention relates to a construction method and application of a pure titanium or titanium alloy surface micro / nano structure based on additive manufacturing technology; it belongs to the technical field of biological material preparation. Background technique [0002] As a transition metal, titanium's outermost shell is not completely filled with electrons. The density of titanium is low, only 4.5g / cm 3 , is about 60% of steel. Light weight can reduce the patient's burden, enhance its comfort and activity function. Compatibility of the modulus of elasticity between the implant and the natural bone is crucial for prolonging the lifetime of the implant. Compared with cobalt alloys and stainless steel, the elastic modulus of titanium and its alloys is closest to that of human bone, which can reduce the occurrence of stress shielding and prevent local bone resorption. [0003] However, due to the biological inertness of titanium-based metal materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105C23C18/12C22F1/18B08B3/12B08B3/08A61L27/06A61L27/30B33Y10/00B33Y40/20B33Y70/00
CPCC23C18/1204C23C18/1241C23C18/1295C23C18/1291C22F1/183B08B3/12B08B3/08A61L27/06A61L27/306B33Y10/00B33Y40/00B33Y70/00A61L2400/18B22F10/00B22F10/28B22F10/64B22F10/36B22F10/68B22F10/32
Inventor 吴宏刘文涛黄千里杨思梁陆新刘咏刘银周少强伏志宏李清湘江皇义
Owner CENT SOUTH UNIV
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