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A method to obtain uniform tio on α+β duplex titanium alloy 2 Methods and applications of nanotube arrays

A nanotube array, titanium alloy technology, applied in surface reaction electrolytic coatings, coatings, electrolytic coatings, etc., can solve problems such as unseen and hinder dislocation movement, and achieve simple operation, controllable conditions, and excellent mechanical properties. Effect

Active Publication Date: 2020-01-14
CHINA MOREFOUND TECH LTD SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the large plastic deformation process, a large shear stress is applied to the sample to introduce high-density dislocations, and the grain size is refined to less than 1 micron, and an ultra-fine-grained material composed of uniform equiaxed crystals is obtained, and contains a large number of other Defects, such as: a large number of vacancies and dislocations, can effectively hinder the movement of dislocations, thereby improving the static strength. At present, large plastic deformation technology is mainly used to improve the mechanical properties of metals, and it has not been used to replace heat treatment α+β duplex titanium Alloy obtains α-single-phase structure and prepares homogeneous TiO by anodic oxidation 2 Related reports on nanotube array layer

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  • A method to obtain uniform tio on α+β duplex titanium alloy <sub>2</sub> Methods and applications of nanotube arrays
  • A method to obtain uniform tio on α+β duplex titanium alloy <sub>2</sub> Methods and applications of nanotube arrays
  • A method to obtain uniform tio on α+β duplex titanium alloy <sub>2</sub> Methods and applications of nanotube arrays

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Embodiment 1

[0047] A method to obtain uniform TiO on α+β duplex titanium alloy 2 A method for nanotube arrays, comprising the steps of:

[0048] 1) Preparation of single-phase titanium alloys using large plastic deformation technology:

[0049] Select a commercial Ti-6Al-4V titanium alloy rod as the initial sample, cut it into a titanium sheet with a diameter of 10nm and a thickness of 0.81-0.85mm, and then perform high-pressure torsion processing. The pressure of high-pressure torsion is 3GPa, and the number of rotations is 10. , carried out at room temperature, and obtained a single-phase titanium alloy with a grain size of about 140nm after high-pressure torsion;

[0050] When preparing high-pressure torsion samples, Ti-6Al-4V titanium alloy rods can be cut into titanium sheets with a diameter of 10nm and a thickness of about 1mm by wire cutting, and then polished with sandpaper with a particle size between 400 and 800 mesh , and further thinned to a thickness of 0.81-0.85mm before p...

Embodiment 2

[0056] A method to obtain uniform TiO on α+β duplex titanium alloy 2 A method for nanotube arrays, comprising the steps of:

[0057] 1) Preparation of single-phase titanium alloys using large plastic deformation technology:

[0058] Select a commercial Ti-6Al-4V titanium alloy rod as the initial sample, cut it into a titanium sheet with a diameter of 10nm and a thickness of 0.81-0.85mm, and then perform high-pressure torsion processing, wherein the pressure of high-pressure torsion is 5GPa, and the number of rotations is 12. , carried out at room temperature, and obtained a single-phase titanium alloy with a grain size of about 120nm after high-pressure torsion;

[0059] When preparing high-pressure torsion samples, Ti-6Al-4V alloy rods can be cut into titanium sheets with a diameter of 10nm and a thickness of about 1mm by wire cutting, and then polished with sandpaper with a particle size between 400 and 800 meshes. Further thinning to a thickness of 0.81-0.85mm before proc...

Embodiment 3

[0065] A method to obtain uniform TiO on α+β duplex titanium alloy 2 A method for nanotube arrays, comprising the steps of:

[0066] 1) Preparation of single-phase titanium alloys using large plastic deformation technology:

[0067] A commercial Ti-6Al-4V titanium alloy rod was selected as the initial sample, cut into titanium sheets with a diameter of 10nm and a thickness of 0.81-0.85mm, and then processed by equal-diameter angular extrusion. The conditions of equal-diameter channel angular extrusion were controlled is the inner arc angle of the mold and the outer arc angle ψ are both 90°~120°, using the Bc process path, the indenter speed is 10mm / s, and the processing temperature is 300°C to obtain a single-phase titanium alloy with a grain size of 110nm;

[0068] When preparing the equal channel angular extrusion sample, cut a round rod Ti-6Al-4V titanium alloy sample with a length of 10cm and a diameter of 10mm;

[0069] 3) Using a single-phase titanium alloy as the su...

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Abstract

The invention discloses a method for obtaining uniform TiO2 nano-tube arrays on an alpha+beta biphase titanium alloy and application of the method. The method comprises the following steps that (1) the alpha+beta biphase titanium alloy is converted into a single-phase titanium alloy through a severe plastic deformation method; and (2) the single-phase titanium alloy serves as a matrix, and the uniform TiO2 nano-tube arrays are obtained on the matrix through an anodic oxidation method. The alpha+beta biphase titanium alloy is treated through a severe plastic deformation technology, thus a second phase in the biphase titanium alloy matrix is redissolved to form a single-phase supersaturated solid solution, thus the single-phase titanium alloy is obtained, the titanium alloy is excellent in mechanical property, and uniform TiO2 nano-tube array layers can be further obtained on the surface of the titanium alloy. The severe plastic deformation method is easy to operate and controllable in condition, the processing temperature is far lower than the processing temperature in the prior art, meanwhile, environmental pollution is avoided, and thus the actual application value is better achieved.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanomaterials, in particular to a method for obtaining uniform TiO on α+β dual-phase titanium alloys. 2 Methods and applications of nanotube arrays. Background technique [0002] With its excellent biocompatibility, corrosion resistance and comprehensive mechanical properties, biomedical titanium alloy has been widely used in the production of various orthopedic and stomatological medical devices, such as: artificial joints, bone trauma products, spinal orthopedic internal fixation systems Orthopedic implant products, and orthodontic products. Ti-6A1-4V and Ti-6Al-7Nb are currently the most widely used clinical titanium alloys for medical use, and are typical α+β duplex titanium alloys. [0003] Implant surface modification and activation treatment and porous structure design can induce bone tissue ingrowth, increase interface bonding strength, and accelerate bone repair process, thereby impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C22F1/18
Inventor 胡楠王怀雨
Owner CHINA MOREFOUND TECH LTD SHENZHEN