3D-printing in-situ rare earth doped titanium matrix composite material activated bone implant and forming method

A titanium-based composite material and 3D printing technology, applied in the direction of prosthesis, additive processing, additive manufacturing, etc., to achieve the effects of short production cycle, refined solidification structure, and enhanced comprehensive service performance

Active Publication Date: 2018-10-26
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: Aiming at the problems existing in the existing rare earth-reinforced artificial titanium alloy active implants, the present invention provides a 3D printed in-situ rare earth-doped reinforced titanium-based composite active bone implant, and provides 3D printed in-situ Rare earth-doped reinforced titanium matrix composite active bone implant forming method

Method used

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  • 3D-printing in-situ rare earth doped titanium matrix composite material activated bone implant and forming method
  • 3D-printing in-situ rare earth doped titanium matrix composite material activated bone implant and forming method
  • 3D-printing in-situ rare earth doped titanium matrix composite material activated bone implant and forming method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) B with a mass ratio of 1:2 2 o 3 The powder and the rare earth Nd powder are ball milled and mixed with a high-energy ball milling process at a speed of 250rpm under the protection of argon to obtain metallurgically bonded B 2 o 3 / Nd mixed powder;

[0033] (2) Weigh B with a mass ratio of 5:1:20 2 o 3 / Nd mixed powder, hydroxyapatite powder, spherical pure Ti powder for 3D printing, using argon-assisted protection and a ballless wet low-energy ball milling process with a speed of 50rpm to obtain titanium alloy composite powder with good fluidity;

[0034] (3) Under the protection of high-purity argon gas, using laser 3D printing technology, set the partition size to 1×1mm 2 , with a stacking fault increment of 30°, using a laser energy density of 250J / m to form a 3D printed in-situ rare earth in-situ doped reinforced titanium-based composite active bone implant.

[0035] figure 1 It is the microstructure topography figure of the 3D printing in-situ rare eart...

Embodiment 2

[0037] Referring to the forming method of Example 1, the 3D printed in-situ rare earth in-situ doping-reinforced titanium-based composite material active bone implant is different in that: the speed of high-energy ball milling in step (1) of this embodiment is adjusted to 300rpm; step (2) ) in the ballless wet low energy speed is set to 100rpm, the B 2 o 3 The mass ratio of / Nd mixed powder, hydroxyapatite powder, and spherical pure Ti powder for 3D printing is set to 3:1:25; the size of the laser scanning partition in step (3) is adjusted to 4×4mm 2 , adjust the laser energy density to 300J / m.

[0038] figure 2 The room temperature tensile strength diagram of the 3D printed in-situ rare earth-doped titanium-based composite active bone implant obtained in Example 2 shows that the strength of the rare-earth in-situ doped titanium-based composite active bone implant is as high as 1102.50 MPa, the elongation can reach 19.04%, indicating that its strength and plasticity have b...

Embodiment 3

[0040] Referring to the forming method of Example 2, the 3D printed in-situ rare earth in-situ doping-reinforced titanium-based composite active bone implant is different in that: in step (1) of this example, the rare earth element is selected as Ce, and the B 2 o 3 The mass ratio of powder and rare earth Ce powder is adjusted to 1:3, and the high-energy ball milling speed is adjusted to 400rpm; Titanium alloy is set as Ti-Ni alloy in step (2); the laser scanning partition size is adjusted in step (3) 5×5mm 2 , and the stacking fault increment is 35°.

[0041] image 3 The fracture morphology of the 3D printed in-situ rare earth-doped titanium-based composite material active bone implant prepared in Example 3 shows that the tensile fracture morphology is dimple-like, indicating that the in-situ rare earth oxide and TiB The ceramic phase significantly improves the mechanical properties of hydroxyapatite / titanium alloy composites.

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Abstract

The invention discloses a 3D-printing in-situ rare earth doped titanium matrix composite material activated bone implant. The implant comprises an in-situ rare earth doped titanium matrix composite material formed by in-situ rare earth Re2O3, an in-situ TiB ceramic phase and a hydroxyapatite ceramic phase. A preparation method comprises the steps that B2O3 powder and rare earth Re powder are subjected to ball-milling mixing by adopting a high-energy ball milling technology under inert gas shielding, and B2O3 / Re mixed powder is obtained; the B2O3 / Re mixed powder, hydroxyapatite powder and 3D-printing dedicated spherical titanium alloy powder are weighed, a low-energy ball milling technology under inert gas auxiliary shielding is adopted, and titanium alloy composite material powder is obtained; and under the argon atmosphere, the in-situ rare earth Re2O3, in-situ TiB ceramic and hydroxyapatite ceramic reinforced titanium matrix composite material activated bone implant is formed by means of laser 3D-printing. According to the method, the service performance of the titanium alloy bone implant is improved through rare earth in-situ doping, and precision manufacturing of the high-performance complex-structure titanium alloy activated bone implant can be achieved.

Description

technical field [0001] The invention belongs to the field of medical device manufacturing, and relates to a novel titanium alloy active bone implant and a forming method, in particular to a 3D printed in-situ rare earth doped reinforced titanium-based composite active bone implant and a forming method. Background technique [0002] In recent years, the loss or dysfunction of human tissue due to the aging of the social population and traffic accidents in my country has increased, resulting in a sharp increase in the repair and replacement of bone tissue defects. Compared with medical metal materials such as stainless steel and cobalt-chromium alloy, titanium alloy has become an ideal metal material for clinical application of artificial bone implants because of its better mechanical properties, good corrosion resistance, and excellent biocompatibility. . An ideal biomedical implant material should have good biomechanical compatibility, that is, its strength and density are c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F3/105A61L27/06A61L27/50B33Y80/00B33Y70/00B33Y10/00C22C1/05C22C14/00C22C32/00
CPCC22C1/058A61L27/06A61L27/50C22C14/00C22C32/0005B22F9/04B33Y10/00B33Y70/00B33Y80/00B22F2009/043B22F2998/10A61L2430/24A61L2430/02B22F10/00B22F10/36B22F10/34B22F12/58B22F10/20Y02P10/25
Inventor 夏木建林岳宾刘爱辉李年莲丁红燕丁钲炜陈中
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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