Preparation method of titanium-based tantalum coating biological implant material

A technology for tantalum coatings and implants, which is applied in the field of preparation of tantalum metal coatings, can solve the problems of unsteady control of deposition rate, insufficient bonding force between coatings and substrates, and large residual thermal stress of coatings, etc., to achieve optimal clinical Application effect, tantalum coating uniformity, effect of improving biological characteristics

Active Publication Date: 2019-02-15
赵德伟 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the deposition process, there are many factors that affect the morphology of the coating, such as high deposition temperature, large residual thermal stress of the coating, and cracks on the surface.
In addition, the deposition rate cannot be stably controlled, the coating is uneven, the bonding force between the coating and the substrate is not enough, and it is easy to fall off, etc.

Method used

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  • Preparation method of titanium-based tantalum coating biological implant material
  • Preparation method of titanium-based tantalum coating biological implant material
  • Preparation method of titanium-based tantalum coating biological implant material

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A titanium-based tantalum-coated biological implant is prepared by depositing tantalum metal on the surface of a titanium alloy bone plate matrix by using chemical vapor deposition technology. The preparation method is as follows:

[0034] (1) Preprocessing:

[0035] The titanium alloy bone plate matrix was ultrasonically treated with deionized water for 30 minutes, then dried, washed twice with absolute ethanol, dried, and finally dried at 150 °C;

[0036] The dried titanium alloy bone plate matrix is ​​subjected to sandblasting treatment with a sandblasting machine to form a rough surface.

[0037] The steps of sand blasting treatment are as follows: use white jade corundum with a diameter of 100-150 μm for sand blasting, the sand blasting pressure is 0.3 MPa, and the sand blasting time is 5 minutes. After sandblasting, clean with absolute alcohol, blow dry with nitrogen, and set aside;

[0038] (2) Put the pretreated titanium alloy bone plate substrate into the vap...

Embodiment 2～ Embodiment 5

[0047] The titanium-based tantalum-coated biological implant was prepared according to the method described in Example 1, and the differences between the preparation method and Example 1 are shown in Table 1.

[0048] Table 1 Process conditions for preparing tantalum metal-coated titanium alloy bone plate

[0049]

[0050] For the tantalum-coated titanium alloy bone plate prepared under different process conditions as described in Table 1, the mechanical properties and the bonding force between the tantalum coating and the substrate were measured, and the results are shown in Table 2.

[0051] Properties of the tantalum-coated titanium alloy bone plate prepared under the process conditions described in Table 2 Table 1

[0052]

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Abstract

The invention discloses a preparation method of a titanium-based tantalum coating biological implant material. A titanium-based substrate of which a rough surface is formed by sand blasting treatmentand tantalum metal are placed in a vapor deposition reaction chamber, chlorine and hydrogen are injected to the reaction chamber for a vapor deposition reaction, the vapor deposition time is 7-10 h, and the reaction temperature of vapor deposition is 900-1000 DEG C. According to the preparation method of the titanium-based tantalum coating biological implant material, a tantalum coating obtained by the deposition has good morphology, the thickness of the tantalum coating can be up to 20 microns, and the tantalum coating is uniform and dense; the binding force between the coating and the substrate is greater than 40 Mpa, and the requirements of anti-stripping in the clinical application process can be met; and the prepared titanium-based tantalum coating biological implant material has theaverage compression resistance strength of 611+/-20.4 Mpa, the yield strength of 508+/-15.8 Mpa and the elastic modulus of 102+/-4.1 Gpa, and good bend resistance strength and yield strength are achieved.

Description

technical field [0001] The invention relates to a medical internal implant device, in particular to a method for preparing a tantalum metal coating on traditional titanium and titanium alloy internal implants by using chemical vapor deposition technology. Background technique [0002] For orthopedic diseases, especially traumatic diseases, surgical intervention is required. At present, the metal materials used in orthopedic implants mainly include medical stainless steel and titanium alloy series. Titanium alloy has the characteristics of small specific gravity, high strength, low elastic modulus, and easy processing and forming. It has now developed into an ideal functional structural material for orthopedic implants. However, the complex internal environment of the human body will cause corrosion of metal materials, resulting in the release of toxic elements, thus reducing biocompatibility; how to modify the surface of traditional materials to improve the biocompatibility ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/02C23C16/06A61L27/06A61L27/30
CPCA61L27/06A61L27/306A61L2420/02A61L2430/02C23C16/0254C23C16/06
Inventor 赵德伟马志杰李军雷
Owner 赵德伟
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