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A kind of preparation method of titanium-nickel medical implant material

An implant material and medical technology, which is applied in the field of surface modification of rare metal materials, can solve the problems of easily forming cavities on the surface of micro-arc oxidation film and affecting surface properties, so as to reduce the formation of cavities, good wear resistance and thermal shock resistance, and Erosion-enhancing effect

Inactive Publication Date: 2016-04-27
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of the micro-arc oxidation film is also easy to form voids, which affects its surface properties.

Method used

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  • A kind of preparation method of titanium-nickel medical implant material

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Effect test

Embodiment 1

[0027] A method for preparing a titanium-nickel medical implant material. Firstly, plasma alloying technology is used to infiltrate titanium on the surface of a titanium-nickel alloy workpiece to form a deposition layer, and then TiO is formed on the surface of the deposition layer by micro-arc oxidation. 2 and Al 2 o 3 mixed oxide coating;

[0028] Specifically include the following steps:

[0029]1) Take the titanium-nickel alloy substrate, cut it into Φ20mm×4mm as the workpiece, and remove the oxide film on the surface of the workpiece by mechanical and chemical mixing methods. The specific process is: use metallographic sandpaper to roughly grind the surface of the workpiece, and then sandblast the surface of the workpiece Grinding, then ultrasonic cleaning the surface of the workpiece, and finally drying;

[0030] 2) In the plasma surface alloying metal infiltration furnace, the source electrode selects a pure titanium target with a purity of 99.99%, and the workpiece ...

Embodiment 2

[0041] A method for preparing a titanium-nickel medical implant material. Firstly, plasma alloying technology is used to infiltrate titanium on the surface of a titanium-nickel alloy workpiece to form a deposition layer, and then TiO is formed on the surface of the deposition layer by micro-arc oxidation. 2 and Al 2 o 3 mixed oxide coating;

[0042] Specifically include the following steps:

[0043] 1) Take the titanium-nickel alloy substrate, cut it into Φ20mm×4mm as the workpiece, and remove the oxide film on the surface of the workpiece by mechanical and chemical mixing methods. The specific process is: use metallographic sandpaper to roughly grind the surface of the workpiece, and then sandblast the surface of the workpiece Grinding, then ultrasonic cleaning the surface of the workpiece, and finally drying;

[0044] 2) In the plasma surface alloying metal infiltration furnace, the source electrode selects a pure titanium target with a purity of 99.99%, and the workpiece...

Embodiment 3

[0055] A method for preparing a titanium-nickel medical implant material. Firstly, plasma alloying technology is used to infiltrate titanium on the surface of a titanium-nickel alloy workpiece to form a deposition layer, and then TiO is formed on the surface of the deposition layer by micro-arc oxidation. 2 and Al 2 o 3 mixed oxide coating;

[0056] Specifically include the following steps:

[0057] 1) Take the titanium-nickel alloy substrate, cut it into Φ20mm×4mm as the workpiece, and remove the oxide film on the surface of the workpiece by mechanical and chemical mixing methods. The specific process is: use metallographic sandpaper to roughly grind the surface of the workpiece, and then sandblast the surface of the workpiece Grinding, then ultrasonic cleaning the surface of the workpiece, and finally drying;

[0058] 2) In the plasma surface alloying metal infiltration furnace, the source electrode selects a pure titanium target with a purity of 99.99%, and the workpiece...

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Abstract

The invention relates to a preparation method of a novel titanium-nickel medical implantation material, particularly a composite treatment method for preparing a titanium dioxide / aluminum oxide mixture by depositing titanium on a titanium-nickel surface and performing micro-arc oxidation. The method comprises the following steps: firstly, by using a titanium-nickel alloy base as a workpiece, eliminating the oxide film on the workpiece surface by a mechanical-chemical mixed method; secondly, depositing titanium on the workpiece surface by a plasma surface alloying technique; thirdly, carrying out micro-arc oxidation on the workpiece in a micro-arc oxidation device; and finally, carrying out ultrasonic cleaning on the workpiece, and drying to obtain the finished product. The material can effectively isolate the precipitation of the nickel element in the titanium-nickel alloy, and the ceramic film layer of the titanium base surface subjected to micro-arc oxidation has the advantages of fewer surface voids, high hardness, high corrosion resistance, favorable insulativity and high binding force with the base metal. The method has the characteristics of favorable technical repetitiveness, controllable quality and the like, is simple to operate, can be widely used for surface modification treatment of titanium-nickel alloys, and effectively improves the application range and level.

Description

technical field [0001] The invention relates to the technical field of surface modification of rare metal materials, in particular to a compound treatment method for depositing titanium on the surface of titanium and nickel and performing micro-arc oxidation to prepare titanium dioxide and aluminum oxide mixed ceramic films, specifically a titanium-nickel medical plant The method of preparation of the input material. Background technique [0002] Titanium-nickel alloys are widely used in biomedical fields due to their good biocompatibility, high specific strength, corrosion resistance, and superelasticity. It is mainly used to manufacture blood vessels, esophageal stents, dental and orthopedic devices, etc. However, there are two major factors restricting its wide application so far: first, its hardness is low, as an implant, it needs to serve for a long time, and excessive wear and tear will cause human lesions; second, the precipitation of nickel ions caused by corrosion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C10/08C25D11/26
Inventor 王振霞张红前贺志勇杨耀军刘小萍单小林杨红玉
Owner TAIYUAN UNIV OF TECH
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