Method for preparing carbonitride modified film on surface of medical titanium alloy implant material

An implant material, a technology of titanium alloy, applied in the field of deposition and preparation of biomedical carbon nitride modified films, can solve problems such as toxicity, and achieve the effects of excellent corrosion resistance, stable chemical properties, and superior mechanics

Inactive Publication Date: 2009-10-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, NiTi shape memory alloy contains a large amount of Ni element, and Ni has strong cytotoxicity and carcinogenic effect, and will cause serious harm due to the precipitation of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] NiTi bio-titanium alloy is used as the substrate. Using ultra-high vacuum magnetron sputtering system, use mechanical pump and molecular pump to pump the reaction chamber to the background vacuum degree ≤1.0×10 -3 Pa, first use pure titanium as the target material to sputter for 10 minutes, use argon (Ar) as the sputtering gas, the flow rate of argon gas is 20sccm, adjust the sputtering power to 150W, and deposit a layer of transition titanium on the surface of NiTi bio-titanium alloy. layer. Then take high-purity graphite as the target material, use the mixed gas of argon and nitrogen as the working gas, the flow rate of argon gas is 5 sccm, the flow rate of nitrogen gas is 25 sccm, continue sputtering for 5 hours, and deposit CN on the titanium transition layer. x film.

[0026] For comparison, the same method was used to deposit the Ti transition layer on the surface of the NiTi alloy, and then continue to deposit the commonly used clinical DLC medical modified fil...

Embodiment 2

[0029] NiTi bio-titanium alloy is used as the substrate. The ultra-high vacuum magnetron sputtering system is adopted, and the reaction chamber is pumped to a background vacuum degree of ≤1.0×10 by using a mechanical pump and a molecular pump. -3 Pa. First, pure titanium was used as the target material for sputtering for 15 minutes, argon was used as the sputtering gas, the flow rate of argon was 30 sccm, the sputtering power was adjusted to 100 W, and a titanium transition layer was deposited on the surface of the NiTi bio-titanium alloy. Then take high-purity graphite as the target material, use the mixed gas of argon and nitrogen as the working gas, the flow rate of argon gas is 10 sccm, the flow rate of nitrogen gas is 20 sccm, continue sputtering for 5 hours, and deposit CN on the titanium transition layer. x film. Adjust the amount of argon or argon / nitrogen gas flow through the gas flow meter, the titanium transition layer and CN will be deposited x The working press...

Embodiment 3

[0032] The Ti6Al4V bio-titanium alloy was used as the substrate. The ultra-high vacuum magnetron sputtering system is adopted, and the reaction chamber is pumped to a background vacuum degree of ≤1.0×10 by using a mechanical pump and a molecular pump. -3 Pa. First use pure titanium as the target material for sputtering for 10 minutes, use argon as the sputtering gas, the flow rate of argon gas is 15 sccm, adjust the sputtering power to 200W, and deposit a layer of titanium transition layer on the surface of the T6Al4V alloy. Then take high-purity graphite as the target material, use the mixed gas of argon and nitrogen as the working gas, the flow rate of argon gas is 15 sccm, the flow rate of nitrogen gas is 15 sccm, continue sputtering for 2 hours, and deposit CN on the titanium transition layer. x film.

[0033] For comparison, in the same way, a titanium transition layer was pre-deposited on the surface of another Ti6Al4V alloy, and then continued to deposit a diamond-lik...

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Abstract

The invention relates to a method for preparing carbonitride modified film on the surface of medical titanium alloy implant material, which has good biocompatibility and can be applied for doposition preparation method of biological medical carbonitride (CNx) modified film implanted on the surface of titanium alloy implant body used in surgery. The method utilizes a technique of DC magnetron sputtering to firstly deposit a Ti transition layer on the surfaces of medical titanium alloy such as NiTi alloy, Ti6Al4V, Ti24Nb4Zr7.9Sn and the like, and then the carbonitride (CNx) modified film with good biocompatibility is sputtered on the surfaces of medical titanium alloy. The technical proposal realizes the good combination of the carbonitride (CNx) film and medical implant materials such as titanium alloy and the like, and has good biological and medical property, thus being favorable for improving the reliability and safety of the medical titanium alloy implant materials such as the NiTi alloy, the Ti6Al4V, the Ti24Nb4Zr7.9Sn and the like in surgery implantation treatment.

Description

technical field [0001] The invention belongs to biomedical coating, in particular, it is a biomedical carbon nitride (CN) which has good biocompatibility and can be applied to the surface of surgical implant titanium alloy x ) Deposition and preparation method of modified thin film. Background technique [0002] Biomedical materials refer to a special class of functional materials that can be implanted into organisms or bonded to biological tissues for medical treatment. With the development of life sciences and the improvement of medical technology, surgical transplantation has become more and more mature, and more and more biomedical materials have been successfully implanted into patients as surgical implants. A large number of artificial hip joints, heart valves, tooth roots, intraocular lenses, etc. are transplanted into patients every year, and practical biomedical materials can almost meet the requirements of organ transplantation in all parts of the human body. [...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/06C23C14/16A61L27/30A61L27/06
Inventor 王继刚刘敏
Owner SOUTHEAST UNIV
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