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A method for preparing tantalum biocoating by magnetron sputtering on the surface of magnesium alloy

A magnetron sputtering, bio-coating technology, applied in metal material coating process, coating, sputtering and other directions, can solve the problem of unsatisfactory biocompatibility, poor corrosion resistance, loss of mechanical properties, etc. problem, to achieve good bone-inducing activity, good coating adhesion, and good bone conductivity.

Active Publication Date: 2020-07-17
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the main problems in the prior art are: 1. The corrosion resistance of magnesium matrix materials is poor, and the mechanical properties are lost due to corrosion before the bone is not healed; 2. Magnesium alloys formed after magnesium and other metals are alloyed The corrosion resistance of the material has been greatly improved compared with pure magnesium materials, but as a bioimplantable material, its biocompatibility is not ideal; 3. Magnetron sputtering technology was used to prepare tantalum-containing biocoatings Layer technology and application are still blank

Method used

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  • A method for preparing tantalum biocoating by magnetron sputtering on the surface of magnesium alloy
  • A method for preparing tantalum biocoating by magnetron sputtering on the surface of magnesium alloy
  • A method for preparing tantalum biocoating by magnetron sputtering on the surface of magnesium alloy

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Effect test

Embodiment 1

[0050] Preparation of tantalum biocoating on magnesium alloy surface by magnetron sputtering.

[0051] Such as Figure 5 Shown in the process flow chart, the present embodiment carries out according to the following steps:

[0052] 1. Sample grinding and cleaning: the sample is polished with 200#-2000# sandpaper, washed in cold water, degreased with acetone, ultrasonically cleaned with ethanol, and then dried for use;

[0053] 2. Installation: Install the sample, aluminum (Al) target, and tantalum (Ta) target into the magnetron sputtering chamber, ensuring that the distance between the sample surface and the target is 8cm;

[0054]3. Vacuumize and fill with argon: vacuumize the magnetron sputtering chamber to ≤1×10 -3 Pa, filled with argon to 0.4Pa;

[0055] 4. Preparation of aluminum (Al) transition layer by magnetron sputtering:

[0056] 4a. Select an aluminum (Al) target;

[0057] 4b. Adjust the voltage to 265V, and magnetron sputtering for 5 minutes;

[0058] 4c. Tur...

Embodiment 2

[0067] Preparation of tantalum biocoating on magnesium alloy surface by magnetron sputtering.

[0068] Such as Figure 5 Shown in the process flow chart, the present embodiment carries out according to the following steps:

[0069] 1. Sample grinding and cleaning: the sample is polished with 200#-2000# sandpaper, washed in cold water, degreased with acetone, ultrasonically cleaned with ethanol, and then dried for use;

[0070] 2. Installation: Install the sample, aluminum (Al) target, and tantalum (Ta) target into the magnetron sputtering chamber, ensuring that the distance between the sample surface and the target is 9cm;

[0071] 3. Vacuumize and fill with argon: vacuumize the magnetron sputtering chamber to ≤1×10 -3 Pa, filled with argon to 0.4Pa;

[0072] 4. Preparation of aluminum (Al) transition layer by magnetron sputtering:

[0073] 4a. Select an aluminum (Al) target;

[0074] 4b. Adjust the voltage to 270V, and magnetron sputtering for 7 minutes;

[0075] 4c. Tu...

Embodiment 3

[0083] Preparation of tantalum biocoating on magnesium alloy surface by magnetron sputtering.

[0084] Such as Figure 5 Shown in the process flow chart, the present embodiment carries out according to the following steps:

[0085] 1. Sample grinding and cleaning: the sample is polished with 200#-2000# sandpaper, washed in cold water, degreased with acetone, ultrasonically cleaned with ethanol, and then dried for use;

[0086] 2. Installation: Install the sample, aluminum (Al) target, and tantalum (Ta) target into the magnetron sputtering chamber, ensuring that the distance between the sample surface and the target is 10cm;

[0087] 3. Vacuumize and fill with argon: vacuumize the magnetron sputtering chamber to ≤1×10 -3 Pa, filled with argon to 0.4Pa;

[0088] 4. Preparation of aluminum (Al) transition layer by magnetron sputtering:

[0089] 4a. Select an aluminum (Al) target;

[0090] 4b. Adjust the voltage to 275V, and magnetron sputtering for 8 minutes;

[0091] 4c. T...

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Abstract

Belonging to the technical field of metal material surface coatings, the invention relates to a method for preparation of a tantalum bio-coating on a magnesium alloy surface by magnetron sputtering. The method includes: firstly conducting sandpaper polishing, cold water rinsing, acetone deoiling, and ethanol ultrasonic cleaning on a sample; then installing the sample, an Al target material, and aTa target material into a magnetron sputtering cavity; conducting vacuum pumping on the magnetron sputtering cavity and filling the cavity with argon gas; adjusting the voltage to 265V-275V, and performing magnetron sputtering for 5-8min to prepare an Al transition layer; then adjusting the voltage to 245V-255V, and performing magnetron sputtering for 30-40min to prepare a Ta coating; and then turning off the power, and carrying out sample unloading, cleaning and drying. The method has the advantages of convenient operation, simple equipment, stable and reliable process, easy realization, lowtemperature and high efficiency, low damage, etc., and is suitable for production and application. The obtained coating has good binding force and uniform microstructure, not only can improve the corrosion resistance of magnesium alloy, but also can improve the biocompatibility, osteoconduction and bone-inducing activity thereof.

Description

technical field [0001] The invention belongs to the technical field of metal material surface coatings, and in particular relates to a method for preparing tantalum biological coatings by magnetron sputtering on the surface of magnesium alloys. Background technique [0002] Orthopedic implant materials mainly include joint replacement, bone plate and dental implant materials, etc. Ideal orthopedic implant materials should have excellent biocompatibility and bioactivity, as well as suitable load-bearing capacity, corrosion resistance and wear resistance. Traditional stainless steel bone implants often have poor biocompatibility in clinical use, and are prone to produce harmful metal ions and other problems; although titanium alloys have better corrosion resistance and biocompatibility when used as bone implant materials However, its elastic modulus is still higher than that of natural hot bone, so it is easy to cause "stress shielding" phenomenon. At the same time, the above...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/16C23C14/02
CPCC23C14/025C23C14/165C23C14/352
Inventor 李涌泉冯俊宁陈宇红李吉林张小丽耿桂宏
Owner BEIFANG UNIV OF NATITIES
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