Method for preparing TiO2/Ta2O5 composite coating with special micro nano structure

A composite coating, micro-nano structure technology, applied in the direction of coating, metal material coating process, melt spraying, etc., can solve the problems of hindering promotion, poor corrosion resistance, lack of biological activity of the coating, etc., to facilitate the promotion. , the process is simple, easy to control the effect

Inactive Publication Date: 2014-11-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 The coating lacks biological activity and also exhibits poor corrosion resistance in simulated body fluid (SBF), which greatly hinders its promotion in clinical medicine

Method used

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  • Method for preparing TiO2/Ta2O5 composite coating with special micro nano structure
  • Method for preparing TiO2/Ta2O5 composite coating with special micro nano structure
  • Method for preparing TiO2/Ta2O5 composite coating with special micro nano structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 50%, Ta 2 o 5Powder 50%, weighing 200 g, binder polyvinyl alcohol 20 g, using a planetary ball mill, mixing at a speed of 380 r / min for 2 h, then putting the uniformly mixed slurry in an oven at 80 ° C for drying, grinding, Sieve, get the fine powder between 200-300 mesh, set aside.

[0027] (2) Material cleaning and sandblasting: Use a 10 mm×10 mm×1 mm sheet-shaped titanium alloy Ti-6Al-4V substrate, ultrasonically clean it with acetone, ethanol and deionized water, and air-dry; use a particle size of 350 -500 μm brown corundum sand is used to roughen the surface of the substrate by sandblasting to improve the roughness of the substrate surface.

[0028] (3) Plasma spraying: use atmospheric plasma spraying equipment to prepare TiO on the surface of the substrate treated in step 2 2 / 50%Ta 2 o 5 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar 40 L / m...

Embodiment 2

[0032] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 60%, Ta 2 o 5 Powder 40%, weighing 200 g, binder polyvinyl alcohol 20 g, using a planetary ball mill, mixing at a speed of 380 r / min for 2 h, then putting the uniformly mixed slurry in an oven at 80 ° C for drying, grinding, Sieve, get the fine powder between 200-300 mesh, set aside.

[0033] (2) Material cleaning and sandblasting: Use a 10 mm×10 mm×1 mm sheet-shaped titanium alloy Ti-6Al-4V substrate, ultrasonically clean it with acetone, ethanol and deionized water, and air-dry; use a particle size of 350 -500 μm brown corundum sand is used to roughen the surface of the substrate by sandblasting to improve the roughness of the substrate surface.

[0034] (3) Plasma spraying: use atmospheric plasma spraying equipment to prepare TiO on the surface of the substrate treated in step 2 2 / 40%Ta 2 o 5 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar 40 L / ...

Embodiment 3

[0038] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 70%, Ta 2 o 5 Powder 30%, weighing 200 g, binder polyvinyl alcohol 20 g, using a planetary ball mill, mixing at a speed of 380 r / min for 2 h, then putting the uniformly mixed slurry in an oven at 80 ° C for drying, grinding, Sieve, get the fine powder between 200-300 mesh, set aside.

[0039] (2) Material cleaning and sandblasting: Use a 10 mm×10 mm×1 mm sheet-shaped titanium alloy Ti-6Al-4V substrate, ultrasonically clean it with acetone, ethanol and deionized water, and air-dry; use a particle size of 350 -500 μm brown corundum sand is used to roughen the surface of the substrate by sandblasting to improve the roughness of the substrate surface.

[0040] (3) Plasma spraying: use atmospheric plasma spraying equipment to prepare TiO on the surface of the substrate treated in step 2 2 / 30%Ta 2 o 5 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar 40 L / ...

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Abstract

The invention relates to a method for preparing a TiO2 / Ta2O5 composite coating with a special micro nano structure. The method utilizes a plasma spraying technology, changes chemical compositions of the TiO2 coating by doping Ta2O5, simultaneously regulates and controls nanotopography of the composite coating for reinforcing cell viability of the TiO2 coating and belongs to the field of medical biological ceramic coatings. The method comprises the following steps: firstly, TiO2 / Ta2O5 composite powder for spraying is prepared by adopting a planetary ball-milling mixing method; secondly, the TiO2 / Ta2O5 composite coating is prepared by adopting an atmospheric plasma spraying method; testing the polarization curve of the TiO2 / Ta2O5 composite coating in simulated body fluid and investigating corrosion resistance in the simulated body fluid. The TiO2 / Ta2O5 composite coating with the micro nano structure, which is prepared by the method, is beneficial to improvement of biological activity of the ceramic coating of an implant and improvement of combination of bone tissue and the coating and can be used as a novel bioactive bone replacement material.

Description

technical field [0001] The invention relates to a method for preparing TiO with special micro-nano structure 2 / Ta 2 o 5 Composite coating method, using atmospheric plasma spraying technology, by doping Ta 2 o 5 to change the TiO 2 The chemical composition of the coating, and at the same time regulate the surface topology (nanotopography) of the composite coating, to enhance the TiO 2 The invention relates to the cell activity of coating, which belongs to the field of medical bioceramic coating. Background technique [0002] At present, plasma spraying coatings used in the field of bone replacement implants mainly include hydroxyapatite (HA) coatings, silicate ceramic coatings, and titanium oxide coatings. Although hydroxyapatite (HA) coating and silicate ceramic coating have good biological activity, their bonding strength with the substrate is low, and they will degrade in physiological environment, which will affect the stability of the coating after it is implanted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/12C23C4/10A61L27/30C23C4/11C23C4/134
Inventor 赵晓兵刘高鹏程兴宝
Owner CHANGZHOU UNIV
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