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A kind of preparation method of porous tio2/sio2 composite coating

A technology of composite coating and powder spraying, which is applied in coating, metal material coating technology, medical science, etc., can solve problems such as low bonding strength, lack of biological activity, and affecting coating stability, and achieve easy control and process Simple, easy-to-promote effects

Active Publication Date: 2016-05-04
枣庄市新星钢结构有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, plasma spraying coatings used in the field of bone replacement implants mainly include hydroxyapatite (HA) coatings, silicate ceramic coatings, titanium oxide coatings, etc.; hydroxyapatite (HA) coatings, Although the silicate ceramic coating has good biological activity, its bonding strength with the substrate is low, and it will degrade in the physiological environment, which will affect the stability of the coating after implantation in the body; TiO 2 The coating has good biocompatibility and excellent mechanical properties. It is an ideal bone replacement implant material and can be used as a candidate material for various artificial joints, artificial bones and artificial roots, but it lacks biological activity. , will not react with biological tissues to form osseointegration, so biologically inert TiO is required 2 Surface modification to improve the biological activity of its surface

Method used

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  • A kind of preparation method of porous tio2/sio2 composite coating
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  • A kind of preparation method of porous tio2/sio2 composite coating

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Effect test

Embodiment 1

[0025] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 50%, SiO 2 Powder 50%, weigh 200g, binder polyvinyl alcohol 20g, use a planetary ball mill, mix at a speed of 380r / min for 2 hours, put the uniformly mixed slurry in an oven at 80°C, dry, grind, sieve, and take The fine powder between 200-300 mesh is reserved.

[0026] (2) Material cleaning and sandblasting: Use a 10mm×10mm×1mm sheet-shaped titanium substrate, ultrasonically clean it with acetone, ethanol and deionized water, and air dry; use brown corundum sand with a particle size of 350-500μm Sandblasting roughening treatment is carried out to improve the roughness of the substrate surface.

[0027] (3) Plasma spraying: use atmospheric plasma spraying equipment to prepare TiO on the surface of the substrate treated in step 2 2 / 50%SiO2 2 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar40L / min, auxiliary gas H 2 12L / min, spraying power 40kW, sprayin...

Embodiment 2

[0038] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 50%, SiO 2 Powder 50%, weigh 200g, binder polyvinyl alcohol 20g, use a planetary ball mill, mix at a speed of 380r / min for 2 hours, put the uniformly mixed slurry in an oven at 80°C, dry, grind, sieve, and take The fine powder between 200-300 mesh is reserved.

[0039] (2) Material cleaning and sandblasting: Use 10mm×10mm×1mm 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 350-500μm Brown corundum sand is used to roughen the surface of the substrate by blasting 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 / 50%SiO2 2 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar40L / min, auxiliary gas H 2 12L / min, spraying...

Embodiment 3

[0045] (1) Preparation of spray powder: TiO by mass ratio 2 Powder 50%, SiO 2 Powder 50%, weigh 200g, binder polyvinyl alcohol 20g, use a planetary ball mill, mix at a speed of 380r / min for 2 hours, put the uniformly mixed slurry in an oven at 80°C, dry, grind, sieve, and take The fine powder between 200-300 mesh is reserved.

[0046] (2) Material cleaning and sandblasting: Use a 10mm×10mm×1mm sheet-shaped titanium substrate, ultrasonically clean it with acetone, ethanol and deionized water, and air dry; use brown corundum sand with a particle size of 350-500μm Sandblasting roughening treatment is carried out to improve the roughness of the substrate surface.

[0047] (3) Plasma spraying: use atmospheric plasma spraying equipment to prepare TiO on the surface of the substrate treated in step 2 2 / 50%SiO2 2 Composite coating, the spraying process is realized by controlling the following parameters: main gas Ar40L / min, auxiliary gas H 2 12L / min, spraying power 40kW, sprayin...

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Abstract

The invention relates to a preparation method of a porous TiO2 / SiO2 composite coating, and belongs to the field of medical biological ceramic coatings. The preparation method comprises the following steps of: preparing TiO2 / SiO2 composite powder used for spraying by a planetary ball milling mixing method; preparing a TiO2 / SiO2 composite coating by an air plasma spraying method; performing porous and bioactive treatment on the surface of the TiO2 / SiO2 composite coating in a hydrothermal etching treatment manner; and dipping into simulated body fluid to induce the formation of bone-like apatite. After dipping for 28 days, the bone-like apatite is generated on the surface of the TiO2 / SiO2 composite coating, but not appears on the surface of a TiO2 / SiO2 composite coating contrast. The prepared porous TiO2 / SiO2 composite coating is beneficial for enhancing the biological activity of an implant ceramic coating as well as improving the combination of bone tissue and the coating and can be used as a novel bioactive stone replacement material.

Description

technical field [0001] The invention relates to a method for preparing porous TiO with biological activity by hydrothermal etching 2 / SiO 2 Composite coating method, specifically related to preparation of bioactive porous TiO by plasma spraying and hydrothermal etching 2 / SiO 2 A composite coating method belongs to the field of medical bioceramic coatings. Background technique [0002] At present, plasma spraying coatings used in the field of bone replacement implants mainly include hydroxyapatite (HA) coatings, silicate ceramic coatings, titanium oxide coatings, etc.; hydroxyapatite (HA) coatings, Although the silicate ceramic coating has good biological activity, its bonding strength with the substrate is low, and it will degrade in the physiological environment, which will affect the stability of the coating after implantation in the body; TiO 2 The coating has good biocompatibility and excellent mechanical properties. It is an ideal bone replacement implant material ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/18C23C4/11A61L27/30A61L27/56
Inventor 赵晓兵程兴宝郑海
Owner 枣庄市新星钢结构有限公司