Titanium dioxide ceramic material prepared by a sol-gel method

A ceramic material, titanium dioxide technology, applied in anodizing, ceramic products, metal material coating process and other directions, can solve the problems of poor compactness, corrosion resistance can not meet the needs of use

Active Publication Date: 2021-09-07
XIANGYA HOSPITAL CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since most of the films prepared by the sol-gel method are porous, their compactness is poor, which makes the corrosion resistance of the sol-gel coating unable to meet the needs of use in specific scenarios

Method used

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  • Titanium dioxide ceramic material prepared by a sol-gel method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sol-gel method prepares titanium dioxide ceramic material, comprises the following steps:

[0023] A. Using medical magnesium alloy as the substrate material, the magnesium alloy is cut into a size of 6×6×2mm;

[0024] B. Carry out pretreatment to magnesium alloy, and pretreatment includes degreasing, pickling, cleaning and drying, and wherein degreasing selects the sodium carbonate solution that concentration is 10%, and pickling selects concentration and is 15% hydrochloric acid solution, and cleaning process is anhydrous Ultrasonic cleaning with ethanol, drying under nitrogen atmosphere;

[0025] C. Preparation of micro-arc oxidation layer: with magnesium alloy as the anode, at 10A·dm -2 Under the conditions of constant current density, pulse frequency 450Hz, duty cycle 40%, termination voltage 400V, and time 10min, the magnesium alloy micro-arc oxidation layer was prepared, wherein the composition of the electrolyte was sodium hexametaphosphate 35g / L, hydrogen Pot...

Embodiment 2

[0031] Sol-gel method prepares titanium dioxide ceramic material, comprises the following steps:

[0032] A. Using medical magnesium alloy as the substrate material, the magnesium alloy is cut into a size of 6×6×2mm;

[0033] B. Carry out pretreatment to magnesium alloy, and pretreatment includes degreasing, pickling, cleaning and drying, and wherein degreasing selects the sodium carbonate solution that concentration is 10%, and pickling selects concentration and is 15% hydrochloric acid solution, and cleaning process is anhydrous Ultrasonic cleaning with ethanol, drying under nitrogen atmosphere;

[0034] C. Preparation of micro-arc oxidation layer: with magnesium alloy as the anode, at 10A·dm -2 Under the conditions of constant current density, pulse frequency 450Hz, duty cycle 40%, termination voltage 400V, and time 10min, the magnesium alloy micro-arc oxidation layer was prepared, wherein the composition of the electrolyte was sodium hexametaphosphate 35g / L, hydrogen Pot...

Embodiment 3

[0040] Sol-gel method prepares titanium dioxide ceramic material, comprises the following steps:

[0041] A. Using medical magnesium alloy as the substrate material, the magnesium alloy is cut into a size of 6×6×2mm;

[0042]B. Carry out pretreatment to magnesium alloy, and pretreatment includes degreasing, pickling, cleaning and drying, and wherein degreasing selects the sodium carbonate solution that concentration is 10%, and pickling selects concentration and is 15% hydrochloric acid solution, and cleaning process is anhydrous Ultrasonic cleaning with ethanol, drying under nitrogen atmosphere;

[0043] C. Preparation of micro-arc oxidation layer: with magnesium alloy as the anode, at 10A·dm -2 Under the conditions of constant current density, pulse frequency 450Hz, duty cycle 40%, termination voltage 400V, and time 10min, the magnesium alloy micro-arc oxidation layer was prepared, wherein the composition of the electrolyte was sodium hexametaphosphate 35g / L, hydrogen Pota...

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Abstract

A titanium dioxide ceramic material prepared by a sol-gel method, and rare earth elements cerium and yttrium are doped on the surface of titanium dioxide porous ceramics by an ion implantation method. In essence, ion implantation of rare earth elements can play a role in sealing pores. After ion implantation, TiO is formed on the surface or near-surface area of ​​titania ceramics. 2 ‑Ce‑Y composite ceramic material with improved corrosion resistance of porous titanium dioxide. It is worth noting that the injection amount of rare earth elements needs to be controlled within a reasonable range. If the injection amount of rare earth elements is too large, a Ce-Y film will be formed on the surface of the titania ceramic. Pore ​​effect, which is not conducive to the improvement of the corrosion resistance of porous titanium dioxide ceramic materials.

Description

technical field [0001] The invention relates to the field of ceramic materials, in particular to a titanium dioxide ceramic material prepared by a sol-gel method. Background technique [0002] In the fields of orthopedics, oral surgery, and thoracic surgery, high-strength materials required for fracture repair and chest support are called bone fixation materials. There are many types of bone fixation materials, such as needle-shaped and plate-shaped, which play the role of auxiliary connection between bone blocks. At present, the elastic modulus of widely used stainless steel and titanium alloy is much higher than that of human bone, and the resulting stress shielding effect is not conducive to bone growth and healing. The elastic modulus of magnesium alloy is close to that of human bone, which can effectively alleviate the stress shielding effect. Magnesium alloy can provide stable mechanical properties in the early stage of fracture healing, gradually reduce its stress s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/46C04B35/624C04B38/00C04B41/85A61L31/08A61L31/02A61L31/14C23C18/12C25D11/30C23C14/48
CPCA61L31/022A61L31/088A61L31/14A61L2400/18A61L2420/06A61L2420/08C04B35/46C04B35/62222C04B35/624C04B38/0045C04B41/0027C04B41/009C04B41/5045C04B41/85C04B2235/3225C04B2235/3229C23C14/48C23C18/1216C23C18/1254C23C18/1295C25D11/024C25D11/026C25D11/30
Inventor 朱剑熹韩斐刘俊彦朱勇罗浩郭斌胡懿郃
Owner XIANGYA HOSPITAL CENT SOUTH UNIV
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