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Method for preparing bioceramic membrane

A bioceramic membrane and solution technology, applied in medical science, phosphating, prosthesis, etc., can solve the problems of complicated preparation process, complicated preparation process, poor biological activity, etc., and achieve the effect of good biological activity and high bonding strength.

Inactive Publication Date: 2005-06-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, they prepare CTZP coatings by plasma spraying method, and there are inevitably disadvantages of plasma spraying.
Moreover, the preparation process of CZTP is extremely cumbersome, including: mixing materials - adding phosphoric acid - drying - grinding - stepwise heating and roasting - cooling and crushing - thermal spraying and other series of processes
[0015] In summary, there is no interface between the coating and the substrate prepared by the micro-arc oxidation method, and the bonding strength is high, but the biological activity is poor; while the CZTP-based bioceramic coating has matching thermal expansion, stable chemical properties, and good biological activity, but The preparation process is complicated

Method used

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  • Method for preparing bioceramic membrane
  • Method for preparing bioceramic membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1. use sodium hexametaphosphate (NaPO 3 ) 6 150g / l, calcium chloride CaCl 2 2H 2 O 15g / l, pH 9 solution, titanium as anode, stainless steel as cathode, DC power supply 150V, current density 50mA / cm 2, micro-arc oxidation for 30 minutes under the condition of pole distance of 10 cm, a porous layer with a thickness of about 50 μm is formed on the titanium surface, and the scanning electron microscope photo is as attached figure 1 ; X-ray diffraction analysis shows that the coating is composed of titanium dioxide and CTP, with a bonding strength of 44.7MPa. It is soaked in artificial body fluid for 11 days to induce the deposition of hydroxyapatite, which has good biological activity.

Embodiment 2

[0030] Embodiment 2. use sodium hexametaphosphate (NaPO 3 ) 6 90g / l, calcium chloride CaCl 2 2H 2 O 10g / l, pH 10 solution, titanium as anode, stainless steel as cathode, DC power supply 140V, current density about 45mA / cm 2 , micro-arc oxidation for 40min under the condition of pole distance of 10cm forms a porous layer with a thickness of about 45μm on the titanium surface. X-ray diffraction analysis shows that the coating is composed of titanium dioxide and CTP, and hydroxyapatite is induced to deposit after soaking in artificial body fluid for 13 days, which has good biological activity.

Embodiment 3

[0031] Embodiment 3. use sodium hexametaphosphate (NaPO 3 ) 6 10g / l, calcium chloride CaCl 2 2H 2 O 1.5g / l, pH 10 solution, titanium as anode, stainless steel as cathode, DC power supply 250V, current density 100mA / cm 2 , micro-arc oxidation for 30 minutes under the condition of pole distance of 10 cm, a porous layer with a thickness of about 50 μm is formed on the titanium surface, and the scanning electron microscope photo is as attached figure 2 ; X-ray diffraction analysis shows that the coating is composed of titanium dioxide, CTP, CaHPO 4 2H 2 Composed of O, with a binding strength of 37.3MPa, hydroxyapatite is induced to be deposited by immersion in artificial body fluid for 5 days, and has good biological activity.

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Abstract

A process for preparing the CaO-TiO2-ZrO2-P2O5 series bioceramic film on the surface of Ti or Ti-alloy material in order to provide the substitute for reparing the human hard tissue (femur, hip joint, etc) features sue of microarc oxidizing technique, in which Ti or Ti-alloy is used as anode, stainless steel or Ti is used as cathode, and DC power supply or DC pulsive power supply is used. Its advantages are high bioactivity, high adhesion and high chemical stability.

Description

Technical field: [0001] The invention relates to the preparation of bioactive coatings on the surface of titanium-based medical metal materials, in particular to a method of preparing CaO-TiO on the surface of titanium or titanium alloy hard tissue repair and replacement materials using micro-arc oxidation technology 2 -ZrO 2 -P 2 o 5 (abbreviated as CTZP) is a bioceramic membrane, which can be effectively used as a substitute material for parts that are subjected to heavy loads such as femurs, hip joints, and tooth roots. Background technique: [0002] The materials used for hard tissue repair and replacement are not only required to be non-toxic and have no side effects, but also to have sufficient mechanical strength and be able to be firmly combined with the original bone. [0003] The ideal combination between bone replacement materials and bone tissue is bone bonding, which forms a continuous and gradient interface structure between the implant and bone, and only ma...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/32C25D11/36
Inventor 赵中伟霍广生
Owner CENT SOUTH UNIV
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