A kind of preparation method of carbon/carbon composite material containing silicon hydroxyapatite coating

A technology of silicon hydroxyapatite and carbon composite materials, which is applied in metal material coating technology, coating, medical science, etc., can solve the problems of peeling failure, high C/C density, etc., and achieve good crystallinity and high hardness and the effect of binding strength

Inactive Publication Date: 2011-11-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The induction thermal deposition / hydrothermal method can not only prepare crystallinity HA coatings on complex profiles, but also the bonding strength between the coating and the C / C substrate can reach a critical load of 51N and a shear strength of 125.7MPa, but the required C / C The density is high, once the HA coating fails, the failure position is at the interface, and the peeling failure occurs (X.B Xiong, C.L Zou, X.R Zeng, P L, Y.B Fan, H.L Tang, H.X Sheng, Mater.Sci Eng: C .2009, (29): 2019-2023)

Method used

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  • A kind of preparation method of carbon/carbon composite material containing silicon hydroxyapatite coating
  • A kind of preparation method of carbon/carbon composite material containing silicon hydroxyapatite coating

Examples

Experimental program
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Effect test

Embodiment 1

[0023] 1) At first, add the sodium perchlorate solution that concentration is 0.5mol / L in hydrothermal kettle, then make the density be 1.3g / cm 3 The carbon / carbon composite material was placed in a hydrothermal kettle, hydrothermally treated at 80°C for 24 hours, then taken out, ultrasonically cleaned with distilled water, and dried;

[0024] 2) Place the carbon / carbon composite material treated in step 1) in a mixed aqueous solution containing 0.15 mol / L calcium acetate and 0.1 mol / L ammonium dihydrogen phosphate at a flow rate of 200 ml / min, and pass the oscillation frequency at 1.1 MHz, an ultra-high frequency induction heating power supply with an oscillating current of 300A heats the carbon / carbon composite material, and deposits for 1.5 hours to deposit a calcium hydrogen phosphate coating on the surface;

[0025] 3) Place the carbon / carbon composite material deposited with the calcium hydrogen phosphate coating obtained in step 2) in an aqueous ammonia solution with a ...

Embodiment 2

[0028] 1) At first, add the sodium perchlorate solution that concentration is 1.5mol / L in hydrothermal kettle, then make the density be 1.5g / cm 3 The carbon / carbon composite material was placed in a hydrothermal kettle, hydrothermally treated at 100°C for 20 hours, then taken out, ultrasonically cleaned with distilled water and dried;

[0029] 2) Place the carbon / carbon composite material treated in step 1) in a mixed aqueous solution containing 0.3 mol / L calcium acetate and 0.08 mol / L ammonium dihydrogen phosphate at a flow rate of 800 ml / min, and pass the vibration frequency at 1.1 MHz, an ultra-high frequency induction heating power supply with an oscillating current of 500A heats the carbon / carbon composite material, and deposits for 1 hour to deposit a calcium hydrogen phosphate coating on the surface;

[0030] 3) Place the carbon / carbon composite material deposited with the calcium hydrogen phosphate coating obtained in step 2) in an aqueous ammonia solution with a mass ...

Embodiment 3

[0033] 1) At first, add a sodium perchlorate solution with a concentration of 1.0mol / L in the hydrothermal kettle, and then add a solution with a density of 1.4g / cm 3 The carbon / carbon composite material was placed in a hydrothermal kettle, hydrothermally treated at 120°C for 12 hours, then taken out, ultrasonically cleaned with distilled water, and dried;

[0034]2) Place the carbon / carbon composite material treated in step 1) in a mixed aqueous solution containing 0.05 mol / L calcium acetate and 0.03 mol / L ammonium dihydrogen phosphate at a flow rate of 1.5 L / min. 1.1MHz, an ultra-high frequency induction heating power supply with an oscillating current of 600A heats the carbon / carbon composite material, and deposits it for 2 hours to deposit a calcium hydrogen phosphate coating on the surface;

[0035] 3) Place the carbon / carbon composite material deposited with the calcium hydrogen phosphate coating obtained in step 2) in an aqueous ammonia solution with a mass concentratio...

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Abstract

The invention provides a preparation method of a silicon-containing hydroxyapatite coating of a carbon / carbon composite material. The preparation method comprises the following steps: placing a low-density carbon / carbon composite material in a hydrothermal kettle containing a sodium perchlorate solution for hydrothermal treatment, and then washing with distilled water and drying the carbon / carboncomposite material; placing the treated carbon / carbon composite material in a flowable aqueous solution containing calcium nitrate and ammonium dihydrogen phosphate, and precipitating out a calcium hydrophosphate coating on the surface of the carbon / carbon composite material through an ultra-high frequency electromagnetic induced heating method; then placing the calcium hydrophosphate coating of the carbon / carbon composite material in the hydrothermal kettle containing an ammonia water aqueous solution for hydrothermal treatment so as to obtain the hydroxyapatite coating of the carbon / carbon composite material; and subsequently, placing the hydroxyapatite coating of the carbon / carbon composite material in the hydrothermal kettle containing a sodium silicate aqueous solution for hydrothermal treatment again so as to obtain the silicon-containing hydroxyapatite coating of the carbon / carbon composite material. By using the method, the silicon-containing hydroxyapatite coating with good crystallinity, high bonding strength up to critical load 143 N and Vickers hardness 2.3 can be prepared on the surface of the low-density carbon / carbon composite material.

Description

field of invention [0001] The invention relates to a preparation method of a carbon / carbon composite material hydroxyapatite coating, in particular to a preparation method of a carbon / carbon composite material silicon-containing hydroxyapatite coating. Background technique [0002] Bone implant materials are an important part of biomedical materials. The aging trend of the population is intensifying, coupled with traffic accidents, accidental injuries, lesions and other reasons, the market demand for orthopedic implant materials is increasing rapidly. Traditional autologous bone grafting and allogeneic bone grafting are common methods for treating bone defects. However, autologous bone transplantation has disadvantages such as limited sources, affecting the function of the donor site, increasing surgical pain, and susceptibility to infection; while allogeneic bone transplantation has disadvantages such as difficulty in obtaining timely and possible infectious diseases (Hu K...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12A61L27/40
Inventor 熊信柏黄剑锋曾燮榕邹继兆曹丽云王勇
Owner SHAANXI UNIV OF SCI & TECH
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