Bionics method preparation of pure magnesium surface agustite coating

An apatite, pure magnesium technology, applied in coatings, medical science, bone implants, etc., can solve the problems of unsatisfactory biological properties, poor wear resistance and corrosion resistance, etc.

Inactive Publication Date: 2008-08-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its biological performance is unsatisfactory, coupled with its poor wear resistance and corrosion resistance, it has become a shortcoming in the application of this material in the field of medical engineering.

Method used

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  • Bionics method preparation of pure magnesium surface agustite coating
  • Bionics method preparation of pure magnesium surface agustite coating
  • Bionics method preparation of pure magnesium surface agustite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 prepares apatite coating on pure magnesium surface

[0022] The preparation method steps are:

[0023] (1) Preparation and pretreatment of pure magnesium substrate, cutting the as-cast pure magnesium with a purity of 99.9% into volumes of 10×10×5mm 3 The sheet (substrate), and then use 200#, 400# water sandpaper to polish the surface. Ultrasonic clean the polished sample in distilled water, anhydrous acetone, and distilled water for 10 minutes in sequence, take it out after completion, and air dry it for later use;

[0024] (2) Immerse the pure magnesium substrate cleaned and dried in step (1) into 1mol / L HCl solution, take it out after acid etching for 3min, clean it in distilled water, and air-dry it for later use;

[0025] (3) Soak the pure magnesium substrate cleaned and dried in step (2) in 0.5mol / L NaOH solution at a temperature of 100° C., take it out after 30 minutes, clean it with distilled water, and air-dry it for later use;

[0026] (4) Pre-c...

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Abstract

The invention provides a method for preparing an apatite coating on a pure magnesium surface. The specific proposal is adopting a two-step acid and alkali method, which comprises the steps of activating the surface of a buffed and cleaned pure magnesium substrate, soaking the substrate in the solvent of CaCl2 and K2HPO4 for pre-calcification treatment, forming a layer of unformed calcium phosphate on the pure magnesium surface, putting the pure magnesium substrate into a calcium phosphorus saturated solution for certain time, and forming a layer of even apatite coating on the surface of the pure magnesium substarte.

Description

technical field [0001] The invention relates to a method for preparing an apatite coating on the surface of pure magnesium. Background technique [0002] Due to their good mechanical properties and machinability, biomedical metal materials play an important role in replacing and repairing human hard tissues. However, its biological performance is unsatisfactory, coupled with its poor wear resistance and corrosion resistance, it has become a shortcoming in the application of this material in the field of medical engineering. The composite material prepared by coating hydroxyapatite (Hydroxyapatite, HA) on the surface of the metal matrix comprehensively utilizes the excellent mechanical properties of metal materials and the excellent biological properties of hydroxyapatite, and is an ideal bone substitute material. [0003] At present, there are many methods for preparing apatite coating, such as: plasma spraying method (China application number: 99124034.0, 03117835.9, 20051...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/32A61L27/04A61F2/28
Inventor 王欣宇龚沛李世普闫玉华陈晓明韩颖超江昕李建华
Owner WUHAN UNIV OF TECH
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