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Method for preparing calcium silicon phosphor biological ceramic coating through two steps and application

A bioceramic and coating technology, applied in the field of materials, can solve the problems of implantation failure, poor electrolyte stability, low biological activity, etc., and achieve the effect of good biological properties and good mechanical properties.

Active Publication Date: 2017-01-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some problems have also appeared in the actual application process: due to friction, wear and corrosion, some toxic ions (Ni 2+ 、Cr 3+ 、Cr 5+ and V 2+ etc.) or wear debris, which may lead to sensitization, carcinogenic and other toxic side effects, and even cause implant failure
However, the biomaterials prepared by the existing micro-arc oxidation technology generally have problems such as poor electrolyte stability, low biological activity, rapid coating degradation, and easy introduction of toxic ions during the preparation process, which may cause infection.

Method used

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  • Method for preparing calcium silicon phosphor biological ceramic coating through two steps and application
  • Method for preparing calcium silicon phosphor biological ceramic coating through two steps and application
  • Method for preparing calcium silicon phosphor biological ceramic coating through two steps and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] In this experiment, a self-made magnesium-zinc-calcium alloy was selected as the micro-arc oxidation matrix, and the main components of the matrix (%, mass fraction), as shown in Table 1 (Bal: is the balance):

[0070] Table 1

[0071]

[0072] The sample was cut into small pieces of 10×10×8mm, polished on 400#, 600# and 1200# sandpaper before the experiment, and then rinsed with alcohol and deionized water. The electrolyte composition of the test is 7.5g / L Na 2 SiO 3 9H 2 O, 0.125mol / L KOH, 0.087mol / L NH 4 HF 2 , 10ml / L glycerin. The equipment used is the WHD-30 micro-arc oxidation equipment of Harbin Institute of Technology. The micro-arc oxidation adopts constant voltage mode, using a forward voltage of 400V, a frequency of 600Hz, a positive duty cycle of 40%, a negative duty cycle of 30%, a ratio of positive and negative pulses of 1:1, and a power-on reaction of 7.5 minutes; the experiment During the process, the temperature is controlled at 10-30°C.

[0...

Embodiment 2

[0083] Different power frequency experiment plan

[0084] In this experiment, a self-made magnesium-zinc-calcium alloy was selected as the micro-arc oxidation matrix. The main components of the matrix are shown in Table 2 (% is the mass percentage, Bal.: is the balance):

[0085] Table 2

[0086]

[0087] The sample was cut into small pieces of 10×10×8mm, polished on 400#, 600# and 1200# sandpaper before the experiment, and then rinsed with alcohol and deionized water. The electrolyte composition of the test is 12.5g / L Na 2 SiO 3 9H 2 O, 0.125mol / L KOH, 0.087mol / L NH 4 HF 2 , 10ml / L glycerin. The equipment used is the WHD-30 micro-arc oxidation equipment of Harbin Institute of Technology. The micro-arc oxidation adopts constant voltage mode, using a forward voltage of 400V, a frequency of 600Hz, a positive duty cycle of 40%, a negative duty cycle of 30%, a ratio of positive and negative pulses of 1:1, and a power-on reaction of 7.5 minutes; the experiment During the...

Embodiment 3

[0100] Negative Voltage Experiment Protocol

[0101] In this experiment, self-made magnesium, zinc and calcium were selected as the micro-arc oxidation matrix, and the main components of the matrix are shown in Table 4 (% is mass percentage, Bal.: is the balance):

[0102] Table 4

[0103]

[0104] The sample was cut into small pieces of 10×10×8mm, polished on 400#, 600# and 1200# sandpaper before the experiment, and then rinsed with alcohol and deionized water. The electrolyte composition of the test is 12.5g / L Na 2 SiO 3 9H 2 O, 0.125mol / L KOH, 0.087mol / L NH 4 HF 2 and 10ml / L glycerin. The equipment used is the WHD-30 micro-arc oxidation equipment of Harbin Institute of Technology. The micro-arc oxidation adopts constant voltage mode, using a forward voltage of 400V, a frequency of 600Hz, a positive duty cycle of 40%, a negative duty cycle of 30%, a ratio of positive and negative pulses of 1:1, and a power-on reaction of 7.5 minutes; the experiment During the proc...

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Abstract

The invention discloses a method for preparing a calcium silicon phosphor biological ceramic coating through two steps and application. Magnesium and magnesium alloy base bodies are put into silicate electrolyte to be subjected to electrification electrolysis for a set time; then, a test specimen containing a silicon coating is put into calcium phosphor electrolyte to be subjected to electrification electrolysis; a target biological ceramic coating is obtained; the silicate electrolyte is prepared through adding silicate into basic electrolyte; the calcium phosphor electrolyte is prepared through adding calcium salts and (NaPO3)6 in basic electrolyte. The thickness of the calcium silicon phosphor coating prepared by the method is 30mum to 120mum; the coating comprises ingredients of MgO, MgF2, MgSO3, Ca2P4O7 and the like. The appearance of the surface of the ceramic coating can be changed by controlling the base body composition, the electrolyte ingredients and the electric parameters; the surface micropore dimension is controlled, so that the bone cell and bone tissue growth is facilitated in living body embedding experiments.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a two-step method and application for preparing a silicon-calcium-phosphorus bioceramic coating on the surface of a magnesium alloy. Background technique [0002] At present, with the continuous in-depth development of life science technology and new materials, biomedical materials, as one of the most important and active fields, are also booming, attracting more and more attention and attention from the material industry and clinical workers. Biomedical materials include metal materials, polymer materials, ceramic materials, composite materials, etc. Among them, metal materials were developed earlier. With their excellent mechanical strength and processing properties, as well as good fatigue resistance and biological stability, metal materials are widely used in clinical medicine. Especially for the repair and fixation or replacement of hard tissue systems such as...

Claims

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Application Information

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IPC IPC(8): C25D11/30A61L27/30A61L27/58A61L27/50A61L27/04A61L31/08A61L31/14A61L31/02
CPCA61L27/047A61L27/306A61L27/50A61L27/58A61L31/022A61L31/088A61L31/14A61L31/148A61L2400/18A61L2420/02A61L2420/06A61L2430/02C25D11/30
Inventor 陈传忠窦金河于慧君
Owner SHANDONG UNIV
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