Magnesium alloy implant composite material and preparation method and application thereof
A composite material and magnesium alloy technology, applied in the field of magnesium alloy implant composite material and its preparation and application, can solve the problems of fast degradation, low adhesion of osteoblasts, poor corrosion resistance, etc.
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Embodiment 1
[0039] 1. Preparation of magnesium alloy implant matrix
[0040] (1) CT scanning of the patient's bone structure (GE LightSpeed 16-slice spiral CT) to collect damaged bone structure data and save the data in DICOM format;
[0041] (2) Input the obtained CT scan data into Materialize three-dimensional modeling software (MaterialiseMagics20), perform threshold division, and then use the region growing method to remove the noise of the imported image, remove redundant data, and segment the damaged bone structure region;
[0042] (3) Obtain the three-dimensional structural data of the damaged bone structure through the calculation of the Materialize three-dimensional modeling software, and then input the obtained three-dimensional data into the UG software (NX9.0) to obtain a digital three-dimensional model of the bone defect, and carry out the repair design of the bone defect;
[0043] (4) Use computer-aided software (CAD) (AutoCAD2010) to design the bone defect module accordin...
Embodiment 2
[0063] Steps (1)~(5) are identical with the conditions in Example 1;
[0064] Step (6) changes the composition of the micro-arc oxidation treatment liquid in the embodiment 1 step (6) into: 8g / L Na 2 SiO 3 , 10g / LNa 3 PO 4 , 8g / L NaOH, 3g / L KF, 3g / L Na 2 CO 3 , 1g / L KOH, 50mL / L absolute ethanol, the solvent is deionized water, and the pH value is natural. The control parameters of the micro-arc oxidation were changed to: the frequency is 550Hz, the micro-arc time is 15min, the duty cycle is 15%, and the current density is 15A / cm 2 , and other conditions remain unchanged; the magnesium alloy implant matrix / micro-arc oxidation film layer is obtained.
[0065] Step (7) changes the composition of the electrochemical deposition solution in the embodiment 1 step (7) to: 0.042mol / L Ca(NO 3 ) 2 , 0.5mol / L NaNO 3 , 0.025mol / L NH 4 h 2 PO 4 , 30mL / L absolute ethanol, 30mL / L hydrogen peroxide, 0.004mol / L alkylphenol polyoxyethylene ether OP-21, 0.1mol / L trisodium citrate, 0.0...
Embodiment 3
[0069] Steps (1)~(5) are identical with the conditions in Example 1;
[0070] Step (6) changes the composition of the micro-arc oxidation treatment liquid in the embodiment 1 step (6) into: 12g / L Na 2 SiO 3 , 12g / L Na 3 PO 4 , 10g / L NaOH, 7g / L KF, 8g / L Na 2 CO 3 , 5g / L KOH, 100mL / L absolute ethanol, the solvent is deionized water, and the pH value is natural. The control parameters of micro-arc oxidation are changed to: frequency is 650Hz, micro-arc time is 30min, duty cycle is 30%, current density is 20A / cm 2 , and other conditions remain unchanged; the magnesium alloy implant matrix / micro-arc oxidation film layer is obtained.
[0071] Step (7) changes the composition of the electrochemical deposition solution in the embodiment 1 step (7) to: 0.042mol / L Ca(NO 3 ) 2 , 0.5mol / L NaNO 3 , 0.025mol / L NH 4 h 2 PO 4 , 50mL / L absolute ethanol, 50mL / L hydrogen peroxide, 0.006mol / L alkylphenol polyoxyethylene ether OP-21, 0.2mol / L trisodium citrate, 0.0008mol / L NaF, the sol...
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