Microwave preparation method of flower-shaped hydroxyapatite coating layer on surface of magnesium alloy
A flower-like hydroxyapatite, magnesium alloy technology, applied in metal material coating technology, coating, medical science and other directions, can solve the problem of not having nanostructure, and achieve to improve biological activity, improve corrosion resistance, and promote adhesion. The effect of adhering to growth
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Embodiment 1
[0036] (1) Process the AZ31 magnesium alloy into a block of 10mm×10mm×2mm, and use 240 # , 1200 # , 2000 # SiC sandpaper, then ultrasonically cleaned in acetone, deionized water, and ethanol for 10 min, and dried with hot air.
[0037] (2) Prepare 150 mL of 2 mol / L NaOH deionized aqueous solution. The polished magnesium alloy was soaked in NaOH solution for 1 h at 60 °C, and then the magnesium alloy sample was rinsed with deionized water and dried.
[0038] (3) With Ca(NO 3 ) 2 Preparation of Ca for Ca sources 2+ Aqueous solution, with Na 2 HPO 4 Preparation of PO for P source 4 3- aqueous solution. Then put the PO 4 3- Aqueous solution added Ca dropwise 2+ In the aqueous solution, the pH value of the mixed solution was adjusted to 6 with 20M dilute nitric acid, and the solution was magnetically stirred for 1 h. Among them, Ca in the mixed solution 2+ The concentration of 6mmol / L, PO 4 3- The concentration of 2mmol / L. Weigh 100 mL of the mixed solution as the...
Embodiment 2
[0042] (1) Process the AZ91 magnesium alloy into a block of 10mm×10mm×2mm, and use 240 # , 1200 # SiC sandpaper was polished, then ultrasonically cleaned in acetone, deionized water, and ethanol for 6 min, and dried with hot air.
[0043] (2) Prepare 150 mL of 3 mol / L NaOH deionized aqueous solution. The polished magnesium alloy was soaked in NaOH solution for 1 h at 70 °C, and then the magnesium alloy sample was rinsed with deionized water and dried.
[0044] (3) with CaCl 2 Preparation of Ca for Ca sources 2+ Aqueous solution with NaH 2 PO 4 Preparation of PO for P source 4 3- aqueous solution. Then put the PO 4 3- Aqueous solution added Ca dropwise 2+ In the aqueous solution, finally, the pH value of the mixed solution was adjusted to 5 with 15M dilute hydrochloric acid, and the mixture was magnetically stirred for 1.5h. Among them, Ca in the mixed solution 2+ The concentration of 4mmol / L, PO 4 3- The concentration of 2mmol / L. Weigh 100 mL of the mixed solut...
Embodiment 3
[0048] (1) AZ61 is used as the magnesium alloy matrix, and 240 is used in turn. # , 1200 # , 1500 # SiC sandpaper was polished, then ultrasonically cleaned in acetone, deionized water, and ethanol for 8 min in turn, and dried with hot air.
[0049] (2) Prepare 150 mL of 1 mol / L NaOH deionized aqueous solution. The polished magnesium alloy was soaked in NaOH solution for 1 h at 80 °C, and then the magnesium alloy sample was rinsed with deionized water and dried.
[0050] (3) with Ca(CH 3 COO) 2 Preparation of Ca for Ca sources 2+ Aqueous solution with NaH 2 PO 4 Preparation of PO for P source 4 3- aqueous solution. Then put the PO 4 3- Aqueous solution added Ca dropwise 2+ In the aqueous solution, the pH value of the mixed solution was adjusted to 5.5 with 8M acetic acid and magnetically stirred for 2h. Among them, Ca in the mixed solution 2+ The concentration of 5mmol / L, PO 4 3- The concentration of 1.5mmol / L. Weigh 100 mL of the mixed solution as the convers...
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