Hydrothermal assisted sol-gel method for preparing fluorine doped hydroxyapatite/magnesium phosphate composite coating
A technology of hydroxyapatite and composite coating, which is applied in the field of biomedical materials to achieve the effect of simple process, high reliability and compact structure
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Embodiment 1
[0030] Process the AZ31 magnesium alloy into a block of 10mm×10mm×2mm, and use 240 # , 1200 # , 2000 # Polished with SiC sandpaper, then ultrasonically cleaned in acetone, deionized water, and ethanol for 10 minutes, and dried with hot air. Prepare 100 mL of 0.1 mol / L NaOH deionized aqueous solution. Soak the polished magnesium alloy in NaOH solution at 60° C. for 1 h, then rinse the magnesium alloy sample with deionized water and dry to obtain a pretreated magnesium alloy. With Ca(NO 3 ) 2 , NH 4 h 2 PO 4 , NH 4 F is the raw material to configure the solution separately, stir for 30min; NH 4 F solution was added dropwise to NH 4 h 2 PO 4 Stir in the solution for 30min; drop the solution containing F and P into Ca(NO 3 ) 2 Add ammonia water dropwise to the solution to keep the pH at 9, stir for 1 hour, and let stand for 12 hours to obtain a sol of the calcium phosphorus fluorine system. where Ca 2 + The concentration is 0.2mol / L, PO 4 3- The concentration is...
Embodiment 2
[0032] Process the AZ31 magnesium alloy into a block of 10mm×10mm×2mm, and use 240 # , 1200 # , 2000 # Polished with SiC sandpaper, then ultrasonically cleaned in acetone, deionized water, and ethanol for 10 minutes, and dried with hot air. Prepare 100 mL of 0.15 mol / L NaOH deionized aqueous solution. The polished magnesium alloy was soaked in NaOH solution and kept at 70°C for 1 hour, then the magnesium alloy sample was rinsed with deionized water and dried to obtain a pretreated magnesium alloy. With Ca(NO 3 ) 2 , NH 4 h 2 PO 4 , NH 4 F is the raw material to configure the solution separately, stir for 1h; NH 4 F solution was added dropwise to NH 4 h 2 PO 4 Stir in the solution for 1h; drop the solution containing F and P into Ca(NO 3 ) 2 Add ammonia water dropwise to the solution to maintain the pH at 10, stir for 2 hours, and let stand for 15 hours to obtain a sol of the calcium phosphorus fluoride system. where Ca 2+ The concentration is 0.2mol / L, PO 4 3...
Embodiment 3
[0034] Process the AZ31 magnesium alloy into a block of 10mm×10mm×2mm, and use 240 # , 1200 # , 2000 # Polished with SiC sandpaper, then ultrasonically cleaned in acetone, deionized water, and ethanol for 10 minutes, and dried with hot air. Prepare 100 mL of 0.2 mol / L NaOH deionized aqueous solution. The polished magnesium alloy was soaked in NaOH solution and kept at 80°C for 1 hour, then the magnesium alloy sample was rinsed with deionized water and dried to obtain a pretreated magnesium alloy. With Ca(NO 3 ) 2 , NH 4 h 2 PO 4 , NH 4 F is the raw material to configure the solution separately, stir for 1.5h; NH 4 F solution was added dropwise to NH 4 h 2 PO 4 Stir in the solution for 1.5h; drop the solution containing F and P into Ca(NO 3 ) 2 Add ammonia water dropwise to the solution to maintain the pH at 10, stir for 3 hours, and let stand for 18 hours to obtain a sol of the calcium phosphorus fluorine system. where Ca 2+ The concentration is 0.2mol / L, PO 4...
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