Method for preparing strontium-containing hydroxyapatite coating on surface of biodegradable magnesium alloy
A technology of strontium hydroxyapatite and magnesium alloy is applied in the field of preparation of strontium hydroxyapatite coating on the surface of biodegradable magnesium alloys, so as to improve corrosion resistance, good biocompatibility and osteoconductivity, and promote biodegradation. Bone effect
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Embodiment 1
[0024] (1) Cut the ZK60 magnesium alloy into moderate-sized samples with a wire cutting machine, and then polish them with 800#, 1500#, and 2000# alumina water-resistant sandpaper to remove the oxide layer on the surface of the magnesium alloy, then rinse with deionized water, and Place in absolute ethanol for ultrasonic cleaning for 15 minutes, then use 90% phosphoric acid and sodium hydroxide for pickling and alkali washing respectively, and dry at room temperature for later use;
[0025] (2) Preparation of Ca 2+ Concentration is 0.2mol / L, EDTA-2 sodium concentration is 0.2mol / L, P 5+ The concentration is 0.06mol / L, Sr 2+ The concentration is 0.005mol / L, and PH=10 is adjusted by sodium hydroxide. The calcium source of the solution is calcium nitrate tetrahydrate, the phosphorus source is sodium dihydrogen phosphate dihydrate, and the strontium source is strontium nitrate;
[0026] (3) Place the matrix sample obtained by the pretreatment in step (1) in the high-pressure hyd...
Embodiment 2
[0029] (1) Cut the ZK60 magnesium alloy into moderate-sized samples with a wire cutting machine, and then polish them with 800#, 1500#, and 2000# alumina water-resistant sandpaper to remove the oxide layer on the surface of the magnesium alloy, then rinse with deionized water, and Place in absolute ethanol for ultrasonic cleaning for 15 minutes, then use 90% phosphoric acid and sodium hydroxide for pickling and alkali washing respectively, and dry at room temperature for later use;
[0030] (2) Preparation of Ca 2+ Concentration is 0.2mol / L, EDTA-2 sodium concentration is 0.2mol / L, P 5+ The concentration is 0.06mol / L, Sr 2+The concentration is 0.005mol / L, and PH=10 is adjusted by sodium hydroxide. The calcium source of the solution is calcium nitrate tetrahydrate, the phosphorus source is sodium dihydrogen phosphate dihydrate, and the strontium source is strontium nitrate;
[0031] (3) Place the matrix sample obtained by the pretreatment in step (1) in the high-pressure hydr...
Embodiment 3
[0034] (1) Cut the ZK60 magnesium alloy into moderate-sized samples with a wire cutting machine, and then polish them with 800#, 1500#, and 2000# alumina water-resistant sandpaper to remove the oxide layer on the surface of the magnesium alloy, then rinse with deionized water, and Place in absolute ethanol for ultrasonic cleaning for 15 minutes, then use 90% phosphoric acid and sodium hydroxide for pickling and alkali washing respectively, and dry at room temperature for later use;
[0035] (2) Preparation of Ca 2+ Concentration is 0.2mol / L, EDTA-2 sodium concentration is 0.2mol / L, P 5+ The concentration is 0.06mol / L, Sr 2+ The concentration is 0.005mol / L, and PH=10 is adjusted by sodium hydroxide. The calcium source of the solution is calcium nitrate tetrahydrate, the phosphorus source is sodium dihydrogen phosphate dihydrate, and the strontium source is strontium nitrate;
[0036] (3) Place the matrix sample obtained by the pretreatment in step (1) in the high-pressure hyd...
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