Magnesium/hydroxyapatite composite material and preparation method thereof
A technology for hydroxyapatite and composite materials, which is applied in the field of preparing magnesium/hydroxyapatite composite materials by microwave sintering, can solve the problems of slow heating rate, large energy consumption and high equipment requirements, and achieves fast heating rate, The effect of low energy consumption and short sintering time
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[0017] Example 1:
[0018] (1) The powder is mixed by magnetic stirring. The total mass of the powder is 20g, the mass percentage of magnesium powder (purity 99.8%, particle size≤80μm), hydroxyapatite powder (purity 97.5%, particle size≤80μm) It is 19.5%, the stirring speed is 1200 rpm, and the magnetic stirring is 4 hours.
[0019] (2) Dry the mixed powder in step (1) in a vacuum drying oven for 2 hours at a drying temperature of 60 degrees Celsius.
[0020] (3) The mixed powder in step (2) is cold pressed in a mold, the size of the compressed sample is Φ11×12mm, the size of the bent sample is 30×5×4mm, and the pressure is 500MPa.
[0021] (4) A ceramic tube is placed in the glass tube, silicon carbide is used as an auxiliary heating material, and 5 grams of silicon carbide is placed between the ceramic tube and the glass tube. The sample is placed in a ceramic tube with an electrical insulating sheet at the bottom.
[0022] (5) The green body in step (3) is sintered in a vacuum micr...
Example Embodiment
[0024] Example 2:
[0025] (1) The powder is mixed by magnetic stirring. The total mass of the powder is 20g, the mass percentage of magnesium powder (purity 99.8%, particle size≤80μm), hydroxyapatite powder (purity 97.5%, particle size≤80μm) It is 5%, the stirring speed is 1200 rpm, and the magnetic stirring is 2 hours.
[0026] (2) Dry the mixed powder in step (1) in a vacuum drying oven for 2 hours, and the drying temperature is 100 degrees Celsius.
[0027] (3) The mixed powder in step (2) is cold pressed in a mold, the size of the compressed sample is Φ11×12mm, the size of the bent sample is 30×5×4mm, and the pressure is 450MPa.
[0028] (4) A ceramic tube is placed in the glass tube, silicon carbide is used as an auxiliary heating material, and 7 grams of silicon carbide is placed between the ceramic tube and the glass tube. The sample is placed in a ceramic tube with an electrical insulating sheet at the bottom.
[0029] (5) The green body in step (3) is sintered in a vacuum mi...
Example Embodiment
[0031] Example 3:
[0032] (1) The powder is mixed by magnetic stirring. The total mass of the powder is 20g, the mass percentage of magnesium powder (purity 99.8%, particle size≤80μm), hydroxyapatite powder (purity 97.5%, particle size≤80μm) It is 10%, stirring speed is 1200 rpm, magnetic stirring is 2 hours.
[0033] (2) Dry the mixed powder in step (1) in a vacuum drying oven for 2 hours, and the drying temperature is 100 degrees Celsius.
[0034] (3) The mixed powder in step (2) is cold pressed in a mold, the size of the compressed sample is Φ11×12mm, the size of the bent sample is 30×5×4mm, and the pressure is 600MPa.
[0035] (4) A ceramic tube is placed in the glass tube, silicon carbide is used as an auxiliary heating material, and 7 grams of silicon carbide is placed between the ceramic tube and the glass tube. The sample is placed in a ceramic tube with an electrical insulating sheet at the bottom.
[0036] (5) The green body in step (3) is sintered in a vacuum microwave sin...
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