A kind of zirconia ceramic bone implant prosthesis and preparation method thereof
A technology of zirconia ceramics and bone implantation, which is applied in the fields of prosthesis, tissue regeneration, and medical science. It can solve the problems of complex powder making process, difficult air discharge, and uneven green body, so as to achieve simple process flow and improve performance. , the effect of high production efficiency
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Embodiment 1
[0052] The first step, mixing zirconia powder, stabilizer A and silica sol (concentration is 10wt%), wet grinding 30h, obtains slurry; The addition amount of silicon oxide) is 5%, 3% respectively; Stabilizer A is yttrium oxide, particle diameter≤5μm; Zirconia fine powder purity is: ZrO 2 +HfO 2 ≥99.9wt%, particle size ≤74μm;
[0053] In the second step, water is added to the slurry, mixed evenly, and spray-dried to obtain particles;
[0054] The third step is to cool the particles in the mold at 250MPa to obtain a green body;
[0055] Step 4: After drying the green body, heat it at 1000°C for 5 hours to complete the pre-calcination to obtain the green body;
[0056] The fifth step is to sinter the biscuit in a microwave sintering furnace at 1200° C. for 1 hour to obtain zirconia ceramics, and finally process the zirconia ceramics to obtain the zirconia ceramic bone implant prosthesis.
Embodiment 2
[0058] The difference from Example 1 is that the amount of stabilizer A added is different, specifically as follows.
[0059] The first step is to mix zirconia powder, stabilizer A and silica sol, and wet grind for 30 hours to obtain a slurry; based on the weight of zirconia powder, the addition of stabilizer A and silica sol (calculated as silica) The amount is 8% and 3% respectively; the stabilizer A is yttrium oxide, the particle size is ≤5μm; the purity of the zirconia fine powder is: ZrO 2 +HfO 2 ≥99.9wt%, particle size ≤74μm;
[0060] In the second step, water is added to the slurry, mixed evenly, and spray-dried to obtain particles;
[0061] The third step is to cool the particles in the mold at 250MPa to obtain a green body;
[0062] Step 4: After drying the green body, heat it at 1000°C for 5 hours to complete the pre-calcination to obtain the green body;
[0063] The fifth step is to sinter the biscuit in a microwave sintering furnace at 1200° C. for 1 hour to ob...
Embodiment 3
[0065] The difference from Example 1 is that the amount of stabilizer A added is different, specifically as follows.
[0066] The first step is to mix zirconia powder, stabilizer A and silica sol, and wet grind for 30 hours to obtain a slurry; based on the weight of zirconia powder, the addition of stabilizer A and silica sol (calculated as silica) The amount is 10% and 3% respectively; the stabilizer A is yttrium oxide, the particle size is ≤5μm; the purity of the zirconia fine powder is: ZrO 2 +HfO 2 ≥99.9wt%, particle size ≤74μm;
[0067] In the second step, water is added to the slurry, mixed evenly, and spray-dried to obtain particles;
[0068] The third step is to cool the particles in the mold at 250MPa to obtain a green body;
[0069] Step 4: After drying the green body, heat it at 1000°C for 5 hours to complete the pre-calcination to obtain the green body;
[0070] The fifth step is to sinter the biscuit in a microwave sintering furnace at 1200° C. for 1 hour to o...
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