Shaping method of nanometer bioceramic artificial joint

[0016] Specific implementation mode 1: In this implementation mode, the preparation and forming process of nano-biological ceramic materials are completed according to the following steps:

[0017] 1. Preparation of Al by alcohol-water solution heating method 2 o 3 , ZrO 2 Nano powder. When the alcohol-water solution is heated, a gel-like precipitate is produced in the solution, and the following hydrolysis reaction occurs:

[0018] (1),

[0019] (2).

[0020] Al(NO 3 ) 3 9H 2 O, ZrOCl 2 ·8H 2 O and Y (NO 3 ) 3 ·6H 2 O is formulated into a mixed solution with a certain molar concentration by molar ratio, adding absolute ethanol at a ratio of alcohol to water of 5:1, and adding a certain amount of polyethylene glycol 200 and polyethylene glycol 1540 as a dispersant. The solution was placed in a constant temperature water bath and slowly heated to 75°C, and kept at this temperature for 6 hours to obtain a white sol. Using NH 4 HCO 3 As a precipitating ag

[0028] Specific implementation mode two: this implementation mode completes the preparation and forming process of nano-biological ceramic materials according to the following steps:

[0029] 1. Prepare hydroxyapatite HAP powder by chemical precipitation method.

[0030] The chemical reaction equation of hydroxyapatite is as follows:

[0031] (3),

[0032] (4),

[0033] (5).

[0034] The overall equation is:

[0035] (6).

[0036] Prepare a certain concentration of (NH 4 ) 2 HPO 4 solution and Ca(NO 3 ) 2 solution. where Ca(NO 3 ) 24H 2 O prepared with absolute ethanol, (NH 4 ) 2 HPO 4 Prepare with deionized water. According to formula (6), the two solutions are chemically reacted. Ca(NO 3 ) 2 solution, and then add a small amount of (NH 4 ) 2 HPO 4 solution, to generate HAP crystal nuclei in the reaction mixture, and then dropwise add (NH 4 ) 2 HPO 4 Solution, along with the progress of the reaction, add ammonia water dropwise at

[0044] Embodiment 3: This embodiment is different from Embodiment 1 and Embodiment 2 in that, according to the different ratios of materials, the composition ratio of nano-biological ceramics is shown in Table 3.

[0045] Al 2 o 3

[0046] Note: Al 2 o 3 : ZrO 2 is the mole fraction ratio; ZrO 2 : HAP is the mass fraction ratio.