1. Organic
edifice realisation
the first step consists in the product’s edifice realization. This edifice is marble in PMMA assembly diving in acetone. Then, it’s possible to influence two parameters :
- – Macro-porous’ size depending to marble size;
- – Network size depending to duration of marble dissolution in acetone.
- After, that edifice is cleaning for remove all acetone’s mark.
2. Slurry
realisation
This is during this stage that the chemical composition is made. Slurry is made from mix with HA, β-TCP, water and organics additive. Here, it’s possible to modify the substitute resorption, more HA are present, more the time will be long (15-20 year for 100% HA), more β-TCP are present more the time will be (3-4 years for 100%). All of this is mixed for obtain slurry.
3. Slurry
pouring
During this stage, the slurry is flowing on the edifice. Then all dry to let the assembly to become solid. After this, the excess are cleaned to make pores in next step appear.
4. Passing in oven
at low temperature
The assembly are placed in a first oven with a temperature between 200 °C and 300°C during around 48h. The operation objective is to do to disappear by evaporation PMMA marble, this is that create macro-porous and network between this.
5. Sintering
After, the elements are placed in another oven, with a temperature between 1000°C and 1200 °C, during around 24h. The operation objective is to consolidate the ceramic.
6. Packing
The substitutes are realized, we need to pack. The produce is placed in a double sheath flat shims, all of this in “clean” room.
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