| Comparative Analysis of Novel Calcium Phosphate Based
Machinable Bioceramic Composites |
Rupita Ghosha, b,* and Ritwik Sarkarc
Pages : 131-138
DOI : 10.1080/0371750X.2020.1773931 |
| Abstract |
| Calcium phosphate is widely used as an implant material in the biomedical
field, mainly because they are chemically similar to the inorganic components
of bones. In many applications, dimensional accuracy is critical, and implants
need to be shaped, sized and machined as needed. However, as ceramic
materials with strong atomic bonding forces, they have high hardness and
brittleness, so the ability to shape the precise dimensions required for many
critical surgical applications is limited. Therefore, these ceramic-based
materials cannot compete with other metal or polymer-based systems, and
are not very popular in such applications with dimensional accuracy.
Therefore, novel machinable ceramic composite materials based on calcium
phosphate, viz. hydroxyapatite and ?-tricalcium phosphate, containing rare
earth phosphates have been manufactured, and their phases, microstructure,
mechanical, machining and biological activities have been studied.
[Keywords: Bioceramics, Calcium phosphate, Hydroxyapatite, ?-tricalcium
phosphate, Composites, Machinability] |
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