| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10135578 | Materials Chemistry and Physics | 2018 | 25 Pages |
Abstract
Natural Hydroxyapatite (HA)- Nitinol (NiTi) nanocomposites with different percentage of NiTi were fabricated by powder metallurgy. The structural stability of HA phase in HA- NiTi samples and mechanical strength of nanocomposites were studied by FTIR, XRD and compression test. In addition, biological behavior of the composites were investigated by in vitro studies. The existence of NiTi metal phase can promote dehydration and decomposition of HA ceramic phase into more stable calcium phosphate phases at high temperatures. According to results that obtained, the nanocomposite sample with 10â¯wt% NiTi has the maximum compressive strength (67.67â¯MPa) compare to pure HA ceramic (46â¯MPa) that manufactured under the same condition. Crack deflection is the chief strength mechanism in the nanocomposites. in vitro studies showed that MG-67 osteoblast cells attached and spread on the surface of the sample. The results revealed that nanocomposite with 10â¯wt% NiTi has a good mechanical strength and suitable biological behavior that can be used in medical applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Samaneh Kamali, Sepideh Shemshad, Alireza Khavandi, Shahram Azari,