About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanocomposites VI: Nanoscience and Nanotechnology in Advanced Composites
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| Presentation Title |
Facile Low-temperature Sintering of Nano-bio-ceramic Composite with 2D Reinforcement |
| Author(s) |
Muhmood ul Hassan, Ahmad Raza, S.C. Yoo, Ho Jin Ryu |
| On-Site Speaker (Planned) |
Ho Jin Ryu |
| Abstract Scope |
Hydroxyapatite (HAp) and its composites are well known for their biocompatibility and recommended as bone implant and grafts. The nanoscale grain size is considered vital for higher bioactivity and cell-adhesion. The HAp-based monoliths are produced, conventionally, at higher sintering temperatures (≥ 900 °C), which has the challenges of increased grain-growth as well as decomposition to unwanted phases. This study demonstrated, for the first time, the low-temperature sintering of the hydroxyapatite-boron nitride nanoplates (HAp-BNNP) composite. The composite was cold-sintered at 200°C for 10 min without any additives. The sintered samples consist of nano-sized grains (10-20 nm) with the excellent interface between the matrix and 2D reinforcement. The nano-composite achieved 3.5 GPa micro-hardness with Young’s modulus of 65 GPa. The measured physical properties were comparable to high temperature sintered HAp. The composite showed good cell-adhesion and improved bioactivity, without having severe grain growth and changes in the stoichiometry. |
| Proceedings Inclusion? |
Planned: |