| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Processing, Microstructure Characterization and Biological Response of Cold Sprayed Biocomposite Coatings |
| Author(s) |
Eden Bhatta, Grant A Crawford |
| On-Site Speaker (Planned) |
Eden Bhatta |
| Abstract Scope |
Hydroxyapatite (HA) is commonly used in bioactive coatings to facilitate direct bonding of titanium (Ti) implants with living bone tissue. The coating encourages rapid osseointegration behavior which is suggested to prolong implant lifespan. Cold sprayed coatings of HA on Ti implants have the potential to overcome some of the disadvantages of plasma sprayed HA coatings. We report on the relationship between processing, microstructure characterization, and biological performance of biocomposite cold sprayed coatings. HA-Ti powders were pre-processed using high energy ball milling (HEBM) that allows formation of composite powders and improves deposition efficiency during cold spray deposition. Milled powders and as-processed coatings were characterized using scanning electron microscopy and x-ray diffraction. Adhesion strength of the coatings was measured using a tensile pull-off test. Biological performance of the as-deposited coatings was characterized via in vitro cell culture using mouse osteoblasts. Osteoblast viability, differentiation, and mineral deposition were investigated. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |