| 에어로졸 증착법에 의해 티타늄 기판위에 제조된 다중벽 탄소나노튜브 강화 수산화아파타이트 코팅층 |
| 한병동, 박동수, 류정호, 최종진, 윤운하, 이병국, 김현이1 |
한국기계연구원 부설 재료연구소 분말재료연구부 기능세라믹연구그룹
1서울대학교 재료공학부 |
| Multi-walled Carbon Nanotube-Reinforced Hydroxyapatite Coating on Ti Substrates by Aerosol Deposition |
| Byung-Dong Hahn, Dong-Soo Park, Jung-Ho Ryu, Jong-Jin Choi, Woon-Ha Yoon, Byung-Kuk Lee, Hyoun-Ee Kim1 |
Functional Ceramics Research Group, Department of Powder Materials, Korea Institute of Materials Science
1School of Materials Science and Engineering, Seoul National University |
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| ABSTRACT |
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Multi-walled carbon nanotube(CNT) reinforced hydroxyapatite composite coating with a thickness of $5{mu}m$ has been successfully deposited on Ti substrate using aerosol deposition(AD). The coating had a dense microstructure with no cracks or pores, showing good adhesion with the Ti substrate. Microstructural observation using field-emission scanning electron microscopy(FE-SEM) and transmission electron microscopy(TEM) showed that CNTs with original tubular morphology were found in the hydroxyapatite-CNT(HA-CNT) composite coating. Measurements of hardness and elastic modulus for the coating were performed by nanoindentation tests, indicating that the mechanical properties of the coating were remarkably improved by the addition of CNT to HA coating. Therefore, HA-CNT composite coating produced by AD is expected to be potentially applied to the coating for high load bearing implants. |
| Key words:
Multi-walled carbon nanotube(CNT), Aerosol deposition(AD), HA-CNT composite coating, Hardness, Elastic modulus, Nanoindentation |
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