| 학회 |
한국재료학회 |
| 학술대회 |
2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 |
13권 2호 |
| 발표분야 |
나노생체재료 |
| 제목 |
Sol-Gel법에 의한 calcium titanate buffer layer processe와 Hydroxyapatite 코팅 |
| 초록 |
The present study evaluates this effect of a (CaTiO3: CTO) intermediate coating on the bonding strength of HA to Ti6Al4V (TAV) substrate. The CTO and HA precursors were coated on TAV by sol–gel dip-coating method. A single CTO layer (~ 500 nm thickness) was coated and heat treated at 750°C prior to five times of HA coating. The HA coating showed a thickness of 8–10 μm, after the heat treatment at 600 °C. Phase formation, surface morphology, and interfacial microstructure were investigated by x-ray diffraction (XRD) and scanning electron microscopy (SEM). SEM observations revealed no cracks on the HA/CTO surface. However surface cracks were observed when HA was directly coated on TAV. The bonding strength of HA/CTO increased almost three times compare to direct HA coatings. The higher bonding strength on CTO coated sample could be attributed to the formation of micro-cracks, the high surface roughness and high interfacial bonding between HA and CTO layer. |
| 저자 |
이병천1, A. Balakrishnan1, 김택남1, 박중근2
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| 소속 |
1배재대, 2한국과학기술원 재료공학과 |
| 키워드 |
Sol-gel; Surface cracks; Hydroxyapatite; Bonding strength
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| E-Mail |
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