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Jaehong Lee(이재홍),Seung-Hoon Um(엄승훈),Min-Young Na(나민영),Hye-Jung Chang(장혜정),Hyung-Seop Han(한형섭),Yu-Chan Kim(김유찬),Hojeong Jeon(전호정) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Ti alloy, which be commonly used in medical implants for hard tissue, has high corrosion resistance from body fluid. Nevertheless, Ti alloy has been considered as a bio-inert material which might form fibrous tissue and have low osseointegration because of Ti oxide film formed naturally in oxygen environment. To improve the osseointegration, surface roughness and structure modification of bio-inert Ti alloy has been attempted. And currently, the surface modification by laser has been developed for laser induced periodic surface structure (LIPSS) to provide nano/micro scale cell favor morphology to bone cells. However, the bio-inert property inherently cannot be changed to bio-active. In this study, using LIPSS, we coated hydroxyapatite on surface of Ti6Al4V to provide nano/micro scale bio-active morphology to bone cells. The hydroxyapatite coatings on LIPSS were observed and analyzed by SEM, EDX, XRD and TEM. Additionally, the improved cell attachment was showed on LIPSS coated with hydroxyapatite.