Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


한국표면공학회지 (43권1호 25-30)

Corrosion Behavior of Nanotube Formed on the Bone Plate of Ti-6Al-4V Alloy for Dental Use

치과용 Ti-6Al-4V 합금 골 고정판 표면에 형성된 나노튜브의 부식거동

Kim, Won-Gi;Lee, Chung-Hwan;Chung, Chae-Heon;Choe, Han-Cheol;

조선대학교 치의학전문대학원 치과재료학교실 및 생체재료나노계면활성화센터;조선대학교 치의학전문대학원 보철학교실;
Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University;Department of Prosthodontics, School of Dentistry, Chosun University;

DOI : 10.5695/JKISE.2010.43.1.025


Titanium and titanium alloys are widely used for orthopedic and dental implants for their superior mechanical properties, low modulus, excellent corrosion resistance and good biocompatibility. In this study, corrosion behaviors of nanotube formed on the bone plate of Ti-6Al-4V alloy for dental use have been investigated. $TiO_2$ nanotubes were formed on the dental bone plates by anodization in $H_3PO_4$ containing 0.6 wt % NaF solution at $25^{circ}C$. Electrochemical experiments were performed using a conventional three-electrode configuration with a platinum counter electrode and a saturated calomel reference electrode. Anodization was carried out using a scanning potentiostat (EG&G Co, Model 263A USA), and all experiments were conducted at room temperature. The surface morphology was observed using field emission scanning electron microscopy (FE-SEM) and energy dispersive x-ray spectroscopy(EDS). The corrosion behavior of the dental bone plates was examined using potentiodynamic test(potential range of -1500~2000 mV) in a 0.9% NaCl solution by potentiostat (EG&G Co, PARSTAT 2273. USA). The inner diameter of nanotube was about 150~180 nm with wall thickness of about 20 nm. The interspace of nanotube to nanotube was 50 nm. The passive region of the nanotube formed bone plates showed the broad range compared to non-nanotube formed bone plates. The corrosion surface of sample was covered with corrosion products.


Dental bone plate;Nanotube structure;Corrosion behavior;Anodization;