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Effects of thermal treatment on hydrophilicity and corrosion resistance of Ti surface
Author(s) -
Boonrungsiman Suwimon,
Prompinit Panida,
Khemthong Pongtanawat,
Wutikhun Tuksadon,
Treethong Alongkot,
Kasamechonchung Panita,
Chanlek Narong,
Maniratanachote Rawiwan,
Horprathum Mati,
Pankiew Apirak,
Pornthreeraphat Suppanit,
Khemasiri Narathon,
Klamchuen Annop
Publication year - 2019
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6580
Subject(s) - materials science , corrosion , oxide , surface roughness , rutile , anatase , thermal oxidation , chemical engineering , surface finish , layer (electronics) , indentation hardness , contact angle , surface modification , biocompatibility , titanium , metal , titanium oxide , metallurgy , surface layer , composite material , microstructure , chemistry , photocatalysis , organic chemistry , engineering , catalysis
Surface treatment of titanium (Ti) surface has been extensively studied to improve its properties for biomedical applications, including hydrophilicity, corrosion resistance, and tissue integration. In this present work, we present the effects of thermal oxidation as surface modification method on metallic titanium (Ti). The Ti foils were oxidized at 300°C, 400°C, 500°C, and 600°C under air atmosphere for 3 hours, which formed oxide layer on Ti surface. The physicochemical properties including surface chemistry, roughness, and thickness of the oxide layer were evaluated in order to investigate how these factors affected surface hydrophilicity, microhardness, and corrosion resistance properties of the Ti surface. The results revealed that surfaces of all oxidized samples were modified by formation of titanium dioxide layer, of which morphology, phase, and thickness were changed according to the oxidized temperatures. Increasing oxidation temperature led to the formation of thicker oxide layer and phase transformation of anatase to rutile. The presence of the oxide layer helped the improvement of corrosion resistance and microhardness. The most improvement in surface roughness was found in the specimens treated at 400°C, which significantly improved surface hydrophilicity. But both surface roughness and hydrophilicity reduced when oxidized at 500°C and 600°C, suggesting that hydrophilicity was dominated by the surface roughness. In addition, this surface treatment did not reduce the biocompatibility of the metallic Ti substrates against murine osteoblasts (MC3T3).