Effects of titanium surface treatment on adhesive properties of hydroxyapatite ceramics coating to titanium substrates by double layered capsule hydrothermal hot-pressing
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概要
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This report described the effects of Ti surface modification with NaOH hydrothermal solution on adhesion strength of HA coating produced by newly developed hydrothermal (DC-HHP) method. 2 kinds of surface layer (containing anatase-type TiO2 or not) were formed on Ti surface by immersing to 5 mol/L NaOH solution before HA coating process. Pull out tests were conducted to obtain an estimate for the adhesion properties of the HA coating. Shear strength of specimens with 5 mol/L NaOH treated at 423 K for 2 hours was estimated in the range of 4.1–5.7 MPa. The enhancement of the HA adhesive properties as well as more than three times values was achieved, in comparison to the specimens without the surface layer (approximate 1.5 MPa). It was demonstrated that 423 K hydrothermal treatment with 5 mol/l NaOH solution on Ti surfaces is significantly effective to enhancing adhesion strength of the HA coating produced by the DC-HHP method.
- 公益社団法人 日本セラミックス協会の論文
著者
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ONOKI Takamasa
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
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NAKAHIRA Atsushi
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
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HASHIDA Toshiyuki
Fracture Research Institute, Tohoku University
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Onoki Takamasa
Department Of Materials Science Graduate School Of Engineering Osaka Prefecture University
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Nakahira Atsushi
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Hashida Toshiyuki
Fracture And Reliability Res. Inst. Graduate School Of Engineering Tohoku Univ.
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KUNO Tomoaki
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
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HASHIDA Toshiyuki
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
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