Modification of Electrochemically Deposited Apatite Using Supercritical Water
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概要
- 論文の詳細を見る
Supercritical water was used as a modification method of electrochemically deposited apatite on pure titanium. The apatites were coated on a commercially pure titanium plate using a hydrothermal-electrochemical method. A constant direct current at 12.5 mA/cm^2 was loaded for 1 hr at 25, 60, 100, 150 and 200℃ in an electrolyte containing calcium and phosphate ions. The deposited apatite on the titanium substrate was stored in supercritical water at 450℃ under 45 MPa for 8 hr. With this treatment, the crystallinity of the apatites increased, sharp edges of the deposited apatites were rounded off, and the bonding strength of the titanium substrate to the deposited apatites significantly increased. On the other hand, weight loss in 0.01 N HCl decreased and the weight gain rate in a simulated body fluid also decreased with this treatment. It is suggested that the modification using supercritical water improved the mechanical strength of the deposited apatite, but worsened its bioactivity.
- 日本歯科理工学会の論文
著者
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Hasegawa Jiro
Department Of Dental Material Science School Of Dentistry Aichi-gakuin University
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Ban Seiji
Department Of Biomaterials Science Field Of Oral And Maxillofacial Rehabilitation Course For Advance
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Hasegawa Jiro
Department Of Dental Material Science School Of Dentistry Aichi Gakuin Univ.
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