Enhancement of water durability and bio-activity on electrically modified yttria-stabilized zirconia surfaces
Project/Area Number |
21760528
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Single-year Grants |
Research Field |
Inorganic materials/Physical properties
|
Research Institution | Kyushu University |
Principal Investigator |
TANAKA Yumi Kyushu University, 大学院・工学研究院, 准教授 (00436619)
|
Project Period (FY) |
2009 – 2010
|
Project Status |
Completed (Fiscal Year 2010)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
Keywords | イットリア安定化正方晶ジルコニア / バイオセラミックス / 酸化物イオン伝導 / 分極 / 低温劣化 / アルカリ処理 / 骨類似アパタイト / エレクトレット |
Research Abstract |
Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is an important load-bearing bioceramic. However, a phenomenon called LTD, in which a phase destabilization occurs under moisture, reduces the reliability of Y-TZP as long-term implants. Since the exact mechanism of LTD is still unclear, this work was directed to evaluate an influence of surface charges of Y-TZP on LTD. Y-TZP were polarized under DC electrical field to vary surface O^<2-> concentrations, which resulted in a successful preparation of Y-TZP surfaces with stable static charges. LTD durability was significantly influenced by the polarity on the surfaces ; the negatively-charged surface was proved to show a good LTD durability.
|
Report
(3 results)
Research Products
(69 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] In Vitro Method to Characterize Resorption of Calcium Phosphate-Based Ceramic Scaffolds2009
Author(s)
A.Ito, Y.Sogo, A.Yamazaki, M.Aizawa, A.Osaka, S.Hayakawa, M.Kikuchi, I.Akahane, K.Yamashita, Y.Tanaka, M.Tadokoro, H.Ohgushi
Organizer
The 26^th International Japan-Korea Seminar on Ceramics
Place of Presentation
Ibaraki (Japan)
Year and Date
2009-11-25
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] In Vitro Method to Characterize Resorption of Calcium Phosphate-Based Ceramic Scaffolds2009
Author(s)
Atsuo Ito, Yu Sogo, Atsushi Yamazaki, Mamoru Aizawa, Akiyoshi Osaka, Satoshi Hayakawa, Masanori Kikuchi, Ikuko Akahane, Kimihiro Yamashita, Yumi Tanaka, Mika Tadokoro, Hajime Ohgushi
Organizer
The 26th International Japan-Korea Seminar on Ceramics
Place of Presentation
つくば
Related Report
-