Formation of porous surface on NiTi and suppression of Ni ion release
Project/Area Number |
24656430
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Single-year Grants |
Research Field |
Material processing/treatments
|
Research Institution | Tohoku University |
Principal Investigator |
UEDA Kyosuke 東北大学, 工学(系)研究科(研究院), 助教 (40507901)
|
Co-Investigator(Renkei-kenkyūsha) |
NARUSHIMA Takayuki 東北大学, 大学院工学研究科, 教授 (20198394)
KATO Hidemi 東北大学, 金属材料研究所, 准教授 (80323096)
|
Project Period (FY) |
2012-04-01 – 2014-03-31
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
Keywords | ニッケルチタン / ポーラス / アナターゼ / イオン溶出 / 表面改質 / 光触媒 / 水接触角 / 傾斜機能 / 擬似体液 / 溶融金属 |
Research Abstract |
A dealloying Ni surface having a porous structure was prepared from NiTi alloys through immersion in molten metals. The concentration of Ni from the NiTi substrate to the surface was decreased in a stepwise manner forming an inner Ti2Ni layer and outer alpha-Ti layer on the substrate. The amounts of metallic ions eluted from these specimens to 1mass% lactic acid solution were evaluated. Despite the increased surface area of the dealloyed specimen, Ni ion elution was suppressed to the same level as that in the non-treated NiTi substrate. The anatase layer formed by two-step thermal oxidation suppressed the Ni ion release from the dealloyed substrate.
|
Report
(3 results)
Research Products
(30 results)
-
[Journal Article] NKG2D+ IFN-γ+ CD8+ T cells are responsible for palladium allergy.2014
Author(s)
Kawano M, Nakayama M, Aoshima Y, Nakamura K, Ono M, Nishiya T, Nakamura S, Takeda Y, Dobashi A, Takahashi A, Endo M, Ito A, Ueda K, Sato N, Higuchi S, Kondo T, Hashimoto S, Watanabe M, Watanabe M, Takahashi T, Sasaki K, Nakamura M, Sasazuki T, Narushima T, Suzuki R, Ogasawara K.
-
Journal Title
PLoS One.
Volume: 9
Issue: 2
Pages: 1-12
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Dealloying of NiTi by immersion in metallic melt2013
Author(s)
K. Ueda, M. Hirohashi, T. Narushima, T. Wada and H. Kato
Organizer
The 8^<th> Pacific Rim International Conference on Advanced Materials and Processing (PRICM8)
Place of Presentation
Hilton Waikoloa Village, Waikoloa, Hawaii, USA
Year and Date
2013-08-09
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-