Elucidation of a mechanism of corrosion on zirconium in chloride-containing environment
| Project/Area Number |
25709064
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
Tsutsumi Yusuke 東京医科歯科大学, 生体材料工学研究所, 准教授 (60447498)
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| Research Collaborator |
HARA Nobuyoshi
MUTO Izumi
SUGAWARA Yu
NAKANO Shigeyuki
TSUKADA Junichi
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥24,830,000 (Direct Cost: ¥19,100,000、Indirect Cost: ¥5,730,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2013: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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| Keywords | ジルコニウム / 腐食 / 生体材料 / 耐食性 / 孔食 |
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| Outline of Final Research Achievements |
The aim of this study was to elucidate a mechanism of localized corrosion on zirconium (Zr) in chloride-containing environment. The experiments were performed by using special electrochemical measurement system that enables to measure the corrosion behavior within the micrometer-scale area. As a result, it was found that the pitting corrosion was initiated on the inclusions derived from the impurity elements in Zr substrate. However, the concentration of the impurities were extremely small so that the inclusion size were tiny and they were rarely exposed to the surface. In other words, Zr has potentially excellent corrosion resistance even in chloride-containing environments. The surface modification technique which can improve the localized corrosion resistance of Zr was developed based on the above findings. It must be a great achievement to enhance the usage of Zr not only in medical field but also general industrial one.
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Report
(5 results)
Research Products
(25 results)
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[Journal Article] Evaluation of Release and Accumulation of Metal Ions from Titanium and Nickel by Accelerated Dissolution Test in Simulated Body Environments2015
Author(s)
Okamoto H, Tsutsumi Y, Watanabe M, Yamakage K, Ashida M, Chen P, Doi H, Miura H, Matsumura M, Hanawa T
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Journal Title
Electrochemistry
Volume: 83
Issue: 12
Pages: 1048-1052
DOI
NAID
ISSN
1344-3542, 2186-2451
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] ジルコニウムの孔食発生に及ぼす不純物元素の影響2016
Author(s)
塚田惇一, 堤 祐介, 蘆田茉希, 陳 鵬, 土居 壽, 菅原 優, 武藤 泉, 原 信義, 塙 隆夫
Organizer
日本金属学会2016 年秋期(第159 回) 講演大会
Place of Presentation
大阪大学豊中キャンパス（大阪府豊中市）
Year and Date
2016-09-21
Related Report
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