Development of prevention technology of hydrogen absorption for steels by improving electrochemical property of non-metallic inclusions
| Project/Area Number |
22360300
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
MUTO Izumi 東北大学, 大学院・工学研究科, 准教授 (20400278)
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| Co-Investigator(Kenkyū-buntansha) |
HARA Nobuyoshi 東北大学, 大学院・工学研究科, 教授 (40111257)
AKAO Noboru 東北大学, 大学院・工学研究科, 助手 (80222503)
菅原 優 東北大学, 工学(系)研究科(研究院), 助教 (40599057)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
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| Keywords | 腐食防食 / 水素侵入 / 硫化物系介在物 / 水素透過 / マイクロ電気化学セル / 高強度鋼 / 炭素鋼 |
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| Research Abstract |
A micro permeation cell for studying hydrogen absorption behavior in a small area on metals was developed. The preferential sites of hydrogen absorption of carbon steel surfaces were found to be MnS inclusions in near-neutral environments. It was demonstrated that the hydrogen permeation currents were extremely increased by the dissolution of MnS inclusions. HS- ions released from the sulfide dissolution promote the hydrogen absorption reaction on steel surfaces. Ti(C,N) inclusions do not dissolve and do not promote the hydrogen absorption in near-neutral environments.
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Report
(4 results)
Research Products
(16 results)
