| Project/Area Number |
23560868
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Hiroshima University |
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Principal Investigator |
ISOMOTO YOSHINORI 広島大学, 工学(系)研究科(研究院), 准教授 (40127626)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIMADA Manabu 広島大学, 大学院工学研究院, 教授 (70178953)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Keywords | エロージョンコロージョン / 腐食防食 / FAC / ボイラー水 / 炭素鋼 / マッピング / エロージョン・コロージョン / ボイラー水環境 / 発生条件 / 皮膜成長 / 可視化 |
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| Research Abstract |
Effects of flow and environmental conditions on corrosion loss, and visualization of growth behaviors of oxide film growth formed on specimen surfaces were investigated in order to clarify mechanisms of erosion-corrosion or FAC (Flow Accelerated Corrosion) of carbon steel in boiler water environments. As results, it is found that the generation or formation field of erosion-corrosion/ FAC is strongly affected by flow and environmental conditions in the corrosive environments for carbon steel. It is also found that the oxide films gradually grow with testing time in visualization tests and that the flow conditions exist, in which the oxide films are covered on the whole steel surfaces, or parts of steel surfaces are clearly exposed on the surfaces from initial testing time. The generation of erosion-corrosion/FAC was supposed to be depending on the properties of oxide film such as porosity, compaction and crystallization.
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