Study on the Mechanisms of Under-film Corrosion in the Upper Part of Water Ballast Tanks
| Project/Area Number |
25289318
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Naval and maritime engineering
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
OSAWA NAOKI 大阪大学, 工学(系)研究科(研究院), 教授 (90252585)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TAKADA Atsushi 海上技術安全研究所, 研究員 (90470054)
KOJIMA Ryuji 海上技術安全研究所, 研究員 (70392694)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
|
|---|
| Keywords | 塗膜下腐食 / バラストタンク / エポキシ塗料 / 鉄2価イオン / 蛍光プローブ / セルオートマトン / スクライブ試験板 / エッジ腐食 / 非破壊モニタリング / Fe2+イオン / 蛍光 / アミン / Fe3+イオン |
|---|
| Outline of Final Research Achievements |
Effectiveness of fluorescent ferric ion indicator “RhoNox-1” for under film corrosion detection of coated steel panels in water ballast tank is examined. Under film corrosion sensing semi-transparent modified epoxy films which contains RhoNox-1 are prepared. It is found that RhoNox-1 is not responsive to amine-based hardener, and steel's anode reactions in under-film corrosion had been detected clearly by using the developed Fe2+ sensing paint.
An under-film corrosion simulation method for epoxy coated steel panels in water ballast tanks (WBT) based on 2-dimensional cellular automaton has been developed. The change in corroded surface shape of epoxy coated and scribed steel panels made of conventional steel and corrosion resistant steel (CRS) exposed in WBT is simulated, and the effectiveness of the developed simulation method is demonstrated by comparing simulated and measured corroded surface profiles.
|
Report
(4 results)
Research Products
(14 results)
-
[Journal Article] Development of Under-film Corrosion Simulation Mehod based on Cellular Automation2016
Author(s)
Osawa, N., Kanou, Y., Kawamura, Y., Takada, A., Shiotani, K., Takeno, S., Katayama, S., Kristov, I.W.
-
Journal Title
Proc. The 35th Int. Conf. on Ocean, Offshore and Arctic Enginnering (OMAE2016)
Volume: 1
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
