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Fundamental Study of Corrosion Control in Marine and Offshore Structures Using Radiation Induced Surface Activation (RISA)
- Source :
- Journal of The Japan Institute of Marine Engineering. 42:675-681
- Publication Year :
- 2007
- Publisher :
- The Japan Institute of Marine Engineering, 2007.
-
Abstract
- A corrosion mitigation technique based on radiation induced surface activation (RISA) from the gamma ray irradiation on a metal surface is reported in this paper. This study aimed to develop a RISA method to prevent crevice corrosion in SUS304 stainless steel using low-intensity radioactive material. Experiment showed that an electrode potential of -100 mV vs. Ag/AgCl was produced and maintained on TiO2-coated SUS304 stainless steel specimens immersed in artificial seawater and in close contact with a small, sealed60Co source or activated by spontaneous neutron irradiation, with no corrosion observed for more than 7 days. On the contrary, the potential of the specimen without a radiation source decreased less than-280 mV vs. Ag/AgCl and crevice corrosion occurred beneath the O-ring within few days. The RISA effect of low-intensity radioactive material has the potential to prevent crevice corrosion of SUS304 stainless steel in actual seawater.
Details
- ISSN :
- 18843778 and 13461427
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Journal of The Japan Institute of Marine Engineering
- Accession number :
- edsair.doi...........2b66137f97acd81ce2bcc47a84d034ae