Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

Fast and controllable decontamination of 7075 aluminum alloy radioactive contaminated by anodic oxidation (electropolishing) method

Document Type : Research Paper

Authors

H.R. Moazami
M. Gharaghani
T. Yousefi
M.R. Pourjavid

Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 11365-8486, Tehran - Iran

https://doi.org/10.24200/nst.2024.1639
Abstract
The anodic pulse oxidation method has been utilized for the decontamination of 7075 aluminum. This method involves the application of high-intensity electric current for a short period, effectively removing oxides and other impurities from the alloy's surface. The results indicate that by adjusting parameters such as frequency, voltage, and time, precise control over decontamination can be achieved, leading to enhanced mechanical properties and surface quality of aluminum 7075. Consequently, the anodic pulse oxidation method proves to be a rapid and efficient technique for decontamination and property enhancement of aluminum alloys. This method can serve as a dependable and effective solution across various industries, particularly in nuclear industries.

Highlights

  1. Remark J.F, Miller A.D. Review of Plant Decontamination Methods. In Decontamination and Decommissioning of Nuclear Facilities. M.M. Osterhout, Ed., ed Boston, MA: Springer US. 1980;33-45.

 

  1. Suh Y.A, Hornibrook C, Yim M.-S. Decisions on nuclear decommissioning strategies: Historical review. Progress in Nuclear Energy. 2018;106: 34-43.

 

  1. Noynaert L. Decontamination processes and technologies in nuclear decommissioning projects. In Nuclear Decommissioning. M. Laraia, Ed., ed: Woodhead Publishing. 2012;319-345.

 

  1. Yang H.-M, Park C.W, Lee K.-W. Polymeric coatings for surface decontamination and ecofriendly volume reduction of radioactive waste after use. Progress in Nuclear Energy. 2018;67-74.

 

  1. Bespala E.V, Antonenko M.V, Chubreev D.O, Leonov A.V, Novoselov I.Y, Pavlenko A.P, Kotov V.N. Electrochemical treatment of irradiated nuclear graphite. Journal of Nuclear Materials. 2019;526:151759.

 

  1. Pozo A.A.P, Bustos E.B, Monroy-Guzmán F. Decontamination of radioactive metal surfaces by electrocoagulation. Journal of Hazardous Materials. 2019;361:357-366.

 

  1. Katona R, Rivonkar A, Locskai R, Bátor G, Abdelouas A, Somlai J, Kovács T. Tafel-analysis of the AP-CITROX decontamination technology of Inconel alloy 690. Applied Radiation and Isotopes. 2022;181:110073.

 

  1. Chaghazardi Z, Wüthrich R. Review—Electropolishing of Additive Manufactured Metal Parts. Journal of The Electrochemical Society. 2022;169:043510.

 

  1. Pendyala P, Bobji M.S, Madras G. Evolution of Surface Roughness During Electropolishing. Tribology Letters. 2014;55:93-101.

 

  1. Zironi E.P, Saniger J.M, Rickards J, Elizalde J, Andrade E. A study of the fluorine corrosion of the Al- 7075 alloy using nuclear techniques. Journal of Nuclear Materials. 1994;210:123-129.

 

  1. Tiringer U, Kovač J, Milošev I, Effects of mechanical and chemical pre-treatments on the morphology and composition of surfaces of aluminium alloys 7075-T6 and 2024-T3. Corrosion Science. 2017;119:46-59.

Keywords

Decontamination
Aluminum alloys
Anodic oxidation method (electropolishing)
  1. Remark J.F, Miller A.D. Review of Plant Decontamination Methods. In Decontamination and Decommissioning of Nuclear Facilities. M.M. Osterhout, Ed., ed Boston, MA: Springer US. 1980;33-45.

 

  1. Suh Y.A, Hornibrook C, Yim M.-S. Decisions on nuclear decommissioning strategies: Historical review. Progress in Nuclear Energy. 2018;106: 34-43.

 

  1. Noynaert L. Decontamination processes and technologies in nuclear decommissioning projects. In Nuclear Decommissioning. M. Laraia, Ed., ed: Woodhead Publishing. 2012;319-345.

 

  1. Yang H.-M, Park C.W, Lee K.-W. Polymeric coatings for surface decontamination and ecofriendly volume reduction of radioactive waste after use. Progress in Nuclear Energy. 2018;67-74.

 

  1. Bespala E.V, Antonenko M.V, Chubreev D.O, Leonov A.V, Novoselov I.Y, Pavlenko A.P, Kotov V.N. Electrochemical treatment of irradiated nuclear graphite. Journal of Nuclear Materials. 2019;526:151759.

 

  1. Pozo A.A.P, Bustos E.B, Monroy-Guzmán F. Decontamination of radioactive metal surfaces by electrocoagulation. Journal of Hazardous Materials. 2019;361:357-366.

 

  1. Katona R, Rivonkar A, Locskai R, Bátor G, Abdelouas A, Somlai J, Kovács T. Tafel-analysis of the AP-CITROX decontamination technology of Inconel alloy 690. Applied Radiation and Isotopes. 2022;181:110073.

 

  1. Chaghazardi Z, Wüthrich R. Review—Electropolishing of Additive Manufactured Metal Parts. Journal of The Electrochemical Society. 2022;169:043510.

 

  1. Pendyala P, Bobji M.S, Madras G. Evolution of Surface Roughness During Electropolishing. Tribology Letters. 2014;55:93-101.

 

  1. Zironi E.P, Saniger J.M, Rickards J, Elizalde J, Andrade E. A study of the fluorine corrosion of the Al- 7075 alloy using nuclear techniques. Journal of Nuclear Materials. 1994;210:123-129.

 

  1. Tiringer U, Kovač J, Milošev I, Effects of mechanical and chemical pre-treatments on the morphology and composition of surfaces of aluminium alloys 7075-T6 and 2024-T3. Corrosion Science. 2017;119:46-59.

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