Study on nanoparticle coating method and evaluation of the effect on the prevention of powder adhesion

Omi, Koyo; Segawa, Tomoomi ; Kawaguchi, Koichi  ; Ishii, Katsunori ; Tokura, Ryoma*; Satone, Hiroshi*; Suzuki, Michitaka*

To reduce the retention of the nuclear fuel materials in the glove box and the external exposure dose, the technology of the powder adhesion prevention by the nanoparticle coating to the glove box components has been developed. In this study, it was measured and evaluated that the prevention of powder adhesion by using acrylic, polycarbonate and stainless steel test pieces of the glove box components, with the nanoparticle coating method and the concentration of nanoparticles as parameters. Painting, spraying and dipping were examined as the coating method, and the spraying method with the proper workability was selected. Furthermore, since the coverage ratio of the alumina powder on the untreated surface of each test piece is 20% or more, whereas the coverage was reduced to 5% or less on the coating surface, it was found that the high powder adhesion preventing effect can be obtained by the nanoparticle coating.