Study on powder adhesion prevention by surface micro-fabrication of stainless steel

Hayashizaki, Kohei ; Omi, Koyo; Segawa, Tomoomi ; Kawaguchi, Koichi  ; Ishii, Katsunori ; 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 surface micro-fabrication on the glove box components has been developed. In this study, a stainless steel specimen, which is a glovebox component material, was subjected to surface microfabrication, and measurements and evaluations were carried out concerning adhesion and powder adhesion prevention effects. A stainless steel specimen that was unmachined and several specimens with different surface roughnesses that had been micro-fabricated on their surfaces were used to perform surface roughness and adhesion measurement tests by atomic force microscopy. The average adhesion force tended to decrease as the surface roughness increased. In this study, it was found that surface micro-fabrication of stainless steel had a certain effect on preventing powder adhesion.