| 摘要 |
PURPOSE:To form a coating layer excellent in adhesive strength and having high cleanliness by irradiating the surface of a base material to be treated with electron beam in vacuum to form this surface into molten or semimolten state and then thermally spraying a coating material on the above surface by means of electron beam. CONSTITUTION:At the time of forming a corrosion- and heat-resisting coating layer on the surface of a base material 2 of a structural member, first the surface of the base material 2 is irradiated with an electron beam 1 in vacuum while scanning this electron beam 1 across this surface, by which a surface layer 3 in an arbitrary width is formed into molten or semimolten state. Subsequently, a coating material 5 is put into the electron beam 1 and melted, and the resulting droplets 6 are thermally sprayed in a sprayed state on the above base-material surface 3 in molten or semimolten state, by which a coating layer 4 having superior adhesive strength, excellent in corrosion resistance, heat-insulating property, etc., and improved in cleanliness can be formed. |
