EXPERIMENTAL PRODUCTION OF INDUSTRIAL ROLLER COATED BY HARD α-Al2O3 FILM USING AEROSOL DEPOSITION PROCESS

摘要

Many mechanical pans, such as industrial rollers, shafts etc. is always required harder and smoother surface to achieve high efficiency production. These parts are usually coated by hard film such as hard Cr plating film. However, harder coating is required man hard Cr plating film for the industrial machine now. Therefore, the harder and the smoower film than Cr plating film is required strongly because such a hard film can improve mechanical operation efficiency by reducing maintenance time. On the other hands, α-Al2O3 film is one of the hardest material. And aerosol deposition (AD) method can coat α-Al2O3 film easily in room temperature. In this paper merefore, α-Al2O3 film formation on industrial roll was developed using AD method. And various spec of α-Al2O3 film was investigated comparing with conventional hard Cr plating film.