2017 Volume 61 Issue 5 Pages 269-274
A mist system for laser-induced wet treatment without a solution bath was developed. Disk-shaped SUS316L specimens were sprayed with aluminum nitrate while irradiated with a laser, generating a treated layer containing aluminum and oxygen. This layer was equivalent to the treated layer generated by conventional laser-induced wet treatment, in which the specimens are soaked in a solution and irradiated with a laser. A treated layer including cavities was generated on the specimens irradiated with a laser focused on the specimen surface. A homogeneous treated layer was generated with the laser at a defocus distance of 0.25 mm. Friction test results indicated that the generated fiction track of the specimen treated using the mist system was thinner than that of untreated specimens. This suggested that wear resistance of SUS316L steel would be improved by laser-induced wet treatment with the mist system.
