Evaluation of surface and bonding properties of cold rolled steel sheet pretreated by Ar/O2 atmospheric pressure plasma at room temperature

In this study, cold rolled steel sheet for automotive was pretreated by the Ar/O2 atmospheric pressure plasma at room temperature to improve the adhesive bonding properties. Through the analysis of contact angle and calculation of work of adhesion, the change of surface properties related to the plasma power, treatment time, and flow rate of O2 gas were investigated before and after plasma treatment. Contact angle was degreased and work of...