Repairing surface defects of Zr-based metallic glass ribbons by nanosecond pulsed laser irradiation

Abstract

The metallic glass ribbons (MGRs) industrially produced by the single roller melt-spun method have many surface defects such as pits and scratches. In this study, it was attempted to repair the surface defects of Zr-based MGRs via nanosecond pulsed laser irradiation. The experimental results showed that the roughness of laser-repaired surfaces was significantly reduced compared to the melt-spun surface, and the surface topographies and morphologies were sensitive to the laser parameters. With optimal laser parameters, the smooth and defect-free surface could be achieved. This work offers a convenient and high-efficiency approach for repairing the surface defects of MGRs.