Laser cladding process has been widely used to produce high quality coating layers. In the laser cladding process, infrared (IR) laser is usually used. Although IR laser cladding has a number of advantages, it is difficult to produce coating layers of materials which has a high reflectivity at wavelength of IR such as copper, silver etc. Such materials have a higher light absorptivity at lower light wavelength. Recently, our group has developed a laser cladding system with blue direct diode lasers (DDL) in continuous wave. In this study, copper layer formation with the blue DDL cladding system will be reported.
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