Abstract
In laser cladding, at the wavelength range of blue, light absorptivity of copper is much higher than that at wavelength range of IR. Thus, we developed CW blue direct diode laser (DDL) system for formation of copper coating layers. This system consists of fiber coupled blue direct diode lasers with the maximum power of 100W at the wavelength of 445 nm, focusing lenses and powder feeding nozzle. In this study, we investigate the fundamental characteristics of the CW blue DDL system and formed copper coating layers on 304 stainless steel.In laser cladding, at the wavelength range of blue, light absorptivity of copper is much higher than that at wavelength range of IR. Thus, we developed CW blue direct diode laser (DDL) system for formation of copper coating layers. This system consists of fiber coupled blue direct diode lasers with the maximum power of 100W at the wavelength of 445 nm, focusing lenses and powder feeding nozzle. In this study, we investigate the fundamental characteristics of the CW blue DDL system and formed copper coating layers on 304 stainless steel.
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