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17 March 2023 Cu-Zn alloy coating with multi-beam laser metal deposition using blue diode lasers
R. Higashino, Y. Sato, K. Takenaka, N. Abe, M. Tsukamoto
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Proceedings Volume 12412, Laser 3D Manufacturing X; 124120B (2023) https://doi.org/10.1117/12.2648571
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Copper has been widely applied for various industrial components such as heat exchangers, heat pipes, electro circuits and motors for automobiles because of having excellent properties in thermal conductivity and electrical conductivity. But it is difficult to process pure copper with IR lasers since light absorption of copper has 10% or less. It is known that he light absorption for copper increases as the wavelength becomes shorter. Thus, it was focused on 450 nm wavelength blue diode laser. In our previous study, multi beam type LMD method has been developed using a high intensity blue diode laser for copper layer formation and formed pure copper layer. However, pure copper was oxidized in the air and its surface turns black. Therefore, we tried to coat copper alloy with Zinc added (80% Cu-20% Zn) to improve discoloration resistance. And we tried to investigate of copper alloy layer mechanism using high speed camera. As the result, Cu-Zn alloy layer was formed on the stainless-steel plate with no pores at the output power density of 0.57 x105 W/cm2 and scanning speed of 6mm/s.
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R. Higashino, Y. Sato, K. Takenaka, N. Abe, and M. Tsukamoto "Cu-Zn alloy coating with multi-beam laser metal deposition using blue diode lasers", Proc. SPIE 12412, Laser 3D Manufacturing X, 124120B (17 March 2023); https://doi.org/10.1117/12.2648571
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KEYWORDS
Copper
Alloys
Coating
Metals
Blue lasers
Light absorption
Stainless steel
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