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http://dx.doi.org/10.14775/ksmpe.2019.18.11.035

Study on Wetting Characteristics of Laser Cladding Surfaces  

Jang, Mu-Yeon (Graduate School of Mechanical Engineering, Pukyong National University)
Park, Young-Whan (Department of Mechanical Engineering, Pukyong National University)
Kim, Tae-Wan (Department of Mechanical Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.11, 2019 , pp. 35-40 More about this Journal
Abstract
Laser processing has been used in various fields. In this study, the feasibility of a hydrophobic surface was investigated through the laser cladding technique. A diode laser was used, and the output was set to 600-800 W. Seven different specimens were prepared with different cladding widths and spacings, and the contact angles for water droplets were evaluated. As a result, the contact angle of water droplets measured in the direction parallel to the cladding line was higher than that in the vertical direction. The wider the cladding width and the cladding space, the higher the contact angle in the parallel direction. It is thought that when a higher contact angle is formed in the parallel direction, more air can be placed in the valley between the cladding lines. In addition, for the hydrophobic coating effect, the contact angle of the coated cladding surface was increased by about $5-15^{\circ}$ as a whole compared to the coated smooth surface. It was confirmed that the wetting characteristics were improved through the cladding.
Keywords
Laser Cladding; Contact Angle; Hydrophobic Surface;
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