Preparation of Hydrophobic and Oleophilic Surface of 316 L Stainless Steel by Femtosecond Laser Irradiation in Water

Chunyong Liang School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. ChinaCorrespondence[email protected]

Baofa Li School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Hongshui Wang School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Baoe Li School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Jianjun Yang Institute of Modern Optics, Nankai University, Tianjin, P.R. China

Linxi Zhou School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Haipeng Li School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Xuexia Wang School of Materials Science and Engineering, Hebei University of Technology, Tianjin, P.R. China

Changyi Li China Stomatological Hospital, Tianjin Medical University, Tianjin, P.R. China

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Abstract

An excellent hydrophobic and super-oleophilic surface on 316 L stainless steel was obtained by femtosecond laser irradiation in deionized water. Using lower laser fluence and scanning speed of femtosecond laser irradiation, a single stripe structure was fabricated and the corresponding contact angle to water and ethylene glycol was 127.2° and 19.6°, respectively. When laser fluence and scanning speeds increased, stripes, grooves, and holes structures were obtained on the surface and the corresponding water contact angles increased and ethylene glycol contact angles decreased, with a maximum water contact angle of 142.5° and minimum ethylene glycol contact angle of 6.4°.

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Preparation of Hydrophobic and Oleophilic Surface of 316 L Stainless Steel by Femtosecond Laser Irradiation in Water

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Preparation of Hydrophobic and Oleophilic Surface of 316 L Stainless Steel by Femtosecond Laser Irradiation in Water

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