Construction and parameter optimization of LPBF-NiTi alloy bionic superhydrophobic surface based on laser processing

• DOI: 10.1016/j.jmrt.2023.05.162
• Publication Date: 2023-05-22T16:37:27Z
• Authors: Yingchun Qi; Pengwei Sha; Kun Yang; Bochao Jia; Zezhou Xu; Yanan Yang; Yunting Guo; Lunxiang Li; Qing Cao; Tingting Zou; Jianjun Yang; Zhenglei Yu; Zhengzhi Mu
• Keywords: Nickel titanium; Lotus effect

Nickel-titanium (NiTi) is the most ordinarily used shape memory alloy (SMAs), which has important implications in aerospace, medical devices and so on. However, NiTi parts were limited their application scope ability due to difficulty of processing. Until appearance laser powder bed fusion (LPBF) technology, it overcame preparation's multiple challenges became preferred method fabricate alloy. Nevertheless, fabricated by LPBF that have a great shortage still exist corrosion resistance. Therefore, this paper, series micro-nano structures with different characteristics constructed LPBF-NiTi orthogonal experiment for first time, wants explore degree influence various parameters on wettability samples. After variance analysis, nanolaser processing are suitable constructing lotus leaf surfaces obtained. The surface morphology composition studied SEM, XRD, EDS, XPS, respectively. Finally, resistance samples was tested electrochemical analysis. results show power during greatest And affected –CF/-CF2 adsorption. Furthermore, we compared superhydrophobic obtained based analysis substrate 3.5 wt% NaCl solution. result shows stability brilliantly increased substrate.