纳秒激光制备Fe基非晶合金涂层表面织构的疏水性研究  

Study on Hydrophobicity of Surface Texture on Fe-based Amorphous Alloy Coating Treated by Nanosecond Laser

作　　者：许骏杰 康嘉杰[1,3,4] 岳文 周永宽[1] 朱丽娜 付志强 佘丁顺[1,3] XU Junjie;KANG Jiajie;YUE Wen;ZHOU Yongkuan;ZHU Lina;FU Zhiqiang;SHE Dingshun(School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Science and Technology on Advanced High Temperature Structural Materials Laboratory,Beijing Institute of Aeronautical Materials,Beijing 100095,China;Zhengzhou Institute,China University of Geosciences(Beijing),Zhengzhou 451283,China;Institute of Flexible Electronics Technology of Tsinghua,Jiaxing 314000,Zhejiang,China)

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083 [2]中国航发北京航空材料研究院先进高温结构材料重点实验室,北京100095 [3]中国地质大学(北京)郑州研究院,郑州451283 [4]浙江清华柔性电子技术研究院,浙江嘉兴314000

出　　处：《材料导报》2022年第7期97-102,共6页Materials Reports

基　　金：国家自然科学基金(52175196,41872183);装备发展部重点项目(61409230614)。

摘　　要：利用冷喷涂技术在35CrMo钢基体上制备了Fe-Cr-Mo-C-B-Y体系非晶涂层,通过纳秒脉冲激光构造了规则排布的乳突、点阵和凹槽结构。结果表明:涂层的表面特征随激光织构的结构及间距的变化而变化。高通量脉冲激光作用下,涂层表面沿激光路径产生更大的凸起物,同时在凸起物上覆盖着由熔融粒子飞溅形成的颗粒物。织构表面同时存在织构、颗粒物、抛光表面三种结构。经过激光加工处理后的涂层表面具有优异的疏水性,与去离子水和钻井液的接触角分别提升至(151.6±0.3)°和(145.9±0.4)°。随着点阵及凹槽织构间距的增加,涂层表面的润湿性从超疏水转向疏水,在间距最大时转变为亲水;乳突织构的间距变化对疏水性影响较小,即使间距增大到300μm时涂层表面依旧能保持疏水性;同时涂层表面表现出疏水稳定性及低粘附性。Fe-Cr-Mo-C-B-Y amorphous coatings were prepared on 35 CrMo steel by cold spraying(CS)technique.The mastoid-like,dot and groove surface texture structures with regular arrangement were constructed by nanosecond laser.The result show that the surface characteristics of the coating vary with the laser texture structure and spacing.Under the action of high flux pulsed laser,the coating surface produces larger protrusions along the laser path,and the protrusions are covered with particles formed by the splashing structure of molten particles.Texture surface has texture,particle and polished surface at the same time.Besides,the coating surface after laser processing has excellent hydrophobicity,and the contact angle with deionized water and drilling fluid increase to(151.6±0.3)°and(145.9±0.4)°respectively.With the increase of lattice and groove texture spacing,the wettability changes from superhydrophobic to hydrophobic,and becomes hydrophilic when the spacing is maximum.The spacing change of mastoid-like texture has little effect on hydrophobicity,and even if the spacing increases to 300μm,the coating surface can still keep hydrophobic.At the same time,the coating surface showed hydrophobic stability and low adhesion.

关 键 词：冷喷涂 Fe-Cr-Mo-C-B-Y非晶涂层 表面织构 疏水性 

分 类 号：TG142[一般工业技术—材料科学与工程]