Effect of surface adsorption on icing behaviour of metallic coating

被引:15
|
作者
Wang, Jie [1 ]
Memon, Halar [1 ]
Liu, Junpeng [1 ]
Yang, Guang [2 ]
Xu, Fang [1 ]
Hussain, Tanvir [1 ]
Scotchford, Cohn [1 ]
Hou, Xianghui [1 ]
机构
[1] Univ Nottingham, Fac Engn, Univ Pk, Nottingham NG7 2RD, England
[2] Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China
来源
SURFACE & COATINGS TECHNOLOGY | 2019年 / 380卷
基金
英国工程与自然科学研究理事会; 欧盟地平线“2020”;
关键词
Surface adsorption; Icephobicity; Ni-Cu-P ternary coating; Interfacial contact; Interlocked ice; SUPERHYDROPHOBIC ALUMINUM SURFACE; NI-CU-P; WETTING BEHAVIOR; ICE; WATER; ELECTRODEPOSITION; NANOPARTICLES; FABRICATION; TRANSITION;
D O I
10.1016/j.surfcoat.2019.125068
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Icephobicity of materials has received intensive attention in recent years due to the increasing requirement of ice protection in aerospace, wind energy and power lines. However, the influencing factors of material icephobicity have not been well identified. In this work, the effect of surface gaseous adsorption on icing behaviour of materials was investigated for the first time. Ni-Cu-P coatings with different surface morphologies were fabricated and used as the objects of the study. Environmental scanning electron microscopy (ESEM) was utilized to observe the water condensation and ice formation on the coatings. X-ray photoelectron spectroscopy (XPS) was employed to analyse the variations of surface adsorption. Droplets icing time and ice adhesion strength of the coatings were also studied. The results showed that the icing time of water droplets on the Ni-Cu-P coatings increased significantly, and the ice adhesion strength decreased sharply with the spontaneous surface adsorption of gaseous species (mainly hydrocarbon groups) in air. The adsorbed hydrocarbon species would promote the formation of air pockets between the ice-coating interface, which could effectively reduce the interfacial contact of the formed ice with the coating. When the adsorbed hydrocarbon species were removed by plasma cleaning, water droplets tended to have more direct contacts with the coatings prior to icing, leading to the formation of interlocked ice and significantly increased the ice adhesion on the surface. The variation of surface icephobicity can also be attributed to the changes of surface energy due to the surface adsorption. The results indicated that the surface gaseous adsorption in air played an important role in determining the surface icing behaviour and the icephobicity of the materials.
引用
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页数:11
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