期刊
SURFACE & COATINGS TECHNOLOGY
卷 334, 期 -, 页码 286-291出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2017.11.046
关键词
Superhydrophobic coating; Fe-based amorphous alloy; Plasma spraying; Microhardness; Wear resistance
资金
- Fundamental Research Funds for the Central Universities [2014QNA13]
- China Postdoctoral Science Foundation [2014M561725]
- National Natural Science Foundation of China (NSFC) [51741509, 51475457]
Poor durability prominently limits the application of superhydrophobic coatings. In this study, a super-hard superhydrophobic Fe-based amorphous alloy coating was prepared on Q235 steel substrate via plasma spraying and further surface modification with heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane (FAS17). The SEM observation showed that the coating surface feature varied with plasma spray power. The coating with a spray power of 30 kW has a triple-level hierarchical surface feature with no-flattening particles in dozens of micron size, adherent splashing particles in several micron size, and wool-like oxides with nano size. The corresponding water contact angle and sliding angle were 154 degrees +/- 2 degrees and 4 degrees +/- 1 degrees, respectively. The X-ray diffraction results revealed that the coatings have amorphous structure; however, the crystallization and oxidation may occur with increasing spray power. The energy dispersive spectroscopy result confirmed that the nano wool-like oxides comprise multi metal oxides, in which Fe, C, and Mo dominated. The adherent splashing particles were rarely found at 15 kW, whereas the wool-like oxides were not at all observed at 15 and 22.5 kW. Thus, the hydrophobicity decreased when the spray power increased. The X-ray phosphorescence spectroscopy test verified the chemical bonding of FAS17 and coatings. In addition, in virtue of super-high microhardness of 884 +/- 61HV(0.1), the superhydrophobic coating at 30 kW spray power displayed excellent anti-wear property under a pressure as high as 10 kPa.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据