Improvement of water-repellency homogeneity by compound fluorine–carbon sprayed coating and silane treatment

To improve the water-repellency of materials, a composite coating of fluorine–carbon has been developed in this study. A thermal sprayed coating produced by using a compound fluorine–carbon-cored wire exhibits excellent water-repellency. However, the contact angles of water of the coating surface sh...

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Bibliographic Details
Published in:Vacuum 2004-04, Vol.73 (3), p.519-525
Main Authors: Futamata, Masami, Gai, Xiaohui, Itoh, Hidenobu
Format: Article
Language:English
Subjects:
Fluorine–carbon
Silane treatment
Thermal sprayed coating
Water-repellency homogeneity
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Summary:To improve the water-repellency of materials, a composite coating of fluorine–carbon has been developed in this study. A thermal sprayed coating produced by using a compound fluorine–carbon-cored wire exhibits excellent water-repellency. However, the contact angles of water of the coating surface show remarkable scatters since the fluorine is usually difficult to be distributed uniformly on the coating surface. To improve the homogeneity of the water-repellency of the thermal sprayed coating, a surface modification using silane solution was further processed. Optimal processing conditions were investigated. The results show that highly cross-linked polymers characterized with water-repellency were formed on the sprayed coating, and the scatter of the contact angle is decreased. Empirically, the contact angle of the coated surface was 130±5° for water.
ISSN:0042-207X
1879-2715
DOI:10.1016/j.vacuum.2003.12.072