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Robust Technique Allowing the Manufacture of Superoleophobic (Omniphobic) Metallic Surfaces[Note 2. Surface tensions are extracted from ref.[17a] ...]
Author(s) -
Starostin Anton,
Valtsifer Viktor,
Strelnikov Vladimir,
Bormashenko Edward,
Grynyov Roman,
Bormashenko Yelena,
Gladkikh Alexander
Publication year - 2014
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201300561
Subject(s) - materials science , metal forming , nanotechnology , metal , composite material , metallurgy
Omniphobic metallic surfaces obtained with a robust two‐stage process are reported. The surfaces demonstrate high apparent contact angles accompanied with a low contact angle hysteresis for a variety of liquids, including water, diidomethane, canola, castor, silicone oils, and crude petroleum oil. The superoleophobicity was achieved by fluorination of the nano‐rough aluminum surfaces under treatment with perfluorononanoic acid, as established by TOF‐SIMS spectrometry. The stability of the Cassie wetting regime was investigated. The critical surface tension of a liquid corresponding to the onset of wetting transitions was established experimentally.