Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Controllable wettability tuning of the stainless steel surface through successive ionic layer deposition of Zn-Fe layered double hydroxysulfate. / Popkov, Vadim Igorevich; Tolstoy, Valery Pavlovich.
в: Surface and Coatings Technology, Том 409, 126914, 15.03.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Controllable wettability tuning of the stainless steel surface through successive ionic layer deposition of Zn-Fe layered double hydroxysulfate
AU - Popkov, Vadim Igorevich
AU - Tolstoy, Valery Pavlovich
N1 - Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/15
Y1 - 2021/3/15
N2 - An efficient and scalable technique was proposed to control the wettability of stainless steel through successive ionic layer deposition (SILD) of ZnFe layered double hydroxysulfate (LDHS). The composition, structure, and surface characteristics of the coatings were investigated by EDS, XRD, SEM, Raman spectroscopy, and contact angle (CA) analysis. It was found that the coatings consisted of 2D nanocrystals with a thickness of 5–17 nm and a planar size of 55–416 nm, depending on the number of SILD cycles (n = 1–15). It was shown that their growth was accompanied by substrate-relative orientation change: 2D nanocrystals oriented horizontally at n = 1–2 and vertically at n = 3–15. The vertical orientation occurs due to the positive charge of substrate and nanocrystals surface during the SILD which results in their electrostatic repulsion. The SILD modification also leads to a change in surface wettability from weakly hydrophobic (n = 2, CA = 64.7 ± 0.6°) to superhydrophilic (n = 15, CA = 9.2 ± 0.3°). It correlates with established nanocrystals orientation since hydrophilic sulfate groups became more accessible for interaction with water in case of vertical orientation and practically inaccessible for horizontally directed nanocrystals.
AB - An efficient and scalable technique was proposed to control the wettability of stainless steel through successive ionic layer deposition (SILD) of ZnFe layered double hydroxysulfate (LDHS). The composition, structure, and surface characteristics of the coatings were investigated by EDS, XRD, SEM, Raman spectroscopy, and contact angle (CA) analysis. It was found that the coatings consisted of 2D nanocrystals with a thickness of 5–17 nm and a planar size of 55–416 nm, depending on the number of SILD cycles (n = 1–15). It was shown that their growth was accompanied by substrate-relative orientation change: 2D nanocrystals oriented horizontally at n = 1–2 and vertically at n = 3–15. The vertical orientation occurs due to the positive charge of substrate and nanocrystals surface during the SILD which results in their electrostatic repulsion. The SILD modification also leads to a change in surface wettability from weakly hydrophobic (n = 2, CA = 64.7 ± 0.6°) to superhydrophilic (n = 15, CA = 9.2 ± 0.3°). It correlates with established nanocrystals orientation since hydrophilic sulfate groups became more accessible for interaction with water in case of vertical orientation and practically inaccessible for horizontally directed nanocrystals.
KW - 2D nanocrystals
KW - Functional coatings
KW - Layered double hydroxides
KW - Stainless steel
KW - Successive ionic layer deposition
KW - Wettability
KW - NANOLAYERS
KW - OXIDATION
KW - IMPACT
KW - NANOCRYSTALS
KW - CRITICAL HEAT-FLUX
UR - http://www.scopus.com/inward/record.url?scp=85100067582&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2021.126914
DO - 10.1016/j.surfcoat.2021.126914
M3 - Article
AN - SCOPUS:85100067582
VL - 409
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
M1 - 126914
ER -
ID: 77253716