Flower-like superhydrophobic surfaces fabricated on stainless steel as a barrier against corrosion in simulated acid rain

Povzetek

Functionalisation of the metal surface of low-carbon ferritic stainless steel (from hydrophilic to hydrophobic properties) was achieved by flower-like hierarchical structures on a steel substrate prepared by a low-cost immersion method. The flower-like structured hydrophobic layers on the steel substrate were obtained by immersing the samples in an ethanolic solution of stearic acid with the addition of various concentrations of expired vitamin E ((+)α-tocopherol). The stability and corrosion-inhibiting effect of the hierarchically structured (such as natural cornflower) hydrophobic layers were studied systematically during short and long immersion tests, 120 h (five days) in an acidic environment (pH = 3) using potentiodynamic measurements, electrochemical impedance spectroscopy and chronopotentiometry. The surfaces of the samples, their wettability, surface morphology and chemical composition were characterised by contact angle measurements, SEM, ATR-FTIR and EDAX. After 120 h of immersion, the inhibition efficiency of the flower-like structured hydrophobic layers on the steel substrate in the selected corrosion medium remained above 99%, and the hierarchical structure (flower-like structure) was also retained on the surface.

Ključne besede

kisel dež;korozija;inhibicija;nerjaveče jeklo;acid rain;corrosion;flower-like structure;inhibition;stainless steel;

Podatki

Jezik:	Angleški jezik
Leto izida:	2022
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Založnik:	MDPI
UDK:	620.1/.2
COBISS:	126257411
ISSN:	1996-1944
Št. ogledov:	0
Št. prenosov:	4
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	kisel dež;korozija;inhibicija;nerjaveče jeklo;
Vrsta dela (COBISS):	Znanstveno delo
Strani:	23 str.
Letnik:	ǂVol. ǂ15
Zvezek:	ǂiss. ǂ20
Čas izdaje:	13 Oct. 2022
DOI:	10.3390/ma15207104
ID:	25459697