Izvorni znanstveni članak

Corrosion properties of chromia based eco - friendly coatings on mild steel

V. Brozek ; Institute of Plasma Physics CAS v.v.i. Prague, Czech Republic
P. Pokorny ; Czech Technical University – Klokner Institute, Prague, Czech Republic
P. Bouska ; Czech Technical University – Klokner Institute, Prague, Czech Republic
J. Stoulil ; University of Chemistry and Technology Prague, Czech Republic
L. Mastny ; University of Chemistry and Technology Prague, Czech Republic

Sažetak

Ceramic nanocrystalline coatings of chromium oxide (III) on steel S235JRH-1.0038 (EN 10025-1) were prepared using the liquid precursor plasma spraying (LPPS) method from ammonia dichromate (VI). Their structure and anti – corrosion properties were compared to the standard chromium oxide (III) coating prepared by thermal spraying. The newly prepared coatings had very high adhesion and minimal porosity. Anticorrosion properties were characterized by the means of the electrochemical impedance spectroscopy (EIS), measuring the charge transfer resistance R_ct and capacitance of electrical double layer CPE_dl in the 0,5 mol/l NaCl. Coatings of Cr₂ O₃ prepared by the LPPS method showed unambiguously improved anti - corrosion properties.

Ključne riječi

ceramic; steel coating; corrosion; plasma spraying

Hrčak ID:

157395

URI

https://hrcak.srce.hr/157395

Datum izdavanja:

1.10.2016.

Posjeta: 1.590 *