Naslov
Termodinamički parametri taloženja cerij(III) klorid heptahidrata na površinu aluminijske legure 2024-T3 u kloridnoj otopini
(Thermodynamic parameters of cerium(III) chloride heptahydrate precipitation on the surface of aluminium alloy 2024-T3 in chloride solution)

Autori
Kurtela, Marin ; Šimunović, Vinko ; Alar, Vesna ; Stojanović, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
KORMAT 2020, Stainless Steels / - , 2020, 89-90

Skup
KORMAT 2020, 24 th International conference of materials protection and industrial finish , 463 rd Event of the European Federation of Corrosion

Mjesto i datum
Zagreb, Hrvatska, 26.11.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
AA2024-T3, inhibitor, cerium(III)-klorid heptahidrat, termodinamički parametri, kloridna otopina
(AA2024-T3, inhibitor, cerium(III)-chloride heptahydrate, thermodynamic parameters, chloride solution.)

Sažetak
Corrosion protection of aluminium alloy AA2024-T3 has been studied in chloride solution with and without addition of cerium (III)-chloride heptahydrate. Inhibition efficiency as a function of concentration, temperature and various exposure periods of immersion into 0.01 M NaCl, containing 3 mM, 4 mM and 5 mM of CeCl3 X 7H2O, are investigated at 20 °C. The measurements were carried out using a potentiodynamic polarization method. Electrochemical parameters, which indicate the corrosion behavior of the aluminium in the NaCl solution without and in the presence of inhibitor, were calculated based on the experimental results. The kinetic and thermodynamic parameters of adsorption process were determined. Values of equilibrium adsorption constant Kads and activation energy EA in the presence of inhibitor indicate type of adsorption of the cerium on the alloy surface. The formation of precipitates of Ce3+occurred on cathodic intermetallic sites and the surface in general resulted in improved corrosion resistance. Cerium (III)-chloride heptahydrate has been tested to be an effective corrosion inhibitor for AA2024-T3 in 0.01 M NaCl solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

POVEZANOST RADA