Naslov
A comparative study of the oxide growth and stability of modified inconel-600 electrodes

Autori
Marijan, Dražen ; Vuković, Marijan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
6th International Symposium on Electrochemical Methods in Corrosion Research / Bonora, Pier Luigi - : University of Trento, 1997, B-24

Skup
6th International Symposium on Electrochemical Methods in Corrosion Research

Mjesto i datum
Trento, Italija, 25.08.1997. - 29.08.1997

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
inconel-600; oxide growth; corrosion

Sažetak
The surface modification of inconel-600 by electrochemical, hydrothermal and chemical treatments was studied. Electrochemical modification was carried out using potentiostatic and potentiodynamic polarization of the electrode in 1 mol dm-3 NaOH. Hydrothermal modification was achieved by exposure of the specimen in an autoclave to elevated temperatures and pressures. Inconel-600 was chemically modified using potassium dichromate solution. All of these treatments included a growth of an oxide film which was characterized by cyclic voltammgrams in alkaline solution. The most efficient oxide growth was achieved using square-wave polarization, followed by a triangular potentiodynamic polarization, potentiostatic polarization, hydrothermal and chemical modifications, respectively. Stability of the oxide film was determined by anodic potentiodynamic polarization and open-circuit potentiaol measurements in 0.5 mol dm-3 sulphuric acid. The most stable was hydrothermally oxidized surface. The electrode modified by square-wave pulses was less stable compared to the electrode modified by triangular-time potential program.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA