hrvatski jezikClear Cookie - decide language by browser settings

Surface modification of stainless steel-304 electrode. 2. An experimental comparative study of electrochemically, hydrothermally and chemically modified oxide films

Marijan, Dražen; Slavković, Renata; Vuković, Marijan (1999) Surface modification of stainless steel-304 electrode. 2. An experimental comparative study of electrochemically, hydrothermally and chemically modified oxide films. Croatica Chemica Acta, 72 (4). pp. 751-761. ISSN 0011-1643

[img] PDF - Published Version
Download (226kB)

Abstract

Stainless steel-304 was modified electrochemically by potentiostatic and potentiodynamic methods (triangular and square-wave potential-time programs) in 1 mol dm(-3) NaOH solution, hydrothermally in 1 mol dm(-3) NaOH at 200 degrees C, and chemically in 0.5 mol dm(-3) K2Cr2O7 solution. Oxide films were characterized voltammetrically by the charge of Fe(OH)(2)/FeOOH surface electrochemical reaction. The stability of the oxide films was measured in 0.5 mol dm(-3) H2SO4 by anodic potentiodynamic polarization and by open-circuit potential-time measurements. The hydrothermally grown oxide film was most stable. The most efficient oxide growth was achieved by the use of square-wave type of modification. The oxide modified by this procedure exhibited lower stability than the oxide grown by triangular potential-time program, which was much more stable due to the uncompleted reduction of chromium oxide. The importance of careful control of experimental conditions, where a small change in surface treatment could lead to a significant change in corrosion behaviour, is pointed out.

Item Type: Article
Uncontrolled Keywords: stainless steel-304; surface modification; oxide growth; passive oxide films
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Division for Marine and Enviromental Research
Projects:
Project titleProject leaderProject codeProject type
Granica faza čvrsto/tekućeMarijan Vuković00981507MZOS
Novi netoksični inhibitori korozije metalaEma Stupnišek-Lisac125012MZOS
Depositing User: Tomislav Štrkalec
Date Deposited: 25 Nov 2013 09:09
Last Modified: 28 Feb 2014 12:11
URI: http://fulir.irb.hr/id/eprint/1099

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year