EFFECT OF CALCIUM ON THE ANODIC BEHAVIOR OF ALUMINUM CONDUCTOR ALLOY AlTi0.1 IN THE MEDIUM OF THE ELECTROLYTE NaCl

The article presents the results of an experimental study of the effect of calcium on the anodic behavior of the aluminum alloy AlTi0.1, in the medium of NaCl electrolyte. The study was carried out by the potentiostatic method in the potentiodynamic mode at the potential sweep rate of 2 mV / s. It is shown that the modification of the aluminum alloy AlTi0.1 with calcium promotes the displacement of the potentials of free corrosion, pitting formation, and repassivation to the positive range of values. The corrosion rate of the aluminum alloy AlTi0.1 when modified with 0.01-0.5 wt % calcium decreases by 10-17 %.

An in situ exchange mechanism for dye molecules and cations at the nano-semiconductor film/electrolyte interface

This communication uses EQCM in combination with the potentiostatic method to study the in situ exchange mechanism for dye molecules and cations on the nano-film surface under a constant potential.

EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE CORROSION PROPERTIES OF STEEL X13 IN THE ACETIC ACID AT 20 AND 80°С

Polarisation curves of stainless steel Х13 in a 5% NaCl + 0.5% CH3COOH + CH3COONa + CO2 (PCO2 = 0.1 МPa) solution at рН 3 and 4 and temperatures 20 and 80°С were obtained by the potentiostatic method. The corrosion-electrochemical characteristics of the steel in these environments were measured. The potential – pH diagrams of system steel X13 – CH3COOH – CO2 – H2O were constructed and the corrosion behaviour of the steel was determined using these diagrams. The passivation of the steel may proceed due to the formation of iron chromite (FeCr2O4) phase layer and of iron oxalate (FeC2O4) polylayer.