Abstract
Research has been carried out to determine the dependence of corrosion resistance of galvanic zinc and nickel coatings, formed from acid electrolytes with addition of lactic acid, on the electrolysis mode. It is shown that the galvanostatic mode of pulse electrolysis makes it possible to obtain coatings having improved corrosion resistance in the moisture chamber and neutral salt spray. Corrosion resistance of coatings was assessed by changing of the transient electrical resistivity values before and after accelerated corrosion tests. Coatings formed using potentiostatic pulses of rectangular shape are of higher corrosion resistance, which is explained by the positive effect of pulse electrolysis modes on the morphological features of galvanic sludge, and is confirmed by the results of atomic force microscope (AFM) studies.
Export citation and abstract BibTeX RIS
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.