Peculiarities of iron-containing microplasma coating deposition on aluminum in homogeneous electrolyte

In this paper the dynamics of microplasma iron-containing coating synthesis on aluminum A1050 alloy is reported. It is found that formation of iron-containing phases in the coating occurs with participation of microarc discharges rather than sparks. Comparison of the coating and corresponding microdischarges collective at different process duration is reported. It is shown that during the process the coating contains two regions with different morphology and composition. Discharge light was investigated by emission spectroscopy. Coatings were characterized by X-ray phase analysis, SEM with energy dispersive analyzer as well as by total iron chemical analysis.

► Alkaline homogeneous electrolyte with Fe-EDTA complexes. ► Changes of coating morphology and discharges collective during microplasma synthesis. ► Discharges spectral characterization.