Electrodeposition of BaCO3 coatings on stainless steel substrates: Oriented growth in the presence of complexing agents

摘要

Electrodeposition of BaCO3 from aminecarboxylate stabilized-Ba(HCO3)2 baths, results in oriented crystallization when the bath conditions promote the decomposition of the Ba complex. Crystal growth is predominant along the c-crystallographic axis. The crystallites orient themselves with their c-axis normal to the substrate. The crystallites exhibit three-fold twinning (trilling) consequent to the evolution of the 110 planes as planes of reflection. Pairs of trillings are seen to grow about a four-sided polygon formed by the 010 crystal faces whose centre is a point of inversion.