High rate anodic dissolution of Fe, Fe13Cr, Fe24Cr, Cr and AISI type 304 stainless steel is studied in NaCl and NaNO3 using a flow channel cell with well-defined hydrodynamic conditions. The apparent valence for dissolution and the surface finish are investigated as a function of current density. Electrochemical etching experiments through photoresist masks are performed with type 304 stainless steel using NaNO3. The influence of current density on the shape and surface finish of the etch grooves and the uniformity of the attack between differently spaced grooves can be qualitatively explained from the electrochemical data obtained on flat electrodes.
E. Rosset, Dr. Madhav Datta, and Landolt, D., “Electrochemical dissolution of stainless steels in flow channel cells with and without photoresist masks”, Journal of applied electrochemistry, vol. 20, pp. 69–76, 1990.