Research Article

The Electropolishing of C-Steel in Orthophosphoric Acid Containing Methanolic Plant Extract

Figure 5

Characteristic polarization curve for C-steel electropolishing in 8 M H3PO4 containing several concentrations of (a) marjoram, (b) coriander seeds, (c) chamomile, and (d) guava leaves at 25 C.
(a)
(b)
(c)
(d)