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

Figure 10

C-steel surface morphology before and after electropolishing at 298 K in the absence and presence of natural extracts. (a) Raw C-steel sample before EP. (b) After EP without addition (blank). (c) After EP + 100 ppm guava leaves extract. (d) After EP + 500 ppm guava leaves extract. (e) After EP + 100 ppm chamomile extract. (f) After EP + 500 ppm chamomile extract. (g). After EP + 100 ppm coriander seeds extract. (h) After EP + 500 ppm coriander seeds extract. (i) After EP + 100 ppm marjoram extract. (j) After EP + 500 ppm marjoram extract.

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