Plate 1. Microstructure of the Mild Steel after treatment with Arecaceae Flower Droppings with dark phases of martensite and varying degrees of carbide, obviously indicating increased carbon content at the surface,( 2% nital etched 100 x)

From

Investigation of Egg Shell Waste as an Enhancer in the Carburization of Mild Steel

Ihom A.Paul, Nyior G. Bem, Nor I. Justine, Ogbodo N. Joy

American Journal of Materials Science and Engineering. 2013, 1(2), 29-33 doi:10.12691/ajmse-1-2-3