Modeling of the Growth Kinetics of Boride Layers in Powder-Pack Borided ASTM A36 Steel Based on Two Different Approaches

Figure 3

SEM micrographs of the cross sections of ASTM A36 steel samples borided at 1123 K during different exposure times: (a) 2 h, (b) 4 h, (c) 6 h, and (d) 8 h.

(a)

(b)

(c)

(d)