Fig. 4
From: Inhibiting hydrogen embrittlement in ultra-strong steels for automotive applications by Ni-alloying
a SSRT curves of N1 and N3 evaluated in a neutral sol. (3.5% NaCl + 0.3% NH4SCN) and acidic sol. (0.2 M CH3COONa + 0.185 M HCl) after 6 h pre-exposure in each solution. b Surface morphologies of N1 and N3 observed after immersion in the two solutions for 15 h
