Fig. 3
From: Inhibiting hydrogen embrittlement in ultra-strong steels for automotive applications by Ni-alloying
a Weight loss measurements after the long-term immersion test for four weeks. b Cross-sectional morphologies of N1 and N3 observed after the long-term immersion test. c EDS-mapping analyses on the cross-sectional regions shown in (b). d Linear polarization resistance tests of N1 and N3, measured after 3 h pre-exposure in a 3.5% NaCl solution
