Fig. 10

Typical surface morphologies of the CuCrFeNiMn system after immersion tests in 1 M sulphuric acid for 100 h: a CuCrFeNiMn (S1), b CuCr2Fe2Ni2Mn2 (S4), c Cu2CrFe2NiMn2 (S5), d 304 stainless steel (a–d reprinted from ref. 59 with permission of John Wiley and Sons)