Influence of Sulfur Anions on Corrosion of 16Mn Low-Alloy Steel in Sulfide-Containing Bayer Solutions

Effect of Additional Sulfide and Thiosulfate on Corrosion of Q235 Carbon Steel in Alkaline Solutions

“…This is consistent with what was previously reported that thiosulfate is corrosive activator [3] and inconsistent with the conclusions of Xie et al [13]. So, whether or not the effect of thiosulfate on corrosion of Q235 carbon steel is to accelerate or hinder which mainly depends on the concentration of sulfide when they are synergy corrosion [14].…”

Archives of Metallurgy and Materials

“…So, an electronic reaction may occur at the cathode as shown in reactions (8-11): eiS fitting results of Q235 steel and 16Mn steel according to the priority order of the electron reduction reaction at the cathode, the higher the potential, the reduction reaction occurs preferentially at the cathode. When it comes to gas, it must consider over-potential, so, in contrast to reaction (9), (10) and (11), reaction (8) will not occur. as plain alkaline solution, reaction 8 will occur at the anode.…”

“…as plain alkaline solution, reaction 8 will occur at the anode. Therefore, the cathode reaction may proceed according to the reactions ( 9), ( 10) and (11), and their nernst equations are shown in equations ( 12), ( 13) and ( 14). 12), ( 13) and ( 14).…”

“…The cathode reaction preferentially carried out as for reaction (9). But, reactions (10) and (11) would occur later. as can be seen from reactions (9), (10)…”

“…Chen et al [3] studied the corrosion behavior of 16Mn steel in sulfide-containing Bayer liquid, and the results indicated that S 2anion increase significantly the corrosion rate of the steel and S 2 O 3 2anion had no effect on corrosion of the steel. however, there is the interaction between the coexistence of S 2and S 2 O 3 2in the solution, which is often referred to the corrosion of steel in the literature [9][10][11].…”