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- W3146415115 abstract "Effect of nitrogen content on the microstructure and erosion-corrosion (E-C) behavior of stainless steel (containing about 25%Cr,5%-6%Ni,and 1%-2%Mo)was investigated by using optical microscope(OM),potentiodynamic polarization curve and immersion method,a self-made rotating disk apparatus and scanning electron microscopy (SEM) and so on. The results show that with the increase of nitrogen content from 0 (no adding) to 0.485 wt.%,the Creq/Nieq ratio of the tested materials decreases from 4.14 to 1.23 and the ferrite volume percentage of the steel tested linearly decreases approximately from 90% to 10%. The effect of nitrogen content on polarization behavior of the studied steel was not significant. All the passive current densities (Ip)and pure corrosion rates (Vc) of the different N content specimens in the acidic solution (slurry containing 0.1 M H2SO4+0.06%CI-+0.4%F-,the simplified zinc hydrometallurgy slurry) are too low and nearly negligible. Whereas the pure erosion rates (Ve) of the four scenarios of the steels tested (N content,wt.%:N1,no adding;N2,0.143%;N3,0.289%;N4,0485%,respectively) are much higher than their Vc values. The Ve values of the tested steels are in the order of N4 > N1 > N3 > N2,at the same time,the total weight loss rates (Vt) follow the order of N4 > N1>N3 > N2,too. N2 steel consisting of approximately equal volume fractions of ferrite (α) and austenite (γ) exhibits the most excellent E-C resistance and erosion resistance,while the stainless steels possessing the big difference between a phase and γ phase,such as N1 steel nearly possessing single ferrite or N4 steel nearly possessing single austenite,show poorer E-C resistance and erosion resistance." @default.
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- W3146415115 date "2009-01-01" @default.
- W3146415115 modified "2023-09-24" @default.
- W3146415115 title "Effect of nitrogen addition on microstructure and erosion-corrosion behavior of stainless steel in acidic slurry" @default.
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