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- W2391343827 abstract "The corrosion of titanium tray is obliged to be solved in the safe and steady production process of acetic acid distillation column.However,the factors affecting the corrosion are various,and many of the corrosion rules are still not clear.According to the real corrosion environment of the acetic acid distillation column made of titanium in a chemical plant,the corrosion behavior of titanium in a series of imitated acetic acid azeotropic solutions was in-situ investigated by electrochemical impedance spectrograph and potentiodynamic polarization measurements,and the morphology changes after corrosion were observed by metallurgical microscope.By simulating and calculating the polarization and impedance curves,the corrosion kinetics parameters were obtained. The influence rules of solution concentration and corrosion time on the corrosion behavior of titanium were discussed,and the corrosion mechanism was analyzed.The experimental results show that acetic acid concentration and corrosion time affect greatly the corrosion behavior of titanium.In an azeotropic solution with high acetic acid content,titanium is much easier to be passivated. When the acetic acid concentration increases from 60%to 97.5%,the passivation film resistance increases from 486.7 to 16000 Ohm,and the corrosion rate decreases from 5.80×10~(-10) to 5.66×10~(-11)g/(m~2·a).However,increase of corrosion time will destroy the passivation film.In an azeotropic solution with 97.5%acetic acid,the passivation film resistance decreases from 16000 to 146000 Ohm,and the corrosion rate increases from 5.66×10~(-11) to 2.97×10~(-10)g/(m~2·a) as corrosion time increases from 30 to 60 min.The results are significant for the protection of titanium in industrial acetic acid distillation columns." @default.
- W2391343827 created "2016-06-24" @default.
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- W2391343827 date "2012-01-01" @default.
- W2391343827 modified "2023-09-23" @default.
- W2391343827 title "Influence of Acetic Acid Density on Corrosion of Titanium in Azeotropic Solution" @default.
- W2391343827 hasPublicationYear "2012" @default.
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