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51316-7135-The pitting corrosion of titanium in aggressive environments

This study presents an overview of a number of factors influencing the pitting corrosion of Ti in aggressive environments. Effects of temperature and metal cations on pitting corrosion of Ti. 

Product Number: 51316-7135-SG
ISBN: 7135 2016 CP
Author: Jing Liu
Publication Date: 2016
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$20.00
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This study presents an overview of a number of factors influencing the pitting corrosion of Ti in aggressive environments. Firstly, the effects of temperature and metal cations on the pitting corrosion of Ti are summarized based on previous research. The pitting corrosion of Ti in chloride solutions is strongly temperature-dependent; the breakdown potential Eb decreases as the operating temperature increases. The presence of oxidizing metal cations can cause severe pitting on Ti in chloride solutions. Secondly, the inhibition effects of different oxygen-containing anions, such as CrO42−, HPO42−, SO42−, SeO42− and S2O32−, on the pitting corrosion of Ti in Cl− solutions at 150°C are explored. SO42−, SeO42−, CrO42− and HPO42− anions all retards the pitting corrosion of Ti in Cl− solutions. The inhibition effect decreases in the order: CrO42−> SO42− = SeO42− > HPO42−. On the other hand, S2O32− and Cl− ions have a synergistic effect in inducing localized corrosion on Ti.

Key words: pitting corrosion, aggressive, temperature, metal cation, oxygen-containing anion

This study presents an overview of a number of factors influencing the pitting corrosion of Ti in aggressive environments. Firstly, the effects of temperature and metal cations on the pitting corrosion of Ti are summarized based on previous research. The pitting corrosion of Ti in chloride solutions is strongly temperature-dependent; the breakdown potential Eb decreases as the operating temperature increases. The presence of oxidizing metal cations can cause severe pitting on Ti in chloride solutions. Secondly, the inhibition effects of different oxygen-containing anions, such as CrO42−, HPO42−, SO42−, SeO42− and S2O32−, on the pitting corrosion of Ti in Cl− solutions at 150°C are explored. SO42−, SeO42−, CrO42− and HPO42− anions all retards the pitting corrosion of Ti in Cl− solutions. The inhibition effect decreases in the order: CrO42−> SO42− = SeO42− > HPO42−. On the other hand, S2O32− and Cl− ions have a synergistic effect in inducing localized corrosion on Ti.

Key words: pitting corrosion, aggressive, temperature, metal cation, oxygen-containing anion

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