Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5459529 | Journal of Alloys and Compounds | 2017 | 6 Pages |
Abstract
Titanium-zirconium-molybdenum (TZM) alloy was fabricated by using powder metallurgy and rolling techniques. Electrochemical corrosion behavior of the alloy was studied quantitatively using potentiodynamic polarization and scanning electron microscope. Effect of different chloride ions concentrations on corrosion resistance and electrochemical corrosion mechanism on TZM alloy was investigated. Results show that pitting corrosion and intergranular corrosion of TZM alloy mainly occurs in sodium chloride solution. Corrosion generates firstly in the form of pitting corrosion around second phase particles and increases with corrosive media Clâ concentration increasing, and then the intergranular corrosion occurs along grain boundaries and defects. Clâ corrosion can effectively destroy the passive film formed on the sample surface. As the Clâ concentration of corrosive media increases, the corrosion rate of TZM alloy increases until 1.0Â mol/L and then decreases. TZM alloy exhibits good corrosion resistance when the concentration of Clâ in corrosive media is 0.5Â mol/L or 1.5Â mol/L.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ping Hu, Rui Song, Xiao-jing Li, Jie Deng, Zhen-yu Chen, Qin-wei Li, Kuai-she Wang, Wei-cheng Cao, Dong-xin Liu, Hai-liang Yu,