1. Electrochemical corrosion behavior of platinum-coated lanthanum doped titanium-zirconium-molybdenum alloy.
- Author
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Hu, Ping, Song, Rui, Deng, Jie, Chen, Zhen-yu, Li, Qin-wei, Hu, Bo-liang, Wang, Kuai-she, Cao, Wei-cheng, Liu, Dong-xin, and Yu, Hai-liang
- Subjects
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ELECTROLYTIC corrosion , *SURFACE coatings , *ELECTROCHEMISTRY , *DOPING agents (Chemistry) , *PLATINUM compounds - Abstract
Electrochemical corrosion behavior of platinum coated (Pt-coated) lanthanum doped titanium-zirconium-molybdenum alloy (La-TZM alloy) was studied in this paper. La-TZM alloy plates were fabricated using powder metallurgy and rolling technique, and platinum was coated on their surfaces by using electroplating. Corrosion behavior of Pt-coated La-TZM alloy samples were investigated in neutral and alkaline medium while the Cl − concentrations keep invariant, which was quantitatively analyzed using potentiodynamic polarization, scanning electron microscope and energy spectrum techniques. Results show that the Pt-coating can improve the corrosion resistance of the La-TZM alloy. Pt-coating on La-TZM alloy can effectively hinder the matrix alloy electrochemical corrosion during different corrosion mediums. In addition, the Pt-coating on La-TZM alloy in a neutral medium is more corrosion resistant than that in an alkaline medium. Pt-coating can effectively hinder the Cl − destroys the corrosion formed on the surface passivation film, OH − and Cl − double erosion promoted La-TZM alloy intergranular corrosion increased during the electrochemical corrosion processes. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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