Title

Electrochemical corrosion behavior of platinum-coated lanthanum doped titanium-zirconium-molybdenum alloy

RIS ID

112794

Publication Details

Hu, P., Song, R., Deng, J., Chen, Z., Li, Q., Hu, B., Wang, K., Cao, W., Liu, D. & Yu, H. (2017). Electrochemical corrosion behavior of platinum-coated lanthanum doped titanium-zirconium-molybdenum alloy. Journal of Alloys and Compounds, 706 305-311.

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.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.jallcom.2017.02.259