Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5461215 | Journal of Alloys and Compounds | 2017 | 7 Pages |
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 Clâ 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 Clâ destroys the corrosion formed on the surface passivation film, OHâ and Clâ double erosion promoted La-TZM alloy intergranular corrosion increased during the electrochemical corrosion processes.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ping Hu, Rui Song, Jie Deng, Zhen-yu Chen, Qin-wei Li, Bo-liang Hu, Kuai-she Wang, Wei-cheng Cao, Dong-xin Liu, Hai-liang Yu,