钇离子注入锆的动电位极化曲线研究

Study on Potentiodynamic Polarization Curves of Yttrium-Implanted Zirconium

摘要:

通过对锆表面进行不同剂量的钇离子注入及对电位极化曲线的测量，分析了钇离子注入对锆电化学行为的影响。结果表明：钇离子注入能明显地提高锆在酸性、中性及碱性环境中的耐腐蚀性能。用X光电子能谱(XPS)分析了离子注入样品表层的成分与价态，进而探讨了钇离子注入表面改性的机理。

Abstract:

Because of their excellent properties, zirconium and its alloys are often applied for engineering use in the nuclear industry, working as fuel cladding and core structural material. In the paper, the effect of yttrium implantation on the electrochemical behavior was studied by the measurement of potentiodynamic polarization curves. It was shown that corrosion resistance of zirconium in acid, temperate and alkaline solutions can be improved by yttrium implantation. The composition and the valence of the yttrium ions in the surface layer were analyzed by X-ray photoemission spectroscopy (XPS), and the mechanism of the corrosion resistance improvement of the yttrium-implanted zirconium was discussed.