EFFECT OF CERIUM ION IMPLANTATION ON THE AQUEOUS CORROSION BEHAVIOR OF ZIRCONIUM
来源期刊：Acta Metallurgica Sinica2004年第6期
论文作者：X.D.Bai X.Y.Liu X.W.Chen D.Q.Peng Q.G.Zhou R.H.Yu
Key words：zirconium; corrosion resistance; cerium ion implantation; potentio dynamic polarization; X-ray photoelectron spectroscopy (XPS);
Abstract: In order to study the influence of cerium ion implantation on the aqueous corrosion behavior of zirconium, specimens were implanted by cerium ions with a dosage range from 1 ×1016 to 1 ×1017 ions/cm2 at about 150℃, using MEWA source at an acceler ative voltage of 40kV. The valence of the surface layer was analyzed by X-ray photoelectron spectroscopy (XPS); Three-sweep potentiodynamic polarization measurement was employed to value the aqueous corrosion resistance of zirconium in a 0.5mol/L H2SO4 solution. It was found that a remarkable decline in the aqueous corrosion behavior of zirconium implanted with cerium ions compared with that of the as-received zirconium. Finally, the mechanism of the corrosion resistance decline of the cerium-implanted zirconium is discussed.
X.D.Bai1，X.Y.Liu1，X.W.Chen1，D.Q.Peng1，Q.G.Zhou1，R.H.Yu1
(1.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China)
Abstract:In order to study the influence of cerium ion implantation on the aqueous corrosion behavior of zirconium, specimens were implanted by cerium ions with a dosage range from 1 ×1016 to 1 ×1017 ions/cm2 at about 150℃, using MEWA source at an acceler ative voltage of 40kV. The valence of the surface layer was analyzed by X-ray photoelectron spectroscopy (XPS); Three-sweep potentiodynamic polarization measurement was employed to value the aqueous corrosion resistance of zirconium in a 0.5mol/L H2SO4 solution. It was found that a remarkable decline in the aqueous corrosion behavior of zirconium implanted with cerium ions compared with that of the as-received zirconium. Finally, the mechanism of the corrosion resistance decline of the cerium-implanted zirconium is discussed.
Key words:zirconium; corrosion resistance; cerium ion implantation; potentio dynamic polarization; X-ray photoelectron spectroscopy (XPS);
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