中文摘要：

利用电化学极化和阻抗谱（EIS）技术研究了Zr55Al10Ni5Cu30及（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金及相应的晶态合金在0．50mol·L^-1Na2SO4溶液中的腐蚀行为。结果表明，Zr55Al10Ni5Cu30及（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金及相应的晶态合金在0．50mol·L^-1Na2SO4溶液中均出现了钝化现象，其中（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金出现了二次钝化现象。Zr55Al10Ni5Cu30及（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金的腐蚀电流密度均小于相应的晶态合金，向非晶合金Zr55Al10Ni5Cu30及相应的晶态合金中添加稀土Ce元素后，合金的腐蚀电流密度减小，腐蚀速度降低，合金的抗腐蚀性能提高。四种合金的EIS图均呈单容抗弧特征，Zr55Al10Ni5Cu30及（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金的电荷传递电阻均较相应成分的晶态合金大。两种非晶合金在0．50mol·L^-1Na2SO4溶液中比晶态合金有较好的抗蚀性能，在四种合金中，添加Ce元素的（Zr55Al10Ni5Cu30）0.97Ce0.03非晶合金具有最好的耐蚀性能。

英文摘要：

Corrosion behaviors of Zr55All0Ni5Cu30 and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloys and their corresponding crystal alloys in 0.50 mol. L^-l Na2SO4 solution were studied by potentiodynamic polarization experiments and electrochemical impedance spectroscopy （EIS）. The results show that Zr55All0Ni5Cu30 and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloys and their corresponding crystal alloys in 0.50 mol· L^- 1 Na2SO4 solution all produce passive phenomenon, when the （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloy has two passive phenomenon. Zr55All0Ni5Cu30 and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloys have lower current densities as compared with the Zr55All0Ni5Cu30 and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 crystal alloys. Both （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloy and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 crystal alloy have smaller current densities, and therefore corrosion resistance increased. Electrochemical impedance spectroscopy （EIS） plots of four alloys are composed of single capacitive loop. Zr55All0Ni5Cu30 and （Zr55All0Ni5Cu30 ）0.97 Ce0.03 bulk amorphous alloys have larger charge transfer resistance and better corrosion resistance than their corresponding crystal alloys.