Electrochemical Behavior of Bulk Amorphous Steel Fe55M2Cr12Mo10B6C13Y2 (M=Ni,Cu,Nb)

被引：0
|
作者：
GUO Jin-hua1
2. China Iron and Steel Research Institute Group
机构：
来源：
Journal of Iron and Steel Research(International) | 2010年 / 17卷 / 05期
关键词：
amorphous steel; polarization curve; electrochemical impedance spectroscopy;
D O I：
10.13228/j.boyuan.issn1006-706x.2010.05.006
中图分类号：
TG142.1 [钢的组织与性能];
学科分类号：
摘要：
Fe55Ni2Cr12Mo10B6C13Y2, Fe55Cu2Cr12Mo10B6C13Y2 and Fe55Nb2Cr12Mo10B6C13Y2 alloys with diameter of 4 mm were produced by copper mold casting. The effect of alloying additions (Ni, Cu or Nb) on corrosion resistance of Fe55Nb2Cr12Mo10B6C13Y2, Fe55Ni2Cr12Mo10B6C13Y2 and Fe55Cu2Cr12Mo10B6C13Y2 alloys was studied by polarization curves and electrochemical impedance spectroscopy (EIS). The results show that Fe55Ni2Cr12Mo10B6C13Y2 and Fe55Cu2Cr12Mo10B6C13Y2 alloys can be cast to form bulk metallic glasses. Fe55Ni2Cr12Mo10B6C13Y2 and Fe55Cu2Cr12Mo10B6C13Y2 amorphous alloys with passive potential about 1500 mV exhibit good corrosion resistance in NaCl solution of 5% and 1 mol/L HCl solution. The passive current density of the alloy with Ni addition is lower than that of other alloys. EIS results only show one impedance element. Amorphous alloy Fe55Ni2Cr12Mo10B6C13Y2 with larger charge transfer reaction resistance indicates good corrosion resistance.
引用
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页码：69 / 73
页数：5
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