TITLE:
The Influence of Different Contents of Bi Addition on the Corrosion Behavior of Various Zirconium-Based Alloys
AUTHORS:
Meiyi Yao, Xiaotong Wu, Wenrong Duan, Weipeng Zhang, Li Zhu, Linghong Zou, Jinlong Zhang, Qiang Li, Bangxin Zhou
KEYWORDS:
Bi, Zirconium Alloy, Corrosion Resistance, SPPs
JOURNAL NAME:
Journal of Environmental Protection,
Vol.7 No.4,
March
10,
2016
ABSTRACT: Zr-4(Zr-1.5Sn-0.2Fe-0.1Cr,wt%),
S5(Zr-0.8Sn-0.34Nb-0.39Fe-0.1Cr), T5(Zr-0.7Sn-1.07Nb-0.32Fe-0.08Cr) and Zr-1Nb
were adopted to prepare Bi-containing zirconium alloys for systematically
investigating the effect of Bi addition on the corrosion resistance of
zirconium alloys. The specimens were corroded in superheated steam at 400℃/10.3 MPa,
and in lithiated water with 0.01 M LiOH or in deionized water at 360℃/18.6 MPa by
autoclave testing. Results show that the corrosion resistance increases with
the increasing of Bi content dissolved in α-Zr. But the presence of Bi-con-
taining second phase particles (SPPs) is unfavorable for the enhancement of
corrosion resistance. This indicates that the Bi dissolved in α-Zr matrix plays
an important role in improving the corrosion resistance, while the
precipitation of the Bi-containing SPPs does harm to the corrosion resistance.