Study on Influence of Tetragonal ZrO2 in Oxide Film on Corrosion Resistance of Zr-Sn-Nb Alloy

✍ Scribed by Geng Xun; Liu Qingdong; Liu Wenqing; Yao Meiyi; Zhou Bangxin

• Book ID: 104453478
• Publisher: Elsevier
• Year: 2008
• Weight: 244 KB
• Volume: 37
• Category: Article
• ISSN: 1875-5372
• DOI: 10.1016/s1875-5372(09)60038-2

✦ Synopsis

Zr-Sn-Nb alloy specimens treated in different ways were exposed to 0.01 mol/L LiOH aqueous solution at 350 °C, 16.8 MPa in autoclave. Spectroscopy Ellipsometry (S-E) was applied to investigate the effect of tetragonal ZrO 2 (t-ZrO 2 ) in oxide film on corrosion resistance of Zr-Sn-Nb alloy. It was found that the 580 °C /C. R/500 °C specimen corroded for 42 d and 190 d have more t-ZrO 2 than other two specimens. But it is converse to the corrosion rate. It is suggested that the small amount of t-ZrO 2 is a main factor to affect the corrosion resistance ability and the corrosion resistance is improved by the formation of t-ZrO 2 .