Corrosion behavior of vanadium-base alloys in pressurized water at 288°C☆
Corrosion behavior of vanadium-base alloys in pressurized water at 288°C☆
复制标题
钒基合金在288℃加压水中的腐蚀行为☆
DOI：
10.1016/0022-3115(86)90064-4
复制
发表时间：
1986
影响因子：
3.1
通讯作者：
D. L. Smith
中科院分区：
文献类型：
--
作者：
D. Diercks;D. L. Smith
在含4、0.19和0.03 wppm溶解氧的高纯度高压水中，研究了V-15Cr-5Ti和V-20Ti两热和VANSTAR-7®* * *单热在288°C下的水相腐蚀行为。每种情况下的总暴露时间为2000小时。在所有三种溶解o2水平下，V-15Cr-5Ti合金的腐蚀速率明显低于其他两种合金。它是唯一一种满足聚变反应堆第一壁材料最大腐蚀损耗率标准0.005 ~ 0.020 mm/yr的合金。在V-15Cr-5Ti试样上形成的腐蚀产物中鉴定出了VO2、TiO2（金红石），可能还有cr0.10 v0.90 o2和tiv2o6相。在V-20Ti试样上观察到的唯一相是tio2，而在VANSTAR-7®试样上形成的腐蚀产物无法识别。
The aqueous corrosion behavior of two heats each of V-15Cr-5Ti and V-20Ti, and of a single heat of VANSTAR-7®∗∗, was investigated at 288°C in high-purity pressurized water containing 4, 0.19, and 0.03 wppm dissolved O2. Total exposure time in each case was 2000 h. The V-15Cr-5Ti alloy was found to exhibit substantially lower corrosion rates than did the other two alloys at all three dissolved O2levels. It was the only alloy that appeared to satisfy the maximum corrosion wastage rate criterion of 0.005 to 0.020 mm/yr for fusion reactor first-wall materials. The phases VO2, TiO2(rutile), and possibly Cr0.10V0.90O2and TiV2O6were identified in the corrosion product formed on the V-15Cr-5Ti specimens. TiO2was the only phase observed on the V-20Ti specimens, and the corrosion product formed on the VANSTAR-7® specimens could not be identified.