节点文献
新锆合金在两种不同介质中的耐蚀行为
Corrosion Resistance of New Zirconium Alloys in Different Media
【摘要】 研究了几种ZrSnNbFeCr新锆合金在400℃,10.3MPa及在360℃,18.6MPa含7×10-5锂的氢氧化锂水中的耐蚀行为;用TEM和SEM对合金中的第二相的结构和组分进行了分析。研究结果表明:添加少量Nb(0.2w%)的该类合金具有最好的综合耐蚀性能;低Fe/Cr比的高Nb(1.0w%)合金耐蚀性能均较差;而高Fe/Cr比的高Nb合金在400℃蒸汽中具有较好的耐蚀性能,但在氢氧化锂水中则较差。对产生这些差异的原因从第二相结构、组分等角度进行了分析。
【Abstract】 The corrosion resistances of some ZrSnNbFeCr alloys have been investigated at 400℃/10 3 MPa steam and 360℃/18 6 MPa lithium hydroxide solution with 7×10 -5 Li, respectively. The structure and composition of the second phases in the alloys were determined using TEM and EDAX. The results show that the alloy with low Nb content (0 2 wt%)has superior corrosion resistance in both media. The alloy with high Nb content(1 0wt%) and low Fe/Cr ratio has worse corrosion resistance in both media. The alloy with high Nb content and high Fe/Cr ratio has better corrosion resistance in steam and worse corrosion resistance in lithium hydroxide solution. The different performances of the alloy with low Nb content and low Fe/Cr ratio in various media result from the structures and compositions of the second phases.
- 【文献出处】 稀有金属材料与工程 ,RARE METAL MATERIALS AND ENGINEERING , 编辑部邮箱 ,1999年02期
- 【分类号】TG146.414
- 【被引频次】36
- 【下载频次】230