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将电化学分离Zr-4合金中Zr(Fe,Cr)2第二相粒子的技术和原子吸收光谱分析技术相结合,建立了一种分析Zr-4合金a-Zr固溶体中Fe、Cr含量的新方法,并用这种新方法分析了不同热处理状态下Zr-4合金a-Zr固溶体中的Fe、Cr含量。分析结果表明,随着淬火温度的增加,a-Zr固溶体中的Fe、Cr含量和Fe/Cr比值均增加,而Zr(Fe,Cr)2第二相粒子中的Fe/Cr比值则相应降低。结合以前的工作,可得结论:过饱和固溶在a-Zr固溶体中的Fe、Cr含量对Zr-4合金的耐水侧腐蚀性能有重要影响。
The electrochemical separation of Zr (Fe, Cr) 2 second-phase particles in Zr-4 alloy and atomic absorption spectrometry were combined to establish a new method to analyze the content of Fe and Cr in the a-Zr solid solution The new method was used to analyze the contents of Fe and Cr in the a-Zr solid solution of Zr-4 alloy under different heat treatment conditions. The results show that with the increase of quenching temperature, the content of Fe and Cr and the ratio of Fe / Cr in a-Zr solid solution increases, while the ratio of Fe / Cr in the second phase particles of Zr (Fe, Cr) 2 decreases . Combined with the previous work, it can be concluded that the content of Fe and Cr in supersaturated solid solution in a-Zr solid solution has an important influence on the water-side corrosion resistance of Zr-4 alloy.