| Fe、Cr过饱和固溶量对Zr-4合金耐蚀性的影响 |
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| 引用本文： | 孙国成,童龙刚,高博,吴楠.Fe、Cr过饱和固溶量对Zr-4合金耐蚀性的影响[J].腐蚀与防护,2017,38(7). |
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| 作者姓名： | 孙国成 童龙刚 高博 吴楠 |
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| 作者单位： | 国核宝钛锆业股份公司,宝鸡721013;国家能源核级锆材研发中心,宝鸡721013;陕西省核级锆材重点实验室,宝鸡721013 |
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| 基金项目： | 国家核电技术公司员工自主创新项目专项资金 |
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| 摘 要： | 制备了4种Fe、Cr过饱和固溶量不同的Zr-4合金试样,采用透射电镜分析了4种试样的显微组织,并研究了4种试样在500℃/10.3 MPa和360℃/18.6 MPa/0.01mol/L LiOH水溶液中的腐蚀规律。结果表明:在Zr-4合金未发生疖状腐蚀的情况下,降低α-Zr中过饱和固溶的Fe、Cr含量有利于改善Zr-4合金在500℃/10.3 MPa蒸汽中的耐均匀腐蚀性能。提高α-Zr中过饱和固溶的Fe、Cr含量有利于改善Zr-4合金在LiOH水溶液中的耐均匀腐蚀性能。
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| 关 键 词： | Zr-4合金 Fe、Cr过饱和固溶量 显微组织 耐蚀性 |
Effects of Fe and Cr Supersaturated Solid Solution Contents on Corrosion Resistance of Zr-4 Alloy |
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| SUN Guocheng,TONG Longgang,GAO Bo,WU Nan.Effects of Fe and Cr Supersaturated Solid Solution Contents on Corrosion Resistance of Zr-4 Alloy[J].Corrosion & Protection,2017,38(7). |
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| Authors: | SUN Guocheng TONG Longgang GAO Bo WU Nan |
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| Abstract: | Zr-4 alloy samples with different Fe and Cr supersaturation solid solution contents were prepared.Microstructure of samples was analyzed by transmission electron microscopy,and the corrosion law of those 4 samples was studied in 500 ℃/10.3 MPa steam and 360 ℃/18.6 MPa/0.01 mol/L LiOH solution.The results show that in the case of absence for Zr-4 alloy nodular corrosion,reducing the supersaturated solid solution content of Fe,Cr in α-Zr can improve uniform corrosion of Zr-4 alloy in 500 ℃/10.3 MPa steam.The corrosion resistance of Zr-4 alloy in LiOH solution can be improved by increasing the content of Fe and Cr in supersaturated solid solution in α-Zr. |
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| Keywords: | Zr-4 alloy Fe and Cr supersaturation solid solution contents microstructure corrosion resistance |
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