王智麟,洪亮,金德升,刘虓瀚,宋晓芳,张胜寒

• 1:华北电力大学
• 2:中广核研究院有限公司

摘要(Abstract)：

锌离子注入技术可有效减少压水堆一回路腐蚀和职业辐照剂量。但当燃料棒上发生过冷沸腾时，注入的锌离子具有与一回路冷却剂中的微量硅在燃料棒上形成硅酸锌沉积，导致燃料包壳温度升高及腐蚀加剧的风险。通过热力学方法计算锌注入条件下Zn_2SiO_4的溶解度，分析了Zn_2SiO_4的沉积风险。溶解度计算结果表明，锌离子注入量为40×10~(-9)，一回路冷却剂中含硅量限值为1×10~(-6)时，不形成Zn_2SiO_4沉淀；但当燃料棒表面锌和硅的浓缩倍率达到10倍时，就会有Zn_2SiO_4沉积的风险。

关键词(KeyWords)： 锌离子注入;溶解度;水化学;压水堆

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王智麟,洪亮,金德升,刘虓瀚,宋晓芳,张胜寒

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