海正银,辛长胜,王辉.冷却剂加锌对核电结构材料腐蚀行为的影响[J].稀有金属材料与工程,2019,48(2):683~687.[haizhengyin,xinchangsheng,wanghui.Corrosion Behavior of Nuclear Structural Materials in Zn Water Chemistry[J].Rare Metal Materials and Engineering,2019,48(2):683~687.]
冷却剂加锌对核电结构材料腐蚀行为的影响
投稿时间:2017-06-08  修订日期:2017-07-18
中文关键词:  冷却剂  加锌水化学  核电  腐蚀  氧化膜
基金项目:
中文摘要:
      本文选用与核电站一回路冷却剂接触面积最大的结构材料690合金和316LN不锈钢为研究对象。在模拟PWR一回路水化学环境下,采用静态高压釜浸泡方法和高温电化学方法研究加锌对这两种结构材料腐蚀行为的影响,发现加锌能够明显抑制材料的均匀腐蚀速率和腐蚀产物释放速率,与不加锌相比,长期运行时,加锌最多能使316LN和690合金腐蚀速率分别降低1.4倍和1.5倍,腐蚀产物释放速率最多降低2.3倍。高温水中,以醋酸锌形式加锌,锌浓度为10~50ppb时,能有效抑制腐蚀速率和腐蚀产物释放速率,加锌50ppb以上,加锌浓度对腐蚀速率和腐蚀产物释放速率的影响不明显。
Corrosion Behavior of Nuclear Structural Materials in Zn Water Chemistry
英文关键词:Zinc addition  structural materials  corrosion  high temperature electrocchemistry
英文摘要:
      This paper selects 316LN and Alloy 690, the structural materials with largest contact area with nuclear power plant primary circuit coolant as research objects. Under simulated Pressurized Water Reactor (PWR)primary circuit water chemistry condition, we use static autoclave immersion method and high temperature elec-trocchemistry to study the effect of zinc concentration on corrosion behavior of these two structural materials. The results show that zinc addition can inhibit corrosion rate of materials and corrosion product releasing rate obviously. Compare with Zn-free condition, zinc additioncan make corrosion rate of 316LN and Alloy 690 re-duce by 1.4 times and 1.5 times and reduce corrosion product release rate by 2.3 times at most,respectively. When zinc concentration is 10~50ppb, it can inhibit corrosion rate and corrosion product release rate effectively. When Zn concentration is above 50ppb, Zn concentration doesn’t have obvious effect on corrosion rate and corrosion product release rate.
作者单位E-mail
海正银 1中国原子能科学研究院 haizhengyin@139.com 
辛长胜 1中国原子能科学研究院  
王辉 1中国原子能科学研究院  
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