摘要
利用扫描电镜、能谱分析和X射线衍射研究质子辐照前后的奥氏体不锈钢AL-6XN在高温高压水中的腐蚀行为。结果表明,未辐照的样品在高温高压水中生成了完整的氧化膜,样品增重随着浸泡时间的增加而增加,温度越高腐蚀增重越显著。经过质子辐照后的材料在290℃/10 MPa水中氧化膜发生了严重的溶解,浸泡后样品出现了失重,在550℃/25 MPa超临界水中外层氧化膜发生了剥落,且浸泡时间越长,氧化膜剥落越严重。质子辐照不影响氧化膜的元素组成和相结构,同时建议了质子辐照后奥氏体不锈钢在高温水中氧化膜剥落的模型。
The corrosion behavior of austenite stainless steel Al-6XN exposed in high temperature high pressure water for different periods was investigated. The results showed that compact oxide scale could form on unirradiation sample in sub- and supercritical water. The oxide scale formed on irradiation sample exhibited obvious dissolution in sub-critical water and oxide scale exfoliated in supercritical water. Proton irradiation could not alter the chemical elements and phase structure of the oxide film. The oxide scale exfoliation model for the protons irradiated austenitic stainless steel exposed in high temperature water was proposed.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2012年第5期381-387,共7页
Journal of Chinese Society For Corrosion and Protection
基金
江苏省自然科学基金(BK2011317)
广东核电集团项日(CGNPC2010S096-09)资助
关键词
超临界水堆
辐照
腐蚀
氧化膜
supercritical water coolant reactor, irradiation, corrosion, oxide scale
