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核级Ag-In-Cd合金棒材料研究进展
Research Progress of Ag-In-Cd alloy Rod Materials of Nuclear Grade
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- DOI:
- 作者:
- 陈昊 赵涛 邢健 孙海霞
CHEN Hao;ZHAO Tao;XING Jian;SUN Haixia
- 作者单位:
- 西安诺博尔稀贵金属材料股份有限公司
Xi’an Noble Metal Materials Co.,Ltd.,Xi’an 710065,China
- 关键词:
- 核反应堆 控制棒 银铟镉
nuclear reactor control rod Ag-In-Cd alloy
- 摘要:
- 核反应堆用控制棒材料是核电站堆芯部件控制组件的关键功能性材料,具有吸收中子截面积大的特点。控制棒材料通过吸收热中子,改变堆芯中子数量来实现对核裂变链式反应的控制。铪、银、镉及硼元素由于具有优良的中子吸收截面积均用来制备控制棒材料,成品有铪棒、银铟镉控制棒及BN棒等。核级Ag-In-Cd控制棒由于价格低廉、易于加工等特点被广泛应用于压水堆作中子吸收体材料。综述了核级银铟镉控制棒的物理化学性能、机械性能、蠕变性能及在核反应堆中的反应机理、失效机理。Nuclear reactor control rod materials are the key functional materials of nuclear power plant core component control module,which has the characteristics of large neutron absorption cross section.The control rod materials can control the nuclear fission chain reaction by absorbing thermal neutrons and changing the number of neutrons in the core.Hafnium,silver,cadmium and boron elements are used to prepare control rod materials due to their excellent neutron absorption cross sections.The finished products include hafnium rod,silver indium cadmium control rod and BN rod.Nuclear Ag-In-Cd control rod is widely used as neutron absorber material In PWR due to its low price and easy processing.The physical and chemical properties,mechanical properties,creep properties,reaction mechanism and failure mechanism of nuclear grade silver indium cadmium control rod are reviewed.