新型含钆镍基屏蔽材料组分配比研究  

Research on composition optimization of new Gd-containing Ni-based materials

作　　者：高静 彭超 梅其良[1] 黎辉[1] 郑征[1] 王梦琪[1] GAO Jing;PENG Chao;MEI Qiliang;LI Hui;ZHENG Zheng;WANG Mengqi(Shanghai Nuclear Engineering Research&Design Institute Co.Ltd.,Shanghai 200233)

机构地区：[1]上海核工程研究设计院股份有限公司,上海200233

出　　处：《辐射防护》2024年第S01期60-66,共7页Radiation Protection

摘　　要：基于蒙特卡罗粒子输运程序,建立了一种新型复合屏蔽材料组分配比研究方法与计算流程;通过对不同基体与掺杂元素的材料特性分析,初步筛选出复合材料基本组分,模拟计算了不同含Gd复合材料在典型中子与光子能量下的十分之一值层厚度,并与高硼钢的屏蔽效果进行对比分析。结果表明,含Gd镍基材料在各中子、光子能量下均表现出优良的屏蔽性能。针对镍基合金材料,计算分析Gd含量对该材料中子屏蔽性能的影响规律,研究发现随着Gd含量的增大,材料中子屏蔽性能先提升后下降,且中子屏蔽效果始终优于不含Gd的镍基材料,但存在掺杂量最佳值。Based on Monte Carlo particle transport program,a research method and calculation process for the composition optimization of a new shielding material were established.By analyzing the material properties of different matrices and doping elements,the basic components of the composites were preliminarily screened.The one-tenth layer thickness of different Gd-containing composite material at typical neutron and photon energies was simulated and calculated,and the shielding effect was compared with that of high boron stainless steel.The results show that the Gd-containing nickel-based material exhibits excellent shielding performance at various neutron and photon energies.For nickel-based alloy materials,the influence of Gd content on the neutron shielding performance was calculated and analyzed.It was found that with the increase of Gd content,the neutron shielding performance of the material first improved and then decreased,and the neutron shielding effect was always better than that of nickel-based materials without Gd,while there was a optimum doping amount.

关 键 词：屏蔽材料 镍基合金 组分配比 蒙特卡罗 

分 类 号：TL752.3[核科学技术—辐射防护及环境保护] TL344