作者机构：
[Yongxia Liu; Shuliang Zou; Ruirui Tang] School of Mechanical Engineering,University of South China;[Yongxia Liu; Shuliang Zou; Ruirui Tang] Hunan Key Laboratory of Nuclear Facilities Emergency Safety Technology and Equipment
会议名称：
2018 International Conference on Mechanical,Electrical,Electronic Engineering & Science(MEEES 2018)
会议时间：
2018-05-26
会议地点：
中国重庆
摘要：
In the development of anti-radiation excavator, the structure-design of lead glass windows is a key problem needs to solve. By conducting the irradiation and sun exposure experiment of ZF6 and ZF506 l
通讯机构：
[Xiao, Weiwei] U;[Deng, Hua] C;Univ South China, Sch Mech Engn, Hengyang 421001, Hunan, Peoples R China.;CNNC Jianzhong Nucl Fuel Co, Yibin 644000, Sichuan, Peoples R China.
关键词：
Accident-tolerant fuel;Adhesion strength;Roughness of substrate;Sputtered TiN coating;Sputtering power
摘要：
TiN coatings have been deposited on Zr-4 substrates using direct current (DC) magnetron sputtering and the effects of roughness of substrate and sputtering power on the microstructure, thickness/deposition rate, adhesion properties and residual stress of coatings have been studied. The microstructures of the coatings were characterized by using scanning electron microscope (SEM) and X-ray diffractometer (XRD). The thicknesses of the coatings were detected by using SEM. The adhesion property was tested by using scratch testing. The residual stress was measured by using the XRD method. The results shown that the microstructure, thickness/deposition rate, adhesion properties and residual stress of coating are significantly influenced by the roughness of substrate and sputtering power. The roughness of substrate has significant influence on the surface micrograph of the coating but not obvious on the thickness/deposition rate. The microstructure, thickness/deposition rate is remarkably affected by the sputtering power. In addition, the adhesion property does not vary monotonically with the roughness of substrate and the sputtering power. The adhesion strength presents a trend of first rises and then declines with the increase of surface roughness of substrate and sputtering power. The residual stresses of the coating were compressive and the residual stress magnitude of the coatings deposited by relatively low sputtering power was higher than that deposited by relatively high sputtering power. (C) 2018 Elsevier B.V. All rights reserved.
作者机构：
[徐守龙; 邹树梁; 郭赞; 匡雅] School of Environmental and Safety Engineering, University of South China, Hengyang;421001, China;[黄有骏] Nuclear Power Institute of China, Chengdu;610200, China;[徐守龙; 邹树梁; 郭赞; 匡雅] 421001, China
通讯机构：
[Zou, S.-L.] S;School of Environmental and Safety Engineering, University of South China, Hengyang, China
通讯机构：
Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, University of South China, Hengyang, Hunan, China
作者机构：
[徐守龙; 邹树梁] Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, University of South China, Hengyang, 421001, China;[黄有骏] Nuclear Power Institute of China, Chengdu, 610213, China;[徐守龙] College of Nuclear Science and Technology, University of South China, Hengyang, 421001, China
通讯机构：
[Zou, S.-L.] H;Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, University of South China, Hengyang, China
摘要：
W-Ni-Fe-Hf series alloy with different Hf contents were prepared through liquid phase sintering. Influences of Hf on mechanical properties, shielding effect and microstructure of W-Ni-Fe-Hf alloy are analyzed and discussed by using SEM, XRD device, metalloscope, BH1326 gamma-ray shield tester and so on. The results of the study show that adding the microelement Hf could increase dispersity of powder effectively. Hf distributes in the binding phase ofW-Ni-Fe-Hf series alloy (percentage) as an intermediate phase. This intermediate phase not only could refine crystals, but also has good affinity to the microelement Hf, thus enabling to improve mechanical properties and shielding effect of the alloy. However, the intermediate phase formed by excessive Hf is easy to cause segregation on the interface between W crystal boundaries and Ni-Fe binding phase, which would weaken interface binding strength and thereby deteriorate mechanical properties of the alloy. (C) 2017 Elsevier B.V. All rights reserved.
作者机构：
[朱志超; 宋英明; 梁烨; 叶凯萱; 邹树梁; 颜佳伟; 张震宇; 张秋楠] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[王宁] Center of Information, Nuclear Power Institute of China, Chengdu, 610213, China
关键词：
核设施退役;辐射场重构;拆除路径优化;功能软件
摘要：
辐射场分布和路径选择是核设施退役过程中影响工作人员吸收剂量的主要因素。针对核设施退役过程中多源项的三维辐射场,采用点核积分的方法进行重构,重构结果与蒙特卡罗程序计算结果吻合很好,验证了点核积分法的可行性。将核退役拆除路径问题抽象为一种类旅行商问题数学模型,构造不同拆除路径下所受外照射剂量对应的剂量矩阵,根据辐射防护ALARA (As Low As Reasonably Achievable)原则,利用遗传算法进行寻优。对于多源项退役拆除实例,计算给出了最优化拆除路径和三维可视化显示,并对优化效果进行了讨论。设计开发了面向核设施退役过程的辐射场重构与拆除路径优化功能软件。
