钨-镍合金涂层的制备工艺及屏蔽性能研究  

Study on Preparation Technology and Shielding Performance of W-Ni Alloy Coating

作　　者：陆海峰 王博 张泽群 邓春银 蒲立星 刘省勇[3] 张文利[3] LU Haifeng;WANG Bo;ZHANG Zequn;DENG Chunyin;PU Lixing;LIU Shengyong;ZHANG Wenli(Suzhou Nuclear Power Research Institute Co.,Ltd.,Suzhou 215004,China;Fujian Ningde Nuclear Power Co.,Ltd.,Ningde 355200,China;Daya Bay Nuclear Power Operation Management Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004 [2]福建宁德核电有限公司,福建宁德355200 [3]大亚湾核电运营管理有限责任公司,广东深圳518000

出　　处：《热加工工艺》2025年第2期53-58,共6页Hot Working Technology

基　　金：国防科工局核能开发项目(2021)。

摘　　要：针对核电站新型屏蔽材料的需求,采用高能等离子喷涂技术制备钨-镍合金涂层,对其微观形貌、成分分布、硬度及结合强度等性能进行分析,并通过理论计算和实际测试的方法对比研究钨-镍合金涂层和铅的屏蔽能力。结果表明,钨-镍合金涂层厚度为875μm左右,整体致密均匀,孔隙率仅为5.1%;涂层内无氧化及裂纹现象发生,平均硬度为523 HV0.3,结合强度达47.3 MPa。屏蔽能力对比分析结果显示,理论计算和实际测试结果相近,在同一厚度下钨-镍合金涂层对γ射线的屏蔽能力较铅更为优异,具有一定的应用前景。In view of the demand for new shielding materials of nuclear power plants,W-Ni alloy coating was prepared by high-energy plasma spraying technology.The micro-morphology,composition distribution,hardness,bonding strength and other properties were analyzed,and the shielding capabilities of W-Ni alloy coating and lead were compared through theoretical calculation and practical testing.The results show that the thickness of W-Ni alloy coating is about 875μm,the whole is dense and uniform,and the porosity is only 5.1%.There is no oxidation and crack in the coating,the average hardness is 523 HV0.3,and the bonding strength is 47.3 MPa.The comparative analysis results of the shielding capacity show that the theoretical calculation and actual test results are similar,and under the same thickness,the shielding ability of W-Ni alloy coating toγray is better than that of lead,which has certain application prospects.

关 键 词：等离子喷涂 钨-镍合金涂层 孔隙率 屏蔽能力 

分 类 号：TG174[金属学及工艺—金属表面处理] TG14[金属学及工艺—金属学]