基于二元堆积理论高致密CuW复合材料制备及耐电弧侵蚀性能研究  

Preparation and Arc Erosion Resistance of High Density CuW Composites Based on Binary Packing Theory

作　　者：张懿铭 宋克兴[1,2] 国秀花 皇涛[1] 冯江[1] 王旭[1] 李韶林[1] 钟建英[3] 李凯 ZHANG Yiming;SONG Kexing;GUO Xiuhua;HUANG Tao;FENG Jiang;WANG Xu;LI Shaolin;ZHONG Jianying;LI Kai(Key Laboratory of Nonferrous Metal Materials Science and Processing Technology of Henan Province,Henan University of Science and Technology,Henan Luoyang 471023,China;Henan Provincial Academy of Sciences,Zhengzhou 450052,China;Pinggao Group Co.,Ltd.,Henan Pingdingshan 467000,China)

机构地区：[1]河南科技大学河南省有色金属材料科学与加工技术重点实验室,河南洛阳471023 [2]河南省科学院,郑州450052 [3]平高集团有限公司,河南平顶山467000

出　　处：《表面技术》2024年第14期181-189,共9页Surface Technology

基　　金：河南省科技研发计划联合基金(225200810052)。

摘　　要：目的提高CuW复合材料的致密度及耐电弧侵蚀性能。方法基于二元堆积理论设计并制备了双粒径W颗粒混杂CuW75复合材料,通过微观组织表征、硬度测试、导电率测试及密度测试,重点对比研究了单粒径CuW75复合材料和双粒径混杂CuW75复合材料致密性和微观组织的内在关联,并通过电接触实验研究了双粒径混杂CuW75复合材料耐电弧的侵蚀性能。结果双粒径混杂CuW75复合材料微观组织均匀,W相及Cu相网络连通程度高,致密度高达99.79%,较CuW75复合材料国家标准致密度提升了2.9%,硬度较CuW75复合材料国家标准提升了6.7%。电接触实验结果表明,双粒径混杂CuW75复合材料熔焊力波动幅度小,平均熔焊力(35.06cN)较1μm单粒径CuW75复合材料的降低了11%;平均燃弧能量(147.29mJ)及平均燃弧时间(2.53ms)较1μm单粒径CuW75复合材料的分别下降了38%和36%。双粒径混杂CuW75复合材料受电弧侵蚀面积小,侵蚀坑较浅,耐电弧侵蚀性能优异。结论双粒径混杂W颗粒制备CuW复合材料可以明显提升材料的致密度及微观结构连通性。双粒径混杂CuW复合材料可以更好地分散电弧,具有优异的抗熔焊性能及耐电弧侵蚀性能。With the rapid development of high voltage switch and military industry,higher requirements are put forward for the arc erosion resistance of CuW composites.The density is a key factor affecting the arc erosion resistance of CuW composites.To further improve the density of CuW composites,double-particle-size hybrid CuW composites were designed based on the binary packing theory.Single-particle size CuW75 composites and double-particle size hybrid CuW composites were prepared by rapid hot-pressing sintering and infiltration process.The microstructure of CuW75 composites was characterized by JSM-IT100 tungsten filament scanning electron microscopy.The density of CuW75 composites was tested by New Classic MF density meter.The hardness of CuW75 composites was tested by 320HBS-3000 digital display Brinell hardness tester(loading 250 kg,loading time 30 s).The electrical conductivity of CuW75 composites was tested by Signma2008B1 digital conductivity meter.The intrinsic relationship between the density and microstructure of both single-particle CuW75 composites and double-particle size hybrid CuW composites were studied,and the arc erosion resistance of double-particle-size hybrid CuW composites was carried out on the JF04C electrical contact test system.The results showed that the microstructure of the double-particle size hybrid CuW composites was uniform,which effectively reduced the aggregation of W phase and Cu phase and improved the network connectivity of W phase and Cu phase.The density was 99.79%,which was 3.4%and 1.19%higher than that of CuW75 composites with single-particle size of 1μm and 20μm.It was 2.9%higher than the national standard of CuW75 composites,and the hardness was 6.7%higher than the national standard of CuW75 composites.The electrical contact process was divided into two steps:closure and disconnection.When the cathode and anode changed from the closed state to the disconnected state,the contact area of the cathode and anode became smaller,the resistance increased,and the formed Joule heat c

关 键 词：二元堆积理论 双粒径混杂 CuW复合材料 熔焊力 微观组织 

分 类 号：TB331[一般工业技术—材料科学与工程]