CuW75合金电腐蚀性能的研究  

Investigation on Arc Corrosion Characteristics of CuW75 Alloy

作　　者：赵伟鹏[1] 肖鹏[1] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《西安理工大学学报》2013年第1期66-69,共4页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(51171147)

摘　　要：以CuW75合金为研究对象,对不同粒径W粉制备的CuW75合金进行真空电击穿实验,记录电击穿相关数据,并采用扫描电镜对试样的组织和击穿形貌进行观察分析。结果表明,与粗晶CuW75合金相比,细晶CuW75合金经电击穿测试后,电弧烧蚀程度更轻,耐电压强度增加了1.27×107V/m、截流值降低了0.33 A,且燃弧时间也延长了0.51 ms,表现了更明显的内电场影响效果和更优良的抗电腐蚀性能。With CuW75 alloy as the research object,vacuum electrical breakdown tests are performed on the surfaces of CuW75 Alloys,prepared by W powders of different particle sizes,and the data on vacuum electrical breakdown are recorded,and the microstructure and breakdown morphology of specimens are observed and analyzed using a scanning electron microscope（SEM）.The results show that the fine-grained CuW75 alloy has slighter arc corrosion degree,increases by 1.27×10^7 V/m on breakdown strength,decreases by 0.33A on chopping current and lengthens by 0.51ms on arc life as compared with the coarse-grained CuW75 alloy,cohereby displaying more obvious effect of internal electrical field and more excellent electrical resistance.

关 键 词：CuW75合金 真空电击穿 耐电压强度 击穿形貌 内电场 

分 类 号：TB331[一般工业技术—材料科学与工程] TG146[金属学及工艺—金属材料]