直流负载条件下Cu-Cr-Zr-Ag合金的电侵蚀特性-论文.pdf

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1、2014年5月贵金属May2014第35卷第2期PreciousMetalsVo1．35，No．2ElectricalErosionCharacteristicsofCu--Cr-Zr-AgAlloyContactunderDCLoadWANGSong，CHENYongtai，ZHANGJiming，WANGSaibei，LIUManmen，YANGYunfeng，XIEMing(StateKeyLaboratoryofAdvancedTechnologiesforComprehensiveUtilizationofPlatinumMetals，KunmingInstituteof

2、PreciousMetals，Kunming650106，China)Abstract：TheanalysisofelectricalerosioncharacteristicsofcontactsunderDCloadisconducivetothein—depthstudyoftheelectricalerosionmechanism．TheelectricalexperimentsontheelectricalerosionstatusoftheCu—Cr-Zr-AgalloycontactsunderDCloadof25V／15Aandtheelectricalerosio

3、nmechanismwerecarriedoutbyelectricalcontacttestmachineandSEM．Thesurfacemicromorphologies．microstructuresandmaterialtransferphenomenonofthecontactswerestudiedinthisPaDeLTheresultsshowedthattheCu．Cr-Zr-Agcontactshaveexcellentanti—weldingproperties．Theelectricalerosionsurfacesofthematerialshoweda

4、1argenumberofpaste—likecoagulumandbubbles．Therearesomemicro．cracksexistingonthesurfaceoftheCu—Cr=Zr—Agalloycontacts．TheobviousmaterialtransferphenomenonoccursbetweenthemovableandstaticcontactsunderDCload．Keywords：metalmaterial；Cu—Cr-Zr-Agalloy；DCload；electricalerosion；microtophographyCIFnumber

5、：TG146．32Documentcode：AArticleID：1004．0676(2014)02—0001—05直流负载条件下Cu-Cr-Zr-Ag合金的电侵蚀特性王松，陈永泰，张吉明，王塞北，刘满门，杨云峰，谢明(昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室，昆明650106)摘要：直流负载下触头的电侵蚀特性分析有助于深入研究其电弧侵蚀机理。通过对Cu—Cr-Zr-Ag合金触头进行电性能实验，研究了25V／15A直流负载条件下，合金触头的电侵蚀情况。采用电接触试验机和扫描电镜，研究了合金材料的电弧侵蚀机理，表面形貌，微观结构和材料转移现象。结果表明：Cu-Cr-Zr-

6、Ag合金触头具有优异的抗熔焊性能，合金触头的电弧侵蚀微观形貌表现为浆糊状凝固物和气泡，且在触头侵蚀表面存在微裂纹。直流负载条件下动静触头间会发生明显的材料转移现象。关键词：金属材料；Cu。Cr-Zr-Ag合金；直流负载；电侵蚀；微观形貌Coppersystemalloysareconsideredasanewerosionphenolmenonofcoppersystemalloycontactstypeofprospectivecopperalloywithexcellentissignificanttoimprovetheirservicelifeandconductivity

7、,highstrengthandgoodanti—electricalreliability[9_l．Inrecentyears．manyresearchershaveerosionproperties，whichiswidelyusedinelectricalbeeninterestedinthestudyofarcerosion，surfacecontactsandwires[1．8】．Thestudyontheelectricmorphologies，micro