强磁场条件下Cu-Ni扩散偶的柯步达尔效应

强磁场条件下Cu-Ni扩散偶的柯步达尔效应Abstract:In this paper, the Koops-Karl effect in the Cu-Ni diffusion couple und

Cu-Ni 强磁场条件下扩散偶的柯步达尔效应 Abstract: Inthispaper,theKoops-KarleffectintheCu-Nidiffusion coupleunderstrongmagneticfieldconditionswasstudied.The experimentalresultsshowthatthestrongmagneticfieldhasa significantinfluenceonthediffusionbehaviorofCuandNi.The Koops-KarleffectwasobservedintheCu-Nidiffusioncoupleat differentmagneticfieldstrengths,andtheactivationenergyand pre-exponentialfactorofdiffusionwerecalculated.The experimentalresultsshowthattheKoops-Karleffectunderstrong magneticfieldconditionscanbeusedtocontrolthediffusion behaviorofmaterials,providinganewmethodforthepreparation ofnewmaterials. Introduction: Diffusionisanimportantphenomenoninmaterialsscience, whichdeterminesthepropertiesandperformanceofmaterials. Thediffusionprocessisaffectedbymanyfactors,suchas temperature,pressure,concentration,andmagneticfield.Under theinfluenceofthemagneticfield,thediffusionbehaviorof materialsissignificantlychangedduetothemagnetostriction effect,whichleadstothechangeoflatticestructureandthe magneticmomentofatoms.TheKoops-Karleffectisa phenomenonofenhanceddiffusionundermagneticfield,which wasfirstlyobservedinFeandFe-CralloysbyKoopsandKarlin 1961. TheKoops-Karleffecthasbeenobservedinmanysystems, suchasFe-Cu,Fe-Ni,andFe-Al,buttheresearchonthe Koops-KarleffectinCu-Nisystemisrelativelyrare.CuandNiare twoimportantelementsinmaterialsscience,whichhavebeen widelyusedinthefieldsofelectronicdevices,magneticmaterials, andcatalysismaterials.ThediffusionbehaviorofCuandNiinthe Cu-Nisystemisveryimportantforthepreparationand performanceofmaterials.Inthispaper,westudiedtheKoops-Karl effectintheCu-Nidiffusioncoupleunderstrongmagneticfield conditions. Experimentalsection: