简介:Manyapplicationsofultrasonic-assistedmethodswereusedduringmetalsolidification,buttheycouldnotbeintroducedintoweldpool.Inthispaper,awayofultrasonicassistedTIGweldingisintroduced.Bydirectlyimposedultrasonicvibrationonweldingarc,thevibrationinteractswitharcplasmaandpassestotheweldpool.Measurementresultsshowthatarcpressureissignificantlyincreasedwiththeultrasonicvibrationandthearcpressuredistributionmodelsarechanged.Bead-on-plateweldingtestsonSUS304confirmthatthistechnologycaninfluencethestyleofmetalmeltingandincreaseweldpenetrationdepth.
简介:Theapplicationofmicrowavetechniqueinthehydrometallurgyofnickellateriteoreswasdescribed.Themixtureofnickellateriteoresandsulfuricacidwaspre-treatedbymicrowaveirradiation.Thedissolvingofnickelwasconductedinhotwaterattheatmosphericpressure.Theeffectsoffactors,suchasmicrowavepower,microwaveirradiationtime,andsulfuricaciddosage,wereinvestigated.Inmicrowavefield,themigrationofionicspeciesand/orrotationofdipolarspeciespromotetheliquid?solidreactionprocessduetotheincreasedcontactareaofreactantsandleachingreactionrateconstant.Thankstothestrengtheningactionofmicrowave,themicrowave-assistedleachingprocesshasitsadvantages,suchashigherextractingratethanconventionalatmosphericleaching,andnoneedforhigh-pressureoperationashighpressureacidleaching(HPAL).Theferricironinleachingsolutioncouldbeeffectivelyremovedbysodiumjarositeprocesswithalittlelossofnickelinthejarositeprecipitate.
简介:InorganicbufferlayerssuchasSiO2orTiO2andtransparentconductiveindium-tin-oxide(ITO)filmswerepreparedonpolyethyleneterephthalate(PET)substratesbyionassisteddeposition(IAD)atroomtemperature,andtheeffectsofSiO2andTiO2onthebendingresistanceperformanceofflexibleITOfilmswereinvestigated.TheresultsshowthatITOfilmswithSiO2orTiO2bufferlayerhavebetterresistancestabilitiescomparedtooneswithoutthebufferlayerwhentheITOfilmsareinwardsbentatabendingradiusmorethan1.2cmandwhentheITOfilmsareoutwardsbentatabendingradiusfrom0.8cmto1.2cm.ITOfilmswithSiO2bufferlayerhavebetterresistancestabilitiescomparedtooneswithTiO2bufferlayeraftertheITOfilmsarebentseveralhundredsofcyclesatthesamebendingradius,fortheadhesionofSiO2isstrongerthanthatofTiO2.ThecompressivestressresultedfrominwardbendingleadstotheformationofmoredefectsintheITOfilmscomparedwiththetensilestressarisingfromoutwardbending.SiO2andTiO2bufferlayerscaneffectivelyimprovethecrystallinityofITOfilmsin(400),(440)directions.