简介:Theuseofmoreandmoreelectronproductsrequiresinteriorwoodproductstohavetheperformanceofelectromagneticshielding.Oneofthewaystorealizeitistointroducethechemicalplatingwhichhasalreadybeendevelopedinelectronindustryintowoodprocessing.Thepaperclarifiesthemechanismofelectrolesscopperandgoldplatinganditsapplicationtowood.Itemphasizesthedevelopmentandtechnologyofelectrolesscopperandgoldplatingonwood.Meanwhile,itpointsoutthatitishighlyfeasibletotakethistechnologyintoeffect.
简介:Anewmethodisdescribedfortheelectrolessdepositionofcopperontoglass.Commerciallyavailableglassslidewasmodifiedwithγ-aminopropyltrimethoxysilanetoformself-assembledmonolayer(SAM)onit.ThenitwasdippeddirectlyintoPdCl2solutioninsteadoftheconventionalSnCl2sensitizationfollowedbyPdCl2activation.ExperimentalresultsshowedthatthePd^2+ionsfromPdCl2solutionwerecoordinatedtotheaminogroupsontheglasssurfaceresultingintheformationofN-Pdcomplex.Inanelectrolesscopperbathcontaininaformaldehydereducingagent,theN-PdcomplexeswerereducedtoPd^0atoms,whichthenactedascatalystsandinitiatedthedepositionofcoppermetal.AlthoughthecopperdepositionrateonSAM-modifiedglasswasslowatthebeginning,itreachedtothatofconventionalmethodinabout5min.
简介:Theobjectiveofthisresearchistopreparespeciallydesignedsurfacetextureonhardsteelsurfacebyelectrochemicalmicromachining(EM)andtoincorporateelectrolessplatedAg/MoS2solidlubricantcoatingintothedimplesofEMtexturedsteelsurfacetoeffectivelyreducefrictionandwearofsteel-steelcontacts.ThefrictionandwearbehavioroftheAg/MoS2solidlubricantcoatingonEMtexturedsteelsurfacewasevaluatedinrelationtothesizeandspacingofthedimplesthereon.Themicrostructur...
简介:听,TiAlN,和TiAlSiN涂层在YT14切上被准备有CAIP(阴极弧离子plating)的工具表面,表面形态学和阶段与FESEM(地排放扫描电子显微镜学)被分析,并且XRD(X光检查衍射),分别地并且象3D那样的涂层参数出现微地形学,谷物尺寸,表面高度,层次,侧面高度,和力量光谱密度,等等,与AFM(原子力量显微镜)被测量。结果证明锡,TiAlN,和TiAlSiN涂层的阶段是锡,TiN+TiAlN,TiN+Si3N4+TiAlN,分别地,当时表面粗糙S分别地,锡,TiAlN,和TiAlSiN涂层的是75.3,98.9,和42.1nm并且粗糙深度S分别地,k是209,389,和54nm平均谷物尺寸的顺序是TiAlN>锡>TiAlSiN。忍受索引S分别地,锡,TiAlN,和TiAlSiN涂层的双性人是0.884,1.01,和0.37,忍受能力的表面的顺序是TiAlN>锡>TiAlSiN。在更低的波长(102-103nm),力量光谱密度有锡的某个关联,和顺序>TiAlN>TiAlSiN,当关联在更高的波长是低的时(>103nm)。
简介:摘要研究了从红土镍矿中直接湿法提取金属镍,分别考察了酸度、浸出时间对镍浸出率和酸耗的影响,获得本试验的最佳工艺条件。在此条件下,镍浸出率为74%,硫酸酸耗在80吨硫酸/吨镍左右。本工艺设备易得,操作过程简单,具有较好的产业化前景。
简介:Adirectelectrolesscopper(Cu)coatingontungstenpowdersmethodrequiringnosurfacetreatmentorstabilizingagentandusingglyoxylicacid(C2H2O3)asareducingagentwasreported.TheeffectsofcoppersulfateconcentrationandthepHoftheplatingsolutiononthepropertiesofthepreparedW@Cucompositepowderswereassessed.ThecontentofCuinthecompositepowderswascontrolledbyadjustingtheconcentrationofcoppersulfateintheelectrolessplatingsolution.Auniform,dense,andconsistentCucoatingwasobtainedundertheestablishedoptimumconditions(flowrateofC2H2O3=5.01mL/min,solutionpH=12.25andreactiontemperature45.35℃)byusingcentralcompositedesignmethod.Inaddition,thecrystallineCucoatingwasevenlydispersedwithintheW@CucompositepowdersandCuelementinthecoatingexistedasCu0.TheformationmechanismfortheW@Cucompositepowdersbyelectrolessplatingintheabsenceofsurfacetreatmentandstabilizingagentwasalsoproposed.
简介:Objective:Thepurposeofthismeta-analysisistodeterminewhetherplatingorintramedullarynailing(IMN)foradultdiaphysealboth-boneforearmfractures(BBFF)providesbetterclinicaloutcomes.Methods:MEDLINE,EMBASE,GoogleScholarandTheCochraneLibrarywerecomprehensivelysearcheduntilJuly31,2016.BothretrospectivestudyandprospectivetrailsaboutcomparisonofdualIMNorhybridfixationversusdualplatingfixationinthetreatmentofadultdiaphysealBBFFwereincluded.UsingRevMan5.3software,dataoffunctionalrecovery,theuniontime,operatingtimeandcomplicationwasextractedformeta-analysis.Results:Thepooledanalysisshowedsimilarresultsintheuniontime,functionalrecoveryandtheratesofcomplications,butshowedasignificantdifferenceinoperatingtime.Conclusion:Thismeta-analysisdemonstratessimilarradiographicoutcomes,functionaloutcomesandcomplicationswithplatesorIMNusedinthetreatmentofadultdiaphysealBBFF.IMNfixationforthesefracturesseemstobeanalternativeandeffectivetreatmentwithshorteroperatingtimesandminimallyinvasive.