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简介：研究了振动加速度对1J22合金磁性能和微观组织的影响，以及表面镀TiN薄膜对1J22合金磁性能的影响。结果表明，合金磁性能随振动加速度的增大而减小；在以30g的最大加速度振动后，合金微观组织并无明显变化，其磁性能仍然符合国家标准要求；镀TiN薄膜可明显增大合金表面硬度，其由440Hv增至650Hv，但对磁性能影响较小。

简介：EarlyoneJanuarymorningIsatinamodernDaewoocoachofYunnanExpressasitpulledoutofKunming'sLongDistanceBusStation.IwasheadingtothewarmthofsouthernYunnan,toGejiu,capitalofHonghePrefecture.

简介：Afterformationsometinoredepositssufferedmoreorlesstransformingbylatergeologicalpro-ccsscs,sothattheyhaveshownthefeaturesofpolymetallo8enicepochs,polymetallogenic8tagcs,polymctal1izations,polygenicmatters,multifactorore-control8andpolmpetallogenictypesetc.andtheyhavetransformedintopo1ygeneticcompound

简介：Throughinterfacialpoly-condensationofR2SnCl2(R=Me,Bu)withvariousdiacids,diphenols(diols),diamines,amino-acids,hydroxyacids,urea,orthiourea,aseriesoforgano-tinpoly-esters,poly-ethers,poly-amines,poly-amine-esters,poly-ureas,poly-thioureaswereprepared,andcharacterisedaltogethertotalling100polymers,amongwhich91arepreviouslyunreported.ThesynthesizedpolymershaveapotentialasathermostabilizerinPVCproducts.

简介：国风塑业股份有限公司公司地址：合肥国家高新技术产业开发区天智路36号邮政编码：230088公司电话：0551—5329009

简介：Eightnovelcompoundshavebeensynthesizedandtheyaretwoseriesofmixedtri（butyl/cyclohexyl）tincarboxylates:BunCy3-nSnO2CR（n=1,2;R=n-C3H7,C6H5,4-ClC6H4,4-NO2C6H4）.InadditiontothestudiesoftheirstructureswithIR,119Snand13CNMR,wetestedtheirfungicidal,insec-ticidalandacaricidalactivities.Thepercentageofinhibitiontotheaforementionedphytopathogenisabout80—100%at50ppminglasshouseand100%forT.Uriticaeat500ppm.Thosefindingsindicatethatthiskindofcompoundshavebothfungicidalandacaricidalactivitiesandmayhaveagoodprospectforapplications.

简介：TheYinyanporphyrytindepositisablinddepositassociatedwithasmallgraniteporphyrystock.ThepetrologyandgeochemistryoftheYinyangraniteporphyrysuggestthatitisgeneticallyofthetransfor-mationtype,emplacedatthelatestageoffractionalcrystallizationwithinahigh-levelmagmachamber.Ore-formingfluidsarederivedpredominantlyfromthegraniticmagmaandtheyinteractwiththewallrocksintenselywhenfindingtheirwayupwardsthroughthegraniteporphyry.Fromthelowerpartoftheporphyryupwardsthefollowingalterationzonescanbedistinguished(a)slightlyalteredgraniteporphyry(withweakpotashfeldspathization),(b)protolithionite-quartzgreisenizationzone,(c)to-paz-quartzgreisenizationzone,(d)senicite-quartzsericitizationzone,and（e）silicificationzone(quartzcoreatthesurface).Tinmineralizationisrelatedtogreisenization,especiallytotopaz-quartzgreisenization.Rockandore-formingtemperaturesandoxygenfugacitiesareestimated,respectively.TherearesignificantdifferencesinmanyaspectsbetweentheYinyanporphyrytindepositandvolcan-ic-subvolcanicporphyrytindeposits.

简介：Titaniumnitride(TIN)filmsweredepositedonAISI304stainlesssteelsubstratesusinghollowcathodeplasmaphysicalvapordeposition(HC-PVD).TitaniumwasintroducedbyerodingtheTicathodenozzleandTiNwasformedinthepresenceofanitrogenplasmaexcitedbyradiofrequency(RF).Thesubstratebiasvoltagewasvariedfrom0to-300Vandtheuniformityinfilmthickness,surfaceroughness,crystalsize,microhardnessandwearresistanceforthefilmwithadiameterof20mmwasevaluated.Althoughthecentralzoneoftheplasmahadthehighestiondensity,thefilmthicknessdidnotvaryappreciablyacrossthesample.Theresultsfromatomicforcemicroscopy(AFM)revealedalowsurfaceroughnessdominatedbyanisland-likemorphologywithasimilarcrystalsizeontheentiresurface.Highermicrohardnesswasmeasuredatthecentralzoneofthesample.Thesampletreatedat-200Vhadexcellenttribologicalpropertiesanduniformity.

简介：Bis(β-alkoxycarbonylalkyl)tindichlorideswereinterfacialcondensedwithorganicdithio-alcoholstogiveaseriesofneworgano-tinpolymers.Experimentalparameterswerediscussed.Thepolymerssynthesizedweretestedfortheireffectontheheat-stabilizationofPVCresins.Theresultsareofinterestinthisareaofapplication.

简介：Nuclearbindingenergies,chargeradiiandthechargedistributionsofeven-eventin(Sn)isotopesarecalculatedusingrelativisticmeanfieldtheory,andthetheoreticalresultsarefoundtobeinaccordancewiththeexperimentaldata.ThenuclearchargeformfactorsforSnisotopesarecalculatedusingthephase-shiftanalysismethod.ItisshownthattheminimaofthechargeformfactorsshiftupwardandinwardwithanincreaseintheneutronnumberoftheSnisotopes.

简介：不规则三角网是一种有效表示数字高程模型的方法，它在减少数据冗余、表达复杂地形特征方面具有很强的优越性，在实际工作中得到了广泛应用，本文讨论在VC下实现不规则三角网自动连接的方法。

简介：Thevacuumdiffusionbondingoftitaniumalloytotin-bronzehasbeenstudiedandthefeasibilityandappropriateprocessingparametershavebeeninvestigated.Themaximumtensilestrengthofthejointsis168MPa,andafirmjointisobtained.ThemicrostructureofdiffusionbondedjointhasbeenobservedbySEM.X-rayandEPMA,andthemainfactorsaffectingdiffusionbondinghavebeenanalyzed.TheintermetalliccompoundsTi2CuandTiCuwereformedneartheinterface.Thewidthandquantityoftheintermetalliccompoundincreaseswiththeincreaseofthebondingtime.Theformationoftheintermetalliccompoundsresultsinembrittlementofthejointandthepoorjointproperties.

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简介：摘要硬质TiC、TiN、Ti(CN)薄膜因具有相似的性质，故合称为TiN类薄膜。TiN类薄膜因具有高强度、高硬度、化学稳定性好、耐磨及防腐蚀等一系列优点，其涂层被广泛作用于机械工业中的刀具、模具等表面，成为具有巨大应用前景的涂层材料。TiN类陶瓷膜由于其独特的性能而成为当前材料表面研究热点之一。文章简要介绍了利用化学气相沉积(CVD)、物理气相沉积(PVD)、双辉技术及其它表面处理技术制备TiN类膜的研究进展，讨论了各种制备方法的工艺特点。

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简介：Laserbeamweldingisanewtechniqueforthefoodcanmaking.Thisresearchstudiedtheweldingtechnologyandparametersforthetin-platecanandtheirinfluencesonweldingspeedandquality,investigatedthemicrostructureandpropertiesoftheweld,analyseddistributionoftinintheweldmetalandcarriedouttheflangingtestofthecanbody.Theresultsshowthatlaserweld-ingofthecanbodyischaracterizedbyhighweldingspeed,fineappearance,goodqualityandstableandreliableprocess.Thistechnologycanfulfillthere-quirementsofcanmaking.

简介：在这研究，听电影的二种类型被准备，一使用用多弧离子小块地(MAIP)的有一个在里面飞机S过滤器的过滤cathodic弧血浆(大页书写纸)技术，和其它，和两个在一样的参数下面扔了。质地，坚硬，粗糙，tribological和听电影的二种类型的电气化学的腐蚀行为的比较被给。FCAP技术获得的听电影被发现高度一致、光滑、macroparticle免费。听电影由有的大页书写纸扔了一(111)比较喜欢取向，当有时，在这些电影的质地都没由MAIP扔。在低负担下面，二种听涂层有很不同穿机制；有的大页书写纸的电影一更低与MAIP技术扔的听电影相比穿率和磨擦系数。大页书写纸的听电影的稠密、没有洞的结构能有效地在腐蚀测试期间从底层避免听电影的雪崩。

简介：ThesegregationandinteractionofREM,phosphorusandtinongrainboundariesofα-FewereinvestigatedbyAugerspectrometryandSEM.TheresultsshowthatREM,PandSntendtosegregateongrainboundariesofα-Fe.AddingREMintoFe-SnalloywithlowS,PcontentscouldsuppressthesegregationofSnongrainboundaries.ThesegregationofSnwoulddecreasewithincreasingofREM.InFe-Sn-PalloyPwouldsuppressthesegregationofSn.ThesegregationofPwouldbesuppressedbysegregationofREM.ThetrendofPsegre-gationdecreaseswithincreasingofREM.WithincreasingofREMthesegregationofSnatfirstisloweredbutthenfollowedwithanincreasing.AddingREMintoFe-SnandFe-Sn-Palloyscouldsuppressintercrystallinefractureofα-Featlowtemperatures.