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简介：Liquidseparationofmagmaisreferredtoakindofdiffcrentiationofmagmawhichtakesplaceinthecaseofthatmeltsareimmiscibleorlimitedlymiscibleeacliother.Itplaysanimportantroleintheform-ingofbasic,ultrabasicrocksandoredepositsrclatedtotho8ekindsofrocks.Butitisnotsurewhethcritmayoccurintheprocessoftheformingofin

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简介：非凡的世界，需要非凡的生活。想起《菊花香》中的名句“人心是四季．一路走来，经历如春夏秋冬的变换。如果没有轻松自在，岂非成了定格的空间，永恒的冰季。”我们不停地在世间追求完美，但忙碌之余，不要忘了享受应得的快乐。上帝看到人类忙碌．所以创进了黑夜与寒冬；诗人看到凡人桎梏，所以寄托了遐思与梦想，我看到美好在望，所以品味着TunastenTE。给自己成功，给自己轻松！

简介：Themechanicalandcorrosionperformanceoflowalloysteeltubulargoodsdependsonthemicrostructureobtainedasaresultofthecombinationofalloyingelementsandmanufacturingprocessparameters.Thebasicdesignphilosophyfortheselectionofthealloyingelementsisruledbythebalancebetweenthesteelcostandthematerialperformance.Followingthisapproachthealloyingsequenceforthemanufacturingoftubularcomponentsinoilcountrytubulargoods(OCTG)applicationisgenerallyMn,C,randMo,usedassubstitutionalelementsinatotaladdedweightconcentrationaround1%upto3%.OtherelementssuchasB,Ti,NbandVareappliedasstrengtheningmicroalloyingelementsformingfineprecipitates.AlackofexperienceisfoundrelatedtotheuseofTungsten(W)onOCTGapplications,althoughWisalsoasubstitutionalelementthatbelongstogroup6oftheperiodictabletogetherwithCrandMo.OntheotherhandWiswidelyaddedforsteelpipesworkinginhightemperatureservicessuchaspowerplantboilers,wherecreepresistanceisneeded.Itisalsoappliedfortoolsteelsenhancingthehardness,wearresistanceandcuttingperformance.TakenintoconsiderationthesimilaritybetweenCr,MoandWandtheapplicationswhereWhasbeenprovenitwasdecidedtoanalyzethefeasibilityofusingWasanalternativealloyingelementforsomeOCTGapplications.AnotherfactorthatdrivesthisstudyisthefactthatWcouldbeacosteffectivesubstituteofMo,dependingonthealloymarketprice.Thispaperisbasedonliteraturereviewandexperimentalactivitydoneonlaboratorysteelsinwhich0.1%Mowasreplacedby0.2%and0.4%W.Thedifferentfindingsinregardswithmanufacturingprocessconsiderations,materialperformanceandthepossibleuseofWalloyedsteelforOCTGapplicationsaresummarized.(1)OpposedtothesusceptibilityshownbylowcarbonwithhighCr-Wcontent,hotcracksarenotexpectedinmediumCsteels(0.2%-0.3%)withWadditionupto1%.(2)Microporosity-relateddefectscouldfo

简介：ThesurfacecompositionandelectronicstructureoftungstencarbidespreparedbydirectsynthesisandcarburizationofwhitetungsticacidwerestudiedwithX-rayphotoelectronspectros-copy.TheexperimentalresultsshowthatWO3andfreecarbonarepresentonthesurfaceofthecarbides.Forthehighsurfaceareatungstencarbidepreparedfromwhitetungsticacidalargeextentofoxygeninsertionintothecrystallatticewasobserved.MeasurementsofthebindingenergiesoftheW47/2,C1sandO1scorelevelsindicatethatchargetransferisfromtheWtotheCandOatoms,formingW5d-C2pandW5d-O2pbonding.ThecatalyticbehaviorofthetungstencarbidesinhydrocarbonconversionreactionsismentionedandcomparedwithPtcatalysts.

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简介：ＥｎｅｒｇｙＣｏｎｓｕｍｐｔｉｏｎｉｎＴｕｎｇｓｔｅｎＥｘｔｒａｃｔｉｖｅＭｅｔａｌｌｕｒｇｙＭｏｒｉＧ．ＡｎｄＰａｓｃｈｅｎＰ．（ＤｅｐａｒｔｒｎｅｎｔｏｆＮｏｎｆｅｒｒｏｕｓＭｅｔａｌｌｕｒｇｙ，ＵｎｉｖｅｒｓｕｙｏｆＬｅｏｂｅｎ，Ｆｒａｎｚ－Ｊ...

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

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

简介：为了加与桑树跳动观察中国草药的忿恨的临床的功效，在治疗脚跟疼痛粘住。

简介：樱红的醇酒，散发着十三世纪法国皇室的芬芳，一点檀唇，在熠熠华灯下绽放如玫瑰花蕾般高贵与华丽；纤指，从剔透的水晶间传来热度；隔着妙曼轻纱，是一双朦胧，放纵，灵彩四溢的美目。于是，有诱惑在周遭弥漫开来……极致的尊贵总在极致的美丽中，我们被光华夺走了神志，但目光转处，总有割舍不去的留恋，TungstenT3——你我的致命诱惑！

简介：Puretungsten（PW）andW-1wt%La2O3（WL10）werepreparedbypowdermetallurgicalroutefollowedbytheswaging+rollingprocess.Thelogarithmicstrainsare0,0.37,0.58,and0.98forWL10and0,0.58forPW.Heattreatmentswereperformedattemperaturesvariedfrom1,573to2,173Ktodeterminetherecrystallizationtemperature.Recrystallizationtemperaturesare1,973and2,173KforWL1（logarithmicstrainof0.37）andWL3（logarithmicstrainof0.98）,respectively.ButinthecaseofWL2（logarithmicstrainof0.58）,fullrecrystallizationisnotachievedattemperatureofabove2,173K.Furthermore,therecrystallizationtemperatureofPWwithlogarithmicstrainof0.58isatleast300KlowerthanthatoftheequivalentWL10sample.Moreover,theincreaseofrecrystallizationtemperatureinhibitsthestrengthdegradationofWL2:sampleslose4%and22%strengthwhenannealedat1,573and1,973Kcomparedwithroomtemperature（RT）sample.Finally,thetextureevolutionfortheswaged+rolledWL10issignificantlyrelatedtothedeformationdegree:thedominatedorientationis<001>forWL2while<110>forWL3.

简介：TungstenisenvisagedasoneofthemaincandidatematerialsfordivertorplateofITERandfuturefusionreactors.DuetoD-Treaction,PFMswouldsufferheliumirradiationfromplasmaadditionaltothehighheatloads.Heliumretentionandthermaldesorptionbehaviorarelargelyconcerned.

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.

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简介：高密度碳化钨nanorod数组被劈啪作响的磁控管(MS)在碳化钨nanorod数组电极上作为template.Electrocatalytic性质ofnitromethane电镀物品减小用铝格子膜(ALM)准备了被电气化学的方法调查，并且他们的电镀物品催化活性被接近到磅陪衬电极的。

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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.