简介：ElectrodeENiFe-Cland￡"4303wereselectedtojointhecementedcarbideWC-2QCoandcarbonsteel45byshieldedmetalarcweldingprocess.Microstructureandbendingpropertyofthecorrespondingjointswereanalyzed.Theresultsshowedthatthecarbonsteelelectrode￡"4303hadnopropermetallurgyconditionforthearcweldingofcementedcarbideandcarbonsteel.TheCandNicontentofthecastironelectrodeENiFe-Clcouldmeettheconditionofpreventingtheformationof7]carbide,whichwassuittothearcweldingofcementedcarbideandcarbonsteel,buttheoperationparametersneededtobeoptimizedtominimizetheslaginclusion.ThealloyWC-2QCowhichdidnotfitforcoldarcwelding,byadoptingthemeasureofbeingpreheatedat723K/or1hbeforewelding,andbeingkeptat723Kfor3hafterweldingthenfollowedfurnacecoolingcouldavoidthehappeningofcrackintheWC-20C〇basemetal.

简介：Tandemgasmetalarcwelding(T-GMAW)processshowsahighdepositionratethatuptothreetimesofthesingleelectrodeGMAW,sotheweldingspeedcouldbesignificantlyincreasedinthisprocess.However,themajorityofthisprocessapplicationsarebasedonthepre-programmedroboticwelding,whichdoesnotallowthemtotracktheseamreal-timeduringwelding.Rotatingarcsensor,sensingtheseampositionbydetectingthechangingofweldingcurrents,hasbeenwidelyadoptedintheautomaticrobotweldingprocess.Itisproposedinthispapertointegratetherotatingarcsensorwithatrailingtorchtodevelopanewapproachofrotatingarcleadtandemgasmetalarcwelding(RLT-GMAW)process.Thecharacteristicsoftheweldingcurrentsintheproposednewweldingprocesswerefirstlystudied,andthenaself-turningfuzzycontrolseamtrackingstrategywasdevelopedforthemobilerobotautomaticwelding.TheexperimentalresultsshowedthattheproposedRLT-GMAWprocesshadanexcellentseamtrackingperformanceandhighweldingdepositionrate.Evenifthereweresomeelectromagneticinteractionsbetweenthetwoarcs,thedeviationoftheweldingseamcouldalsobereflectedbythefluctuationoftheweldingcurrentsontheleadingarconcethecorrectweldingparameterswereselected.Basedonthedetecteddeviation,theweldingtrackingexperimentsshowedthattheproposedself-turningfuzzycontrollerhadagoodperformancefortheRLT-GMAWprocessseamtracking.

简介：Weaddresstheroleoftheconcaveandconvexarcs(asobservedfromthesubductingplate)onthedeformationoccurringalongtheMyanmar-Andaman-Sumatramargin.Wecategorizethepre-andpost-seismicdeformationsofthelithosphereusingearthquakedatabaseoccurringeitherpriorto26thDecember2004M_w9.3off-Sumatramega-eventoraftertheincidence.Analysisunderpre-seismicdomainshowsthatareanearSumatrarecordshighestseismicity,whichlargelydropsintheareapasttheNorthAndaman,andfurtherincreasestowardsnorth.Shallowestdepthandminimumdipofthesubductinglithosphereisrecordedatthecentralsegmentwherethearctransformedintoconcaveshape.TheannualmomentenergyreleaseduringearthquakedecreasestomorethantwoordersofmagnitudepasttheNorthAndamantowardsnorthunderpost-seismicdeformationphase.HigherdepthsofcontinuityofeventsarepresumablyassociatedwithmoredippingBenioffzonesinboththeIndo-MyanmarandAndaman-Nicobarconvexarcs.Theseobservationsobviouslyaccountfortectonicsubdivisionofthemarginnearconcaveshapearcaroundthecentralpart.Absenceofvolcanism,presenceofsplayfaultsintheback-arc,sharpreductioninseismicitynearcentralsegmentareinterpretedtobecausedbymajortectonicimpactoftheNNE-wardconvergingbuoyantNinety-eastRidgeagainsttheAsianPlate.Shallowestdip,smallelasticthickness,weakconvergingIndianlithosphere,andevidencesofseriesofen-echelonblocksofftheeasternsideofthebrokennorthernNinetyeastRidgemightbeincapableofgeneratinggreatearthquakeinthisarea.

简介：摘要论述了渔光互补光伏发电主接地选材（镀锌钢、ARC-W合金、覆铜钢、纯铜）的腐蚀性能和导通性能等综合性能对比，通过项目应用实例，得出综合技术经济比较。

简介：微弧的氧化(毛)/zinc硬脂酸盐(ZnSA)合成涂层经由毛与superhydrophobicZnSA的电极淀积处理并且随后的封上被制作。表面形态学，化学作文和涂层的腐蚀抵抗用扫描电子显微镜学的地排放被调查，Fourier变换红外线，X光检查衍射并且电气化学并且氢进化大小。结果显示毛涂层被下列superhydrophobicZnSA涂层高效地封上。MAO/ZnSA合成涂层显著地由于它的superhydrophobic功能提高了Mg合金Mg-4Li-1Ca的腐蚀抵抗。另外，腐蚀机制为合成涂层被建议并且讨论。

简介：Inthisstudy，theweldingthermalcyclecurveexhibitedtwotemperaturepeaksinhighheat-inputtwin-wireseparate-poolsubmerged-arcweldingandcoarse-grainedheataffectedzoneexistedintheweldedjoint.Theinclusionsofprimaryweldmetalandcoarse-grainedheataffectedzoneofCe-addedSAWshouldbeAl203,MnO,Si02,TiO,Ce2S3,CeS,Ce202SandCe203.Undertheeffectofweldingthermalcycle,oxy-sulfidesinclusionsofCe,thediameterofwhichwaslessthan2.0|Jim,slightlygrewlarger,butthecompositionandtypeoftheinclusionsdidn，tchange.ThemicrostructureofthelargeheatinputweldmetalhadacicularferritethatCeoxidesulphideparticlesinducednucleationandproeutectoidferrite.Inthecoarse-grainedheataffectedzoneofweldmetal,home-positionprecipitationofacicularferriteandsympatheticacicularferritewerebothobserved.Itwassupposedthatpreviouscrystalcellsofacicularferriteinaustenitegrainpromotedhome-positionprecipitationofacicularferrite.Meanwhile,sympatheticacicularferritetendedtonucleateattheprimaryacicularferritegrainboundaries,wherehighdislocationdensitywaslocated,andgrewinsidetheneighboringcarbon-depletedausteniticregions.Thegranularbainitenucleatedintheausteniticzonewithhighcarboncontentclosetoacicularferriteandsympatheticacicularferrite.

简介：TheNeotethysplaysanimportantroleinshapingtheGangdesemagmaticbelt,southernTibet.However,theinitialtimeofspreadingandsubductionoftheNeotethysremainscontentious.Inthisstudy,asuiteoflateTriassiccumulatehornblendegabbrowasidentifiedinthesouthernmarginoftheGangdesemagmaticbelt.Thegabbroexhibitscumulatestructure,withhornblendeandplagioclaseastheprimarymineralphases.Isotopicdataindicateahydrousmagmasourcederivedfromadepletedmantlewedgethathasbeenmodifiedbyslabdehydration.Geochemicaldiscriminationssuggestthatthegabbrowasformedinanintraoceanicarcsetting,withcrystallizationagesofca.220-213Ma.Hornblende,hornblendelagioclaseandilmenitethermometersrevealthatthecrystallizationtemperatureof900-750°Cforthegabbro.Hornblendeandhornblende-plagioclasegeobarometersyieldanemplacementdepthatca.14.5-19.5km.ThisgabbroconstitutesalineofevidenceforanintraoceanicarcmagmatismthatiscoevalwiththecounterpartsinthesouthernTurkey,revealinganintraoceanicsubductionsystemwithintheNeotethysfromwesttoeastintheLateTriassicandthattheoceanizationoftheNeotethyswasmuchearlierthanpreviousexpectation.

简介：与扔的ZnOnanoparticles用擦亮方面的弧形纤维在1550nm区域操作的双波长的纤维激光被建议并且示威。擦亮弧的纤维被使用一份硅碳化物报纸在擦亮常规单个模式的纤维的一个方面的一条简单却新奇的途径制作。有一段2.25公里和0.95dB的插入损失的擦亮弧的纤维被落下演员组方法与ZnO获得并且扔nanoparticles。分别地，稳定的双波长的产量在9.3和10.1dBm的山峰力量在1562.5和1563.4nm被获得以及28.4dB的signal-to-noise比率和0.9nm的隧道间距。两放射激光的波长也有狭窄的线宽在到在测试继续上的没有波长或力量变化的0.045和0.049nm和表演很少之间。