简介：Imagesensorhasbeenoneofthekeytechnologiesinintellectualizedroboticswelding.Edgedetectionplaysanimportantrolewhenthevisiontechnologyisappliedinintellectualizedweldingroboticstechnologies.Thereareallkindsofnoisesinweldingenvironment.Thealgorithmsincommonusecannotbeappliedtotherecognitionofweldingenvironmentdirectly.Theedgeofimagescanbefellintofourtypes.Theweldimagesareclassifiedbythecharacteristicofweldingenvironmentinthispaper.Thispaperanalyzessomealgorithmsofedgedetectionaccordingtothecharacterofweldingimage,somerelativeadvantagesanddisadvantagesarepointedoutwhenthesealgorithmsareusedinthisfield,andsomesuggestionsaregiven.Thefeatureextractionofweldseamandweldpoolaretwotypicalproblemsintherealizationofintellectualizedwelding.Theiredgefeaturesareextractedandtheresultsshowtheapplicabilityofdifferentedgedetectors.Thetradeoffbetweenprecisionandcalculatedtimeisalsoconsideredfordifferentapplication.

简介：Theprocessesreportedforthepreparationoflanthanumhexaboride(LaB6)fromlanthanumoxideinvolvetheuseofcarboneitherelementalorintheformofboroncarbideorelementalboronitselfasreducingagents,fusedsaltsathightemperaturesorreactionswhichrequiretheproductboridetobeleachedout.Eachofthesetechniqueseitherincreasestheprocesscostsand/orincreaseschancesofcontaminationinfi-nalproduct.PureLaB6canbestbepreparedbyareactionwhichproducesagaseousbyprodu...

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简介：Usingtheexperimentalresultsgiveninliteraturesaboutthecontactangle,θandtheworkofadhesion,W,fornonreactiveliquidmetal/solidUO2systems,thevalidityandfeasibilityofthedifferentexistingmodelsforcalculatingWinthemetal/ox-idesystemsarediscussed.Itcanbeshownthatthemodelsassumingthatonlymetalatom-oxygenioninteractionsexistingattheinterfacesareunabletoexplaintheexperimentalresultsforW.Morereasonablemodelshouldtakeintoaccountbothmetalatom-oxygenionandmetalatom-oxidemetalcationinteractions,theproportionofthelatterisbalancedbythestoichiometryoftheoxide.Byapplyingthemodelrecentlysetupbytheauthorsforbinaryalloy/oxidesystems,onecanusetheexperimentalandcalculatedvaluesofθandWforvariousmetal/UO2systemstopredicttheinfluenceofmetallicadditionsonthecontactangleandtheworkofadhesionofagivenmetal/UO2system.

简介：在长期的rheological砍有半固体合金的实验，粒子变粗将窜改试验性的结果的解释。变粗被shear加强导致的传送对流和粒子的吝啬的尺寸在实验期间显著地被改变。一个简单模型被建立了它考虑传送对流的影响。产生生长法律被简化了因为散开和传送对流统治了生长。生长法律被验证与砍在有A356和听铅合金的一个Searl电流计的实验。实验证明在传送对流下面，生长跟随一条线性时间法律并且率常数取决于shear率的根。试验性的结果的修正被表明获得真粘性功能为一shear跳有A356的实验。

简介：Theobjectiveofthisresearchistopreparespeciallydesignedsurfacetextureonhardsteelsurfacebyelectrochemicalmicromachining(EM)andtoincorporateelectrolessplatedAg/MoS2solidlubricantcoatingintothedimplesofEMtexturedsteelsurfacetoeffectivelyreducefrictionandwearofsteel-steelcontacts.ThefrictionandwearbehavioroftheAg/MoS2solidlubricantcoatingonEMtexturedsteelsurfacewasevaluatedinrelationtothesizeandspacingofthedimplesthereon.Themicrostructur...

简介：ThesolidsolubilityofCe、La、SmandNdinFeorNiatvarioustemperaturewasdeterminedbymeansofadiffusion-couplemethodwiththeaidofanelectronprobemicroanalyzer.Twomethods,namelyareamethodandwholerangemethod,wereproposedfordataprocessinginthepresentpaper.Theprincipleandre-latedproblemsintheexperimentaldeterminationofthesolidsolubilityofrare-earthelementsinFeorNibyuseoftheabovementionedmethodswerealsodiscussed.

简介：Theliquid-filmsolution-diffusionbondingofZCuBe2.5alloyswasconductedusingCu-basedalloypowders.Thetensilestrengthofthebondingtimedecreasesandtheinterfacemigrationvelocityincreasesbondingtime,thethicknessofdiffusionlayerincreaseswiththeincreaseoftemperaturegradient,andthistendencybecomesmoreremarkablewiththeprolongingofbondingtime.

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简介：用于有机化合物的抽取的稳固阶段的抽取(SPE)技术有创作力地在纸被用作无机的黄金的抽取。技术的二种类型被建议并且探索，也就是SPE和第四级的铵表面活化剂的liquidliquid抽取(LLE)[cetytrimethyl铵溴化物(CTMAB)，cetylpyridine溴化物(CPB)，本甲基dimethyldodecyl铵氯化物(BDMDAC)，并且dodecyltrimethyl铵氯化物(DTMAC)]。表面活化剂能与Au(CN)2到形式，离子的建筑群，和混合物能被反向阶段的结合的硅石胶化的SPE列提取。因此，SPE的一个新方法被建议与高选择，可靠性，和简洁的这些特征提取黄金。黄金的恢复率是超过98的试验性的结果表演?%，和稳固阶段的抽取列容易没被损坏，它能反复被使用。新方法能也从碱的氰化物答案被用作黄金的抽取过程。而且，纸也提出金抽取的一个新过程。

简介：GypsumcrystallizationalongwiththesimultaneousregenerationofKClwasinvestigatedbythereactionofCaCl2solutionwithK2SO4.WelldevelopedsheetstructuregypsumcrystalswereproducedwhenK2SO4solutionwasaddedintotheCaCl2solutionbyslowtitrationorinmultiplestagesover2-8hfollowedby2hequilibration.InordertoregenerateKClsolutionasconcentratedaspossible,K2SO4solidwasaddedintothegivenCaCl2solutioninsteadofK2SO4solution,obtaininggypsumcrystalswithalmostthesamequalitybymultistageadditionwith[SO42-]/[Ca2+]molarrationolargerthan0.8.However,impurityofK2SO4·CaSO4·H2OwasdetectedbyXRDandwasfurtherconfirmedbySEM-EDSintheproducedcrystalswhenthe[SO42-]/[Ca2+]ratioincreasedto1.1.ItisprovedthatappearanceofthedoublesulfateisattributedtotherelativelyhighconcentrationofK2SO4.So,itisessentialtoproperlycontrolthe[SO42-]/[Ca2+]ratioandmakesure[Ca2+]inexcesstosuppressthesolubilityofCaSO4evenattheexpenseoflowcalciumremovalrate.

简介：Basedonalargeamountofdissectionatweldedinterfaceandquantitativemicroscopicexaminationofweldedrate,thesuitablelimitgreyscalevaluewasdetermined,andtheweldedrateofsuperplasticsolid-stateweldinginterfaceofheterogeneoussteelwassystematicallystudiedbymeansofself-madeultrasonicC-scanningimaginginspectionsystem.Theexperimentalresultsshow:theweldedstateofsuperplasticsolid-stateweldinginterfaceofheterogeneoussteelcanbeconductedtobemoreaccurately,reliablyandquicklyinspectedbymeansofthissystem,andtheultrasonictestingresultsaregoodconsistentwithactualexaminationresultsoftheinterfacedefectivedistribution.Withintheextentofthesuitbleweldedrate,theweldedratein40Cr/T10Asuperplasticweldingprocesstestedbythissystemislinearwithitstensilestrengthofjoint.

简介：Theeffectsofisothermalholdingprocessonthemicrostructureevolutionofsemi-solid7075strengthaluminumalloyproducedbytherecrystallisationandpartialremelting(RAP)processwereinvestigated.Tensilemechanicalpropertiesofas-receivedandthixoformedalloysatroomtemperaturewereexamined.Theresultsshowthatthemicrostructureofas-receivedalloyexhibitsremarkableorientationalongthedeformationdirection.Withtheincreaseofisothermalholdingtime,thesolidparticlegrainsizecontinuouslyincreasesandthedegreeofspheroidizationalsoimproves.Coalescencemechanismisdominantwhenreheatedat595°CandOstwaldripeningmechanismisdominantwhenreheatedat615°Cinthesemi-solidstate.Alowercoarseningrateisobservedfor615°C(coarseningrateK=391μm3s-1)comparedwiththecoarseningratefor595°C(coarseningrateK=501μm3s-1).TheRAP7075aluminumalloycanbesuccessfullythixoformedandthefillingofcomponentsisgoodafterthixoforming.Thethixoformedcomponentsexhibitfavoritemechanicalproperties.

简介：CSIR-RCS的灵活性，与使过程凉下来的同时的空气激动人心的正式就职，在有高压力的联合死扔被在广告2024，6082和7075上执行的盘子的半固体rheocasting成功地表明做铝合金。张力的性质为在T6的铝合金调节的做的上述提及的rheocast被测量。结果证明张力的性质接近了或甚至在一些情况中超过了最小的说明。rheocast2024-T6的收益力量和延伸超过了最小的要求做处于T6条件的合金但是因为开始的合金的Mg内容在商业合金说明下面，最终的张力的力量仅仅完成了90%说明。rheocast6082-T6的力量超过了所有做合金T6力量目标但是延伸仅仅由于孔管理了36%要求的最小，由在好金属间化合的针的答案热处理，和存在期间的早期的融化在引起了最容易溶解。7075超过了的rheocast的收益力量要求的和最终的张力的力量也管理了97%说明；当延伸仅仅由于在解决方案热处理进程期间引起的早期的融化的孔也到达了46%最小的要求时。

简介：Thixoforging是半固体金属在高稳固的部分处理的一种类型(0.7

简介：扔的near-liquidus准备的6061件半固体铝合金化工物品借助于Gleeble-3500热机械的模拟器处于半固体状态被压缩。在在不同温度和紧张率的真压力和真紧张之间的关系与70%的变丑度被学习。微观结构在变丑过程期间被描绘。半固体合金的变丑机制和形成thixo性质被分析。结果证明同类并且6061Al合金由扔技术的near-liquidus生产了的半固体的非树突微观结构能与对与通过再热的最容易溶解的作文在球形附近的谷物和液体阶段镇静的形成thixo合适的微观结构被转变成半固体状态过程。变丑温度和紧张率显著地影响山峰压力而非稳定流动应力。到处于半固体状态的变丑的抵抗随变丑温度的增加和紧张率的减少减少。在稳定的thixotropic变丑舞台，thixotropic性质是一致的，并且主要变丑机制是在稳固的粒子和稳固的粒子的塑料变丑之间旋转或滑动。

简介：Duetothedisturbancesofspatters,dustsandstrongarclight,itisdifficulttodetectthemoltenpooledgeandtheweldlinelocationinCO2weldingprocesses.Themedianfilteringandself-multiplicationwasemployedtopreprocesstheimageoftheCO2weldinginordertodetecteffectivelytheedgeofmoltenpoolandthelocationofweldline.TheB-splinewaveletalgorithmhasbeeninvestigated,theinfluenceofdifferentscalesandthresholdsontheresultsoftheedgedetectionhavebeencomparedandanalyzed.TheexperimentalresultsshowthatbetterperformancetoextracttheedgeofthemoltenpoolandthelocationofweldlinecanbeobtainedbyusingtheB-splinewavelettransform.Theproposededgedetectionapproachcanbefurtherappliedtothecontrolofmoltendepthandtheseamtracking.

简介：Iridiumnanoparticles(IrNPs)andsubmicroparticles(IrSMPs)withdifferentshapesweresynthesizedandassembledonindiumthinoxide(ITO)andSisubstratesusingtwodifferentmethods:directsurfacegrowthanddrop-dryingassembly.TheobtainedIrNPsandIrSMPswerecharacterizedusingscanningelectronmicroscopy(SEM)andenergydispersivespectroscopy(EDS).TheIrSMPs(orIrNPs)withdisc-likeshapeandirregularshapeswereobtainedonITOsubstratebydirectsurfacegrowthmethodusingpolyvinylpy...

简介：AnewtypeofcomplexsolidsuperacidcatalystWO3-ZrO2-SO42-withanacidstrengthH0≤-16.04waspreparedbykneadingZr（OH）4oramorphousZrO2withtungsticacid（H2WO4）（W/Zr=0.15）,followedbyexposingthiscomplexhydroxidesto0.5tool/LH2SO4,calcininginairat700～800℃for3h.ThiscatalystpossessesbothstrongBronstedacidityandstrongLewisacidityexperimentallyshowedbyIRobservationofpyridineabsorbedonit.XPSandAEStechniqueswereemployedtoexaminethevalencestatesoftungsten,zirconium,sulfurandtheirinteractions.Thestructureofsulfurspecieswasstudiedbyinfraredspectroscopyandastructuremodelofactivesitewasproposedupontheseresults.

简介：模仿半固体金属形成要求建模半固体行为。然而，因为半固体行为是thixotropic并且取决于液体固体，如此的建模是困难的在材料以内的空间分发。以便更好理解并且当模特儿在微观结构和行为之间的关系，一个模型基于micromechanical，途径和homogenisation技术被介绍。这个模型是在一个纯viscoplastic框架建立说明弹性的一个以前的模型的扩展。确实，当半固体在快速的压缩下面被装载时，试验性的负担排水量信号在变丑的更早的阶段揭示有弹性类型的回答的存在。行为的这个有弹性的特征被归因于多孔的稳固的骨骼的反应由不可压缩的液体浸透了。好量的同意在elastic-viscoplastic之间被发现的A预言了反应和试验性的数据。更精确，在负担的负担排水量曲线，山峰负担和随后的秋天的强壮的起始的升起部分很好被捕获。机械反应上的稳固的部分的效果在对实验的质的同意。