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SamplePreparationTypically,titaniumandzirconiumsamplesarechemicallyetchedtoremovesurfacecontaminationwhenoxygenandnitrogenaredetermined.However,etchingcanintroducehydrogenintothesample.ASTMmethodE1409"DeterminationofOxygenandNitrogeninTitaniumandTitaniumAlloysbytheInertGasFusionTechnique",asupdatedin1996,permitseitheretchingorabrading(filing)ofthetestspecimen.ASTME1447"DeterminationofHydrogeninTitaniumandTitaniumAlloysbytheInertGasFusionThermalConductivity/InfraredDetectionMethod"permitssurfacepreparationbyabrading(ifnecessarytoremovecontamination).DifferencesinsamplepreparationpresentsomewhatofadilemmaregardingsimultaneousdeterminationofO,N,andHintitanium.However,abradingsampleswithafiletoremovesurfacecontaminationwillyieldaccurateO,N,andHresults.TheONH836utilizesahigh-powerelectrodefurnacetoquicklyandefficientlyreleasethetargetgasesfromwithinthesample,whichallowsforaveryrapidsimultaneousdeterminationofoxygen,nitrogen,andhydrogen.分析儀,就選上海禹重實(shí)業(yè)有限公司,用戶的信賴之選,有想法可以來(lái)我司咨詢!新疆專業(yè)元素分析儀采購(gòu)
SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.江蘇氧氮?dú)浞治鰞x廠家直銷上海禹重實(shí)業(yè)有限公司致力于提供分析儀,有需要可以聯(lián)系我司哦!
companyprofileShanghaiUzongIndustrialCo.,Ltd.(hereinafterreferredtoasUZONGLAB®)isahigh-techcompanythatprovidesintegratedsolutionsforintelligentlaboratories,mainlyservingtheChinesemarketandcountriesalongthe“BeltandRoad”.IthasthreebusinessdivisionsandoneThetechnologycenter,namelytheinstrumentbusinessdepartment,consumablesbusinessdepartment,projectdevelopmentdepartment,andZhongyuLianheTechnologyCenter.InadditiontotheShanghaiheadquarters,wehaveestablishedbranchesinBeijing,Shenyang,Shijiazhuang,Taiyuan,Qingdao,Guangzhou,ChengduandUrumqi.Toprovidecustomerswithmoreprofessional,saferandmoreconvenientproductsandservicesisoursolegoal.
SummaryThedeterminationoftheamountofoxygen,nitrogen,andhydrogeniniron,steel,nickel-,andcobalt-basealloysrepresentssomeofthemostimportantqualitymetricsforthesematerials.Oxygenisusedtocreatesteelfrompigironbyremovingexcesscarbon.Oxygencontentmustbecontrolledtolimittheamountofcarbonmonoxidethatcanbeformedduringsolidificationwhichmaycauseexcessiveporosity.Nitrogenisconsideredbothanimpurityaswellasanimportantalloyingagent.Itcanbepresentasanitrideorinterstitiallyinitsgaseousform.Increasednitrogencontentisknowntoincreaseyieldandtensilestrength,thusdecreasingductilityandformability.Excessivelevelsmayevolveduringsolidificationthusincreasingporosity.Highhydrogencontentistheprimarycauseofembrittlement,blisteringandflakingduetoitshighmobilitythroughthelatticeandprovidesnopotentialalloyingbenefits.TheONH836utilizesahigh-powerelectrodefurnacetoquicklyandefficientlyreleasethetargetgasesfromwithinthesample,whichallowsforaveryrapidsimultaneousdeterminationofoxygen,nitrogen,andhydrogen.分析儀,就選上海禹重實(shí)業(yè)有限公司,用戶的信賴之選。
Oxygen,Nitrogen,andHydrogeninRefractoryMetalsSummaryOneofthemostcriticalchemicalspecificationsoftitaniumalloysisthehydrogencontent.Toohighofahydrogencontentcancausehydridestoprecipitate,whichcanleadtoembrittlementandsubsequentcrackingwhenthealloyisstressed.Hydrogenpickuptypicallyoccursduringdownstreamprocessingstepssuchasheattreating,pickling,andcleaning.TheLECOONH836isasimultaneousoxygen,nitrogen,andhydrogendeterminatorthatutilizesanelectrodefurnace,inertcarriergas,andbothinfraredandthermalconductivitydetectiontomeettheanalyticalneedsoftherefractorymetalindustry.ThisapplicationnotewaswrittenspecificallyforusewiththeLECOONH836seriesdeterminator.分析儀,就選上海禹重實(shí)業(yè)有限公司,用戶的信賴之選,歡迎新老客戶來(lái)電!安徽專業(yè)元素分析儀廠家供應(yīng)
分析儀,就選上海禹重實(shí)業(yè)有限公司,用戶的信賴之選,有需求可以來(lái)電咨詢!新疆專業(yè)元素分析儀采購(gòu)
InstrumentHighlightsandFeaturesFeaturesandBenefitsLEDlightringilluminatesthefurnaceareaChoiceofeitherargonorheliumcarriergasNovelelectrodedesignincreasesheattransferefficiencyforincreasedstabilityNon-touchinterfacesystemsarealsoavailableUser-friendlybrandsoftwareHigh-PerformanceDetectorDesignThermostaticconstructionprovidesincreasedprotectionfromambienttemperaturefluctuationsOptimizedemittercontrolanddetectioncircuitryimprovestheIRcelllifetimeandlong-termstability,resultinginsuperioraccuracyandprecisionInfrareddetectionforthedeterminationofoxygen,thermoconductivitydetectionforthedeterminationofnitrogen新疆專業(yè)元素分析儀采購(gòu)