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.减少了繁琐的额外数据处理。湖南分析仪厂家报价
SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.浙江元素分析仪采购无需人工干预的全自动清扫系统。
Procedure–Powder/ChipSamplesPreparetheinstrumentasoutlinedintheoperatorsinstructionmanual.Determinetheinstrumentblank.LoginaminimumofthreeBlankreps.PresstheAnalyzebuttonontheinstrumentscreen.Afterashortdelay,theloadingheadslide-blockwillopen.Inserta***NickelCapsule(leavecapsuleopen)intotheopenportattopofloadinghead.Note:samplesusingautomationshouldbeplacedintheappropriateautoloaderpositionbeforestartingtheanalysissequence.Oncethesequencehasstarted,theautomaticanalysiswillstartandendautomatically.
氧氮氢分析仪氧氮氢分析仪是一种用于材料科学领域的仪器，于2016年03月09日启用。技术指标测量范围：ON低氧0.0－300ppmOH低氧0.0－300ppm高氧0.0－2%高氧0.0－2%低氮0.0―300ppm低氢0.0－50ppm高氮0.0－2%高氢0.0－1000ppm灵敏度：氧0.01ppm；氮0.1ppm；氢0.01ppm。主要功能该仪器配置有16位微处理器和两个**的分别检测高氧和低氧的红外检测池。氮和氢通过双重范围的热导检测池测量。分析过程中可自动实现从低范围到高范围的切换。样品在高功率脉冲炉的石墨坩埚中加热可达3000℃以上高温，脉冲炉采用循环水冷却。该仪器具有灵敏度高、性能好、测量范围宽和分析结果准确可靠等优点。ONH-2000氧氮氢分析仪是为快速、准确测定铜、钢、铸铁、合金、钛、镍、钼、锆、陶瓷和其它无机材料中氧、氮、氢的含量而专门设计制造的。OHN836系列仪器采用惰性熔融法。
Oxygen,Nitrogen,andHydrogeninRefractoryMetalsSummaryTitaniumisametalthatcanbecombinedwithelementssuchasaluminum,vanadium,molybdenum,andtintoproducehigh-strength,lowdensity,andcorrosion-resistantalloys.Titaniumalloysareusedbythemilitary,medicaldevices,sportinggoods,andaerospaceindustriesbecauseoftheseproperties,andduetothestrictdemandsoftheseindustries,effortneedstobetakentoassurethatthematerialmeetsthehighestofqualitystandards.改进的红外检测池技术。山西美国LECO分析仪价格
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Procedure–Powder/ChipSamplesDeterminetheinstrumentblank.PresstheAnalyzebuttonontheinstrumentscreen,thelowerelectrodewillcloseandtheanalysissequencewillstartandendautomatically.Repeatsteps2bthrough2gaminimumofthreetimes.Settheblankfollowingtheprocedureoutlinedintheoperatorsinstructionmanual.Instrumentcalibration/driftcorrection.LoginaminimumofthreeStandardreps.Weighapproximately***gramsofacalibration/driftstandardintoa***NickelCapsule;enterthemassandstandardidentificationintoappropriaterepfields.Ifapplicable,placethenickelcapsuleintheappropriateautoloaderposition.Note:LECOReferenceMateria***onotrequirepreparation.Seepreparationstatementonthereferencematerialcertificate.SolidStandardsmaybeusedtocalibratewhenchiporpowderstandardsarenotavailable.湖南分析仪厂家报价
