BS DD CEN/TS 15559-2007 肥料.依照Arnd的氮和氨态氮的测定
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【英文标准名称】:Fertilizers-DeterminationofnitricandammoniacalnitrogenaccordingtoArnd
【原文标准名称】:肥料.依照Arnd的氮和氨态氮的测定
【标准号】:BSDDCEN/TS15559-2007
【标准状态】:作废
【国别】:英国
【发布日期】:2007-05-31
【实施或试行日期】:2007-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:氨态氮;铵;Arnd;化学分析和试验;测定;含量测定;蒸馏;肥料;指示器;硝酸盐;氮;抽样方法;土壤改良;土壤改良物质;溶液;规范(验收);试样制备;试验设备;测试
【英文主题词】:Ammoniacalnitrogen;Ammonium;Arnd;Chemicalanalysisandtesting;Determination;Determinationofcontent;Distillation;Fertilizers;Indicators;Nitrates;Nitrogen;Samplingmethods;Soilimprovement;Soilimprovingmaterials;Solutions;Specification(approval);Specimenpreparation;Testequipment;Testing
【摘要】:ThisTechnicalSpecificationspecifiesamethodforthedeterminationofnitricandammoniacalnitrogenwithreductionaccordingtoArnd(modifiedforeachofthevariantsa,bandc).Themethodisapplicabletoallnitrogenousfertilizers,includingcompoundfertilizers,inwhichnitrogenisfoundexclusivelyinnitrateform,orinammoniacalandnitrateform.
【中国标准分类号】:G21
【国际标准分类号】:65_080
【页数】:18P.;A4
【正文语种】:英语
【英文标准名称】:Specificationfornickel-chromium-cobalt-aluminium-molybdenum-titaniumheat-resistingalloybillets,bars,forgingsandparts(nickelbase,Cr15,Co14.2,Al5,Mo4,Ti4)
【原文标准名称】:镍-铬-钴-铝-钼-钛耐热合金坯锭、棒材、锻件和部件规范(镍基Cr15、Co14.2、Al5、Mo4、Ti4)
【标准号】:BSHR4-1972
【标准状态】:现行
【国别】:英国
【发布日期】:1972-04-28
【实施或试行日期】:1972-04-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:航空运输工程;棒材;坯锭;化学成分;含铬合金;含钴合金;锻件;热处理;耐热材料;材料的机械性能;含钼合金;镍合金;半成品;含钛合金
【英文主题词】:Airtransportengineering;Bars(materials);Billets;Chemicalcomposition;Chromium-containingalloys;Cobalt-containingalloys;Forgings;Heattreatment;Heat-resistantmaterials;Mechanicalpropertiesofmaterials;Molybdenum-containingalloys;Nickelalloys;Semi-finishedproducts;Titanium-containingalloys
【摘要】:BRITISHSTANDARD:AEROSPACESERIESSPECIFICATIONFORNICKEL-CHROMIUM-COBALT-ALUMINIUM-MOLYBDENUM-TITANIUMHEAT-RESISTINGALLOYBILLETS,BARS,FORGINGSANDPARTS(Nickelbase,Cr15,Co14.2,Al5,Mo4,Ti4)1.INSPECTIONANDTESTINGPROCEDURE2.MANUFACTURE3.CHEMICALCOMPOSITION4.CONDITION5.HEATTREATMENT6.MECHANICALPROPERTIES
【中国标准分类号】:V11
【国际标准分类号】:49_025_99
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforConductingCyclicGalvanostaircasePolarization
【原文标准名称】:循环电流梯级极化的标准试验方法
【标准号】:ASTMG100-1989(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1989
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:G01.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aluminum;corrosion;electrochemicalmeasurement;galvanostaircase;localizedcorrosion;polarization;UNSA93003(Wr.alum.alloy);Alloys;Aluminumalloys--corrosiontesting;Breakdownpotential(Eb);Crevicecorrosion;Cycliccorrosiontesti
【摘要】:Inthistestmethod,susceptibilitytolocalizedcorrosionofaluminumisindicatedbyaprotectionpotential(Eprot)determinedbycyclicgalvanostaircasepolarization(1).Themorenoblethispotential,thelesssusceptibleisthealloytoinitiationoflocalizedcorrosion.Theresultsofthistestmethodarenotintendedtocorrelateinaquantitativemannerwiththerateofpropagationoflocalizedcorrosionthatonemightobserveinservice.Thebreakdown(Eb),andprotectionpotentials(Eprot)determinedbythecyclicGSCPmethodcorrelatewiththeconstantpotentialcorrosiontest(immersion-glassware)resultforaluminum(1,6,8).WhentheappliedpotentialwasmorenegativethantheGSCPEprot,nopitinitiationwasobserved.WhentheappliedpotentialwasmorepositivethantheGSCPEprot,pittingoccurredevenwhentheappliedpotentialwaslessnegativethanEb.SeverecrevicecorrosionoccurredwhentheseparationofEbandEprotwas500mVorgreaterandEprotwaslessthanx2212;400mVVs.SCE(in100ppmNaCl)(1,6,7).Foraluminum,EprotdeterminedbycyclicGSCPagreeswiththerepassivationpotentialdeterminedbythescratchpotentiostaticmethod(1,10).BoththescratchpotentiostaticmethodandtheconstantpotentialtechniquefordeterminationofEprotrequiremuchlongertesttimesandaremoreinvolvedtechniquesthantheGSCPmethod.DeBerryandViebeck(3-5)foundthatthebreakdownpotentials(Eb)(galvanodynamicpolarization,similartoGSCPbutnokineticinformation)hadagoodcorrelationwiththeinhibitionoflocalizedcorrosionof304Lstainlesssteelbysurfaceactivecompounds.Theyattainedaccuracyandprecisionbyavoidingthestronginductioneffectwhichtheyobservedbythepotentiodynamictechnique.Ifthistestmethodisfollowedusingthespecificalloydiscusseditwillprovide(GSCP)measurementsthatwillreproducedatadevelopedatothertimesinotherlaboratories.EbandEprotobtainedarebasedontheresultsfromeightdifferentlaboratoriesthatfollowedthestandardprocedureusingaluminumalloy3003-H14(UNSA93003).EbandEprotareincludedwithstatisticalanalysistoindicatetheacceptablerange.1.1Thistestmethodcoversaprocedureforconductingcyclicgalvanostaircasepolarization(GSCP)todeterminerelativesusceptibilitytolocalizedcorrosion(pittingandcrevicecorrosion)foraluminumalloy3003-H14(UNSA93003)(1).Itmayserveasguideforexaminationofotheralloys(2-5).Thistestmethodalsodescribesaprocedurethatcanbeusedasacheckforone''sexperimentaltechniqueandinstrumentation.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafet......
【中国标准分类号】:A29
【国际标准分类号】:25_220_20
【页数】:4P.;A4
【正文语种】:英语
