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GB 10527-1989 橡胶配合剂 沉淀水合二氧化硅折光率的测定

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标准名称:橡胶配合剂 沉淀水合二氧化硅折光率的测定
中标分类: 化工 >> 橡胶制品及其辅助材料 >> 炭黑
替代情况:调整为HG/T 3071-1989(1997)
发布日期:
实施日期:1989-12-01
首发日期:
作废日期:
出版日期:
页数:2页
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所属分类: 化工 橡胶制品及其辅助材料 炭黑
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【英文标准名称】:StandardPracticeforAnalyticallyDescribingSputter-Depth-ProfileInterfaceDatabyanExtendedLogisticFunction
【原文标准名称】:用扩展的逻辑函数分析描述溅射深度剖面接口数据的标准规程
【标准号】:ASTME1636-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E42.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分析;实施规程;深度;质谱学
【英文主题词】:logisticfunction;sputter-depth-profileinterfacedata
【摘要】:Informationoninterfacecompositionisfrequentlyobtainedbymeasuringsurfacecompositionwhilethespecimenmaterialisgraduallyremovedbyionbombardment(seeGuideE1127andPracticeE1162).Inthisway,interfacesarerevealedandcharacterizedbythemeasurementofcompositionversusdepthtoobtainasputter-depthprofile.Theshapeofsuchinterfaceprofilescontainsinformationaboutthephysicalandchemicalpropertiesoftheinterfaceregion.Inordertoaccuratelyandunambiguouslydescribethisinterfaceregionandtodetermineitswidth(seeGuideE1438),itisnecessarytodefinetheshapeoftheentireinterfaceprofilewithasingleanalyticfunction.Althoughnogeneralphysicalmodelcurrentlyexistsfordescribingtheshapeofinterfacesputter-depthprofiles,interfaceprofilesdohaveasigmoidalshapecharacteristicofthecumulativelogisticdistribution.Useofsuchalogisticfunctionisphysicallyplausibleandissuperiortootherfunctions(forexample,polynomials)thathaveheretoforebeenusedforinterfaceprofileanalysisinthatitcontainstheminimumnumberofparametersfordescribinginterfaceshapes.Manyattemptshavebeenmadetocharacterizeinterfaceprofileswithgeneralfunctions(suchaspolynomialsorerrorfunctions)butthesehavesufferedfrominstabilitiesandaninabilitytohandlepoorlystructureddata.Choiceofthelogisticfunctionalongwithaspecificallywrittenleast-squaresprocedure(describedinAppendixX1)canprovidestatisticallyevaluatedparametersthatdescribethewidth,asymmetry,anddepthofinterfaceprofilesinareproducibleandunambiguousway.1.1Thispracticecoversasystematicmethodforanalyzingsputter-depth-profileinterfacedataandforaccuratelycharacterizingtheshapeoftheinterfaceregion.Interfaceprofiledataaredescribedwithanappropriateanalyticfunction;theparametersofthisfunctiondefinetheinterfacewidth,itsasymmetry,anditsdepthfromtheoriginalsurface.Theuseofthispracticeisrecommendedinorderthattheshapesofcompositionprofilesofinterfacesacquiredwithdifferentinstrumentsandtechniquesondifferentmaterialscanbeunambiguouslycomparedandinterpreted.1.2Thispracticeisintendedtobeusedtodescribetheshapeofdepthprofiledataobtainedataninterfacebetweentwodissimilarmaterialsforthatcaseinwhichthemeasuredconcentrationoftheoutermaterialgoesfrom100to0%andtheinnermaterialgoesfrom0to100%.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:71_040_50
【页数】:7P.;A4
【正文语种】:


【英文标准名称】:Fertilizersandlimingmaterials-Determinationofcarbondioxide-Part2:Methodforlimingmaterials;GermanversionEN14397-2:2004
【原文标准名称】:肥料和石灰浸物质.二氧化碳的测定.第2部分:石灰浸物质用方法
【标准号】:EN14397-2-2004
【标准状态】:现行
【国别】:
【发布日期】:2004-09
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:二氧化碳;钙有机化合物;镁有机化合物;土壤改良物质;肥料;固体;镁;土壤改良;低压;农业;钙;矿;定义
【英文主题词】:Agriculture;Calcium;Calciumorganiccompounds;Carbondioxide;Definition;Definitions;Fertilizers;Lowpressure;Magnesium;Magnesiumorganiccompounds;Mineral;Soilimprovement;Soilimprovingmaterials;Solids
【摘要】:
【中国标准分类号】:B13
【国际标准分类号】:65_080
【页数】:11P.;A4
【正文语种】:英语