【英文标准名称】:Refrigerants-numberdesignation
【原文标准名称】:制冷剂.缩写符号
【标准号】:DIN8962-1987
【标准状态】:作废
【国别】:德国
【发布日期】:1987-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:名称与符号;定义;识别方法;符号;制冷剂;数字标志
【英文主题词】:definitions;identificationmethods;refrigerants;numericaldesignations;designations;symbols
【摘要】:
【中国标准分类号】:J73
【国际标准分类号】:2520
【页数】:5P;A4
【正文语种】:德语


【英文标准名称】:Metallicandotherinorganiccoatings-Measurementofmassperunitarea-Reviewofgravimetricandchemicalanalysismethods
【原文标准名称】:金属和其他无机覆盖层单位面积质量的测量重量分析法和化学分析方法评述
【标准号】:ISO10111-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-06
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC107
【标准类型】:()
【标准水平】:()
【中文主题词】:无机物的;金属覆层;测定;金属;调查;密度测量;化学分析和试验;重量分析;定义;非金属覆层;试验;覆层
【英文主题词】:Chemicalanalysisandtesting;Coatings;Definitions;Densitymeasurement;Determination;Gravimetricanalysis;Inorganic;Metalcoatings;Metals;Methodsofanalysis;Non-metalliccoatings;Surveys;Testing
【摘要】:1GeneralThisInternationalStandardoutlinesgeneralmethodsfordeterminingtheaveragesurfacedensityoverameasuredareaofanodicoxideorofacoatingdepositedautocatalytically,mechanically,bychemicalconversion,byelectrodeposition,byhotdipgalvanizingandbyvacuumusinggravimetricandotherchemicalanalysisproceduresthathaveattainedsomedegreeofnationalorinternationalstandardization.Avarietyofproceduresaredescribedandinclude:—gravimetricproceduresforchemicalorelectrochemicaldissolutionofthecoatingorthesubstratetodeterminethecoatingsurfacedensity;—analyticalproceduresthatutilizedissolutionofthecoatingforphotometricorvolumetricdeterminationofthecoatingsurfacedensity;—non-destructiveinstrumentalphysicalanalysisofthecoatingtodeterminethesurfacedensity.WiththeexceptionofthegravimetricmethoddescribedinISO3892:—thisInternationalStandarddoesnotgivethemeasurementuncertaintiesofthemethodscited.2SourcesThestrippingmethodscitedinannexAaredescribedinspecificationsintheopenliteratureorhavebeenusedroutinelybyatleastonelaboratory.3RestrictionsTheproceduresdescribedcanbeusedformanycoating-substratecombinations.Theycannotbeusedwhereneitherthecoatingnorsubstratematerialcanbecompletelyremoved,onefromtheotherbychemicalorphysicalmeansandthereisaconstituentcommontoboththatisnotreadilyseparated(e.g.nickelphosphorusalloyonnickel).NOTEThemeasurementofverythincoatingsonverysmallpiecescanresultinareductioninaccuracyandalackofrepeatability.Severalmeasurementsusingacombinationofdifferentproceduresonsimilarsamplesmightovercomethissituation.4LimitationsInprinciple,thegravimetricprocedurescanbeusedtomeasureverythincoatingsortomeasurecoatingsoversmallareas,butnotthincoatingsoversmallareas.Thelimitsdependontherequiredaccuracy;e.g.,2,5mg/cmofcoatingmightrequire1cm,but0,1mg/cmofcoatingwouldrequire25cmtoobtain2,5mgofcoating.Theselimitationsdonotapplytothechemicalanalysismethods.Thegravimetricmethoddoesnotindicatethepresenceofbarespotsorsiteswiththicknesseslowerthanthespecifiedminimuminthemeasuringareas.Inaddition,thesinglevalueobtainedfromeachmeasuringareaisthemeanthicknessofthatarea.Therecanbenofurthermathematicalanalysisofthissinglevalue,forexample,forstatisticalprocesscontrolpurposes.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40;25_220_99
【页数】:15P.;A4
【正文语种】:英语