NF A51-202/A1-2000 铜和合金铜.锅炉、压力容器和热水贮存器用的板材、薄板和圆材

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【英文标准名称】:StandardTestMethodforSimultaneousThicknessandElectrodePotentialDeterminationofIndividualLayersinMultilayerNickelDeposit(STEPTest)
【原文标准名称】:多层镍镀层中单层的同步厚度和电极电势测定的标准试验方法(STEP试验)
【标准号】:ASTMB764-2004
【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】:B08.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:覆层技术;镍;覆层;试验;电化学镀覆;表面处理;厚度;覆层厚度;金属的;金属;金属覆层
【英文主题词】:potential;STEP;thickness
【摘要】:Theabilityofamultilayernickeldeposittoenhancecorrosionresistanceisafunctionofthedifferenceintheelectrodepotentialsofthenickellayers(asmeasuredindividuallyatafixedcurrentdensityinagivenelectrolyteversusareferenceelectrode)andthethicknessesofthelayers.Thepotentialdifferencesmustbesufficienttocausethebrightnickelortoplayertocorrodepreferentiallyandsacrificiallywithrespecttothesemi-brightnickellayerbeneathit.Thistestprocedureallowsthemeasurementofthesepotentialdifferencesdirectlyonanelectroplatedpartratherthanonseparatefoilspecimensinsuchawaythattimedeterminesthethicknessofeachlayer,whilethepotentialdifferencebetweennickellayersisanindicationofthecorrosionresistanceofthetotalnickeldeposit.Theinterpretationandevaluationoftheresultsofthistestshouldbebyagreementbetweenthepurchaserandthemanufacturer.Note18212;Thistestmaybeusedasaqualityassurancetestofthemultilayernickelcoatingsappliedinproduction.Itshouldbeunderstoodthatduetomanyfactorsthatinfluencetheprogressofcorrosionduringactualuseofthepart,theperformanceofdifferentmultilayernickeldepositsinthetestcannotbetakenasanabsoluteindicatoroftherelativecorrosionresistanceofthesedepositsinservice.1.1Thistestmethodcloselyestimatesthethicknessofindividuallayersofamultilayernickelelectrodepositandthepotentialdifferencesbetweentheindividuallayerswhilebeinganodicallystrippedatconstantcurrentdensity.1.2Thistestmethoddoesnotcoverdepositsystemsotherthanmultilayerelectroplatednickeldeposits.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Flexibleinsulatingsleeving-Part3:Specificationsforindividualtypesofsleeving;Sheets240to243:Heat-shrinkablePTFEsleeving(IEC60684-3-240to243:2002);GermanversionEN60684-3-240to243:2002
【原文标准名称】:绝缘软管.第3部分:各型软管规范.240至243节:热收缩聚四氟乙烯(PTFE)绝缘软管
【标准号】:DINEN60684-3-240bis243-2003
【标准状态】:现行
【国别】:德国
【发布日期】:2003-04
【实施或试行日期】:2003-04-01
【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】:防护软管;收缩套管;收缩率;PTFE;测定;特性;颜色;试验条件;柔性管;规范(验收);名称与符号;壁厚;塑料;耐力;定型试验;热缩元件;绝缘材料;试验;温度范围;电绝缘材料;柔性材料;聚四氟乙烯;聚四氟乙烯;电气工程;塑料软管;
【英文主题词】:
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:12P;A4
【正文语种】:德语