ISO 4524-2-2000 金属覆盖层金和金合金电镀层的试验方法第2部分:混合流动气体(MFG)环境试验

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【英文标准名称】:Metalliccoatings-Testmethodsforelectrodepositedgoldandgoldalloycoatings-Part2:Mixedflowinggas(MFG)environmentaltests
【原文标准名称】:金属覆盖层金和金合金电镀层的试验方法第2部分:混合流动气体(MFG)环境试验
【标准号】:ISO4524-2-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC107
【标准类型】:()
【标准水平】:()
【中文主题词】:装饰覆层;金;流动;金覆层;金属覆层;环境条件;防护覆层;电解镀层;电解镀层;混合气体;电镀;试验;环境试验;金合金;覆层
【英文主题词】:
【摘要】:ThispartofISO4524providesproceduresforconductingmixedflowinggas(MFG)environmentaltestsinvolvingexposurestocontrolledquantitiesofcorrosivegasmixtures.Itdescribestherequiredequipmentandthemethodsforgas,temperatureandhumiditycontrolthatenableteststobeconductedinareproduciblemanner.Reproducibilityismeasuredthroughtheuseofcontrolcouponsthecorrosionfilmsofwhichareevaluatedbymassgain,coulometryorbyvariouselectronandX-raybeamanalysistechniques.Reproducibilitycanalsobemeasuredbyinsitucorrosionratemonitorsusingelectricalresistanceormassfrequencychangemethods.MFGtestscanbeusedto:—evaluatenovelelectricalcontactmetallizationforsusceptibilitytodegradationduetoenvironmentalexposuretothetestcorrosivegases;—evaluatetheshieldingcapabilityofconnectorhousingsthatmayactasabarriertotheingressofcorrosivegases;—evaluatethesusceptibilityofotherconnectormaterialssuchasplastichousingstodegradationfromthetestcorrosivegases.MFGtestsarenotnormally:—usedasporositytests(forguidanceonporositytesting,seeISO10308,Metalliccoatings—reviewofporositytests);—applicablewherethefailuremechanismisotherthanpollutantgascorrosionsuchasintin-coatedseparablecontacts.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:31P;A4
【正文语种】:英语