ASTM B117-07

盐雾测试标准,供大家参考!

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可靠性文档可靠性资料

关于静电耐量请教

2008-10-29 16:41:11

可靠性资料培训展会

中国赛宝可靠性系列讲座报名已经截止!时间和地点见贴!

2008-10-30 16:06:37

4 条回复 A文章作者 M管理员
  1. shan2_123

    THANKS...

  2. a280221580

    谢谢分享!!!!!!!!!

  3. yeh

    Thesaltsolutionshallbepreparedbydissolving561partsbymassofsodiumchloridein95partsofwaterconformingtoTypeIVwaterinSpecificationD1193(exceptthatforthispracticelimitsforchloridesandsodiummaybeignored).Carefulattentionshouldbegiventothechemicalcontentofthesalt.Thesaltusedshallbesodiumchloridewithnotmorethan0.3%bymassoftotalimpurities.Halides(Bromide,Fluoride,andIodide)otherthanChlorideshallconstitutelessthan0.1%bymassofthesaltcontent.Coppercontentshallbelessthan0.3ppmbymass.Sodiumchloridecontaininganti-cakingagentsshallnotbeusedbecausesuchagentsmayactascorrosioninhibitors.SeeTable1foralistingoftheseimpurityrestrictions.Uponagreementbetweenthepurchaserandtheseller,analysismayberequiredandlimitsestablishedforelementsorcompoundsnotspecifiedinthechemicalcompositiongivenabove.
    ThepHofthesaltsolutionshallbesuchthatwhenatomizedat35°C(95°F)thecollectedsolutionwillbeinthepHrangefrom6.5to7.2.Beforethesolutionisatomizeditshallbefreeofsuspendedsolids.ThepHmeasurementshallbemadeat25°C(77°F)usingasuitableglasspH-sensingelectrode,referenceelectrode,andpHmetersysteminaccordancewithTestMethodE70.

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