ASTM F140-1998(2003) 偏振法测定膨胀特性用的参考玻璃与金属对接密封材料的制作与试验

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【英文标准名称】:StandardPracticeforMakingReferenceGlass-MetalButtSealsandTestingforExpansionCharacteristicsbyPolarimetricMethods
【原文标准名称】:偏振法测定膨胀特性用的参考玻璃与金属对接密封材料的制作与试验
【标准号】:ASTMF140-1998(2003)
【标准状态】:现行
【国别】:
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:C14.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:金属;比较;试验;电子工程;密封件;玻璃;工艺
【英文主题词】:expansionmismatch;glass-metalseals
【摘要】:Thetermx201C;referencex201D;asemployedinthispracticeimpliesthateithertheglassorthemetalofthereferenceglass-metalsealwillbeax201C;standardreferencematerialx201D;suchasthosesuppliedforotherphysicaltestsbytheNationalInstituteforStandardsandTechnology(NIST),orasecondaryreferencematerialwhosesealingcharacteristicshavebeendeterminedbysealstoastandardreferencematerial.5UntilstandardreferencematerialsforsealsareestablishedbytheNIST,secondaryreferencematerialsmaybeagreeduponbetweenmanufacturerandpurchaser.1.1Thispracticecoversthepreparationandtestingofreferenceglass-metalbuttsealsoftwogeneralconfigurations:oneapplicabletodeterminingstressintheglassandtheothertodeterminingthedegreeofmismatchofthermalexpansion(orcontraction).TestsareinaccordancewithTestMethodF218(Section1.1).1.2Thispracticeappliestoallglassandmetal(oralloy)combinationsnormallysealedtogetherintheproductionofelectroniccomponents.Itshouldnotbeattemptedwithglass-metalcombinationshavingwidelydivergentthermalexpansion(orcontraction)properties.
【中国标准分类号】:J22
【国际标准分类号】:21_140
【页数】:6P.;A4
【正文语种】: