ASTM F144-1980(2005) 偏振法测定膨胀特性用的参考玻璃金属夹层密封材料的制作与试验

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【英文标准名称】:StandardPracticeforMakingReferenceGlass-MetalSandwichSealandTestingforExpansionCharacteristicsbyPolarimetricMethods
【原文标准名称】:偏振法测定膨胀特性用的参考玻璃金属夹层密封材料的制作与试验
【标准号】:ASTMF144-1980(2005)
【标准状态】:现行
【国别】:
【发布日期】:1980
【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】:C14.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:试验;电子工程;夹心部件;工艺;玻璃;比较;密封件;金属
【英文主题词】:expansionmismatch;glass-metalseals
【摘要】:Thetermx201C;referencex201D;asemployedinthispracticeimpliesthateithertheglassorthemetalofthereferenceglass-metalsealwillbeax201C;standardreferencematerialx201D;suchasthosesuppliedforotherphysicaltestsbytheNationalInstituteofStandardsandTechnology,orasecondaryreferencematerialwhosesealingcharacteristicshavebeendeterminedbysealstoastandardreferencematerial(seeNBSSpecialPublication260).UntilstandardreferencematerialsforsealsareestablishedbytheNIST,secondaryreferencematerialsmaybeagreeduponbetweenmanufacturerandpurchaser.1.1Thispracticecoversthepreparationandtestingofareferenceglass-metalsandwichsealfordeterminingstressintheglassorfordeterminingthedegreeofthermalexpansion(orcontraction)mismatchbetweentheglassandmetal.TestsareinaccordancewithMethodF218(Section2).1.2Thispracticeappliestoallglassandmetal(oralloy)combinationsnormallysealedtogetherintheproductionofelectroniccomponents.1.3Thepracticallimitofthetestinderivingmismatchisapproximately300ppm,abovewhichtheglassislikelytofracture.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J22
【国际标准分类号】:21_140
【页数】:5P.;A4
【正文语种】: