【英文标准名称】:Specificationforceramiccomponentsforuseinenvelopesforelectronictubes
【原文标准名称】:电子管外壳用陶瓷部件规范
【标准号】:BS4789-1972
【标准状态】:现行
【国别】:英国
【发布日期】:1972-03-30
【实施或试行日期】:1972-03-30
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Liststhedefinitions,propertiesandtestmethodsandgivesthetestschedulesfortype,batchandcomponenttestingofthreecategoriesofceramicmaterialsuitableforuseinelectronictubeenvelopes.
【中国标准分类号】:L35;L92
【国际标准分类号】:81_060_20
【页数】:20P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodfortheDeterminationofUraniumorGadolinium,orBoth,inGadoliniumOxide-UraniumOxidePelletsorbyX-RayFluorescence(XRF)
【原文标准名称】:用X射线荧光法(XRF)测定氧化钆和氧化铀颗粒中铀或钆或者两者的试验方法
【标准号】:ASTMC1456-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:gadoliniumoxide;uraniumoxide;X-rayfluorescence;XRF;Gadoliniumoxidepowder(nucleargrade);Gadoliniumoxide-uraniumdioxidepowder/pellets;Uraniumoxide(U3O8);XRF(X-rayfluorescence)--nuclearmaterials
【摘要】:Thistestmethodisapplicabletosamplescontaining2to10%gadoliniumoxideand90to98%uraniumoxideonthex201C;asreceivedx201D;basis.Themethodmaybeusedtodetermineconcentrationofeitheruranium,gadolinium,orboth.Eitherwavelength-dispersiveorenergy-dispersiveX-rayfluorescencesystemsmaybeusedprovidedthesoftwareaccompanyingthesystemisabletoaccommodatetheuseofinternalstandards.1.1ThistestmethoddescribesthestepsnecessaryforthepreparationandanalysisbyX-rayfluorescence(XRF)ofgadoliniumoruranium(orboth)ingadoliniumoxide-uraniumoxidepelletsorpowders.1.2Thistestmethodrequirestheuseofappropriateinternalstandard(s).Caremustbetakentoascertainthatsamplesanalyzedbythismethoddonotcontaintheinternalstandardelement(s)orthatthiscontaminationhasbeencorrectedformathematicallywheneverpresent.Suchcorrectionsarenotaddressedinthistestmethod.1.3Thisstandardcontainsnotesthatareexplanatoryandarenotpartofthemandatoryrequirementsofthestandard.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionsaregiveninSection8andvariousnotesthroughoutthemethod.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:4P.;A4
【正文语种】:英语