【英文标准名称】:StandardTestMethodforDeterminingConcentrationofAirborneSingle-CrystalCeramicWhiskersintheWorkplaceEnvironmentbyScanningElectronMicroscopy
【原文标准名称】:用扫描电子显微技术对工作地点环境中气载单晶陶瓷细丝的浓度测定的标准试验方法
【标准号】:ASTMD6059-1996(2006)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:工作场所大气;空中监视器;取样和分析;扫描电子显微技术;硅电石细丝;单晶陶瓷细丝
【英文主题词】:airmonitoring;samplingandanalysis;scanningelectronmicroscopy;silicon-carbidewhiskers;single-crystalceramicwhiskers;workplaceatmosphere
【摘要】:TheSCCWmaybepresentintheworkplaceatmospherewherethesematerialsaremanufactured,processed,transported,orused.ThistestmethodcanbeusedtomonitorairborneconcentrationsofSCCWfibersintheseenvironments.Itmaybeemployedaspartofapersonalorareamonitoringstrategy.Thistestmethodisbasedonmorphologyandelementalcomposition.TheanalysistechniquehastheabilitytoidentifySCCW.Note18212;ThistestmethodassumesthattheanalystisfamiliarwiththeoperationofSEM/EDSinstrumentationandtheinterpretationofdataobtainedusingthesetechniques.Thistestmethodisnotappropriateformeasurementoffiberswithdiametersx2264;0.10to0.25x03BC;mduetovisibilitylimitationsassociatedwithSEM.TheTEMmethodmaybeusedtoprovideadditionalsizeinformationofSCCWifneeded(seePracticeD6058foradditionalinformationontheuseofthistestmethod).Resultsfromtheuseofthistestmethodshallbereportedalongwith95%confidencelimitsforthesamplesbeingstudied.Individuallaboratoriesshalldeterminetheirintralaboratorycoefficientofvariationanduseitforreporting95%confidencelimits(1,3,4).1.1Thistestmethodcoversthesamplingmethodsandanalysistechniquesusedtoassesstheairborneconcentrationandsizedistributionofsingle-crystalceramicwhiskers(SCCW),suchassiliconcarbideandsiliconnitride,whichmayoccurinandaroundtheworkplacewherethesematerialsaremanufactured,processed,transported,orused.Thistestmethodisbasedonthecollectionoffibersbyfiltrationofaknownquantityofairthroughafilter.Thefilterissubsequentlyevaluatedwithascanningelectronmicroscope(SEM)forthenumberoffibersmeetingappropriatelyselectedmorphologicalandcompositionalcriteria.ThistestmethodhastheabilitytodistinguishamongmanydifferenttypesoffibersbasedonenergydispersiveX-rayspectroscopy(EDS)analysis.Thistestmethodmaybeappropriateforotherman-mademineralfibers(MMMF).1.2Thistestmethodisapplicabletothequantitationoffibersonacollectionfilterthataregreaterthan5minlength,lessthan3minwidth,andhaveanaspectratioequaltoorgreaterthan5:1.Thedataaredirectlyconvertibletoastatementofconcentrationperunitvolumeofairsampled.ThistestmethodislimitedbythediameterofthefibersvisiblebySEM(typicallygreaterthan0.10to0.25minwidthasdeterminedin12.1.5)andtheamountofcoincidentinterferenceparticles.1.3Amoredefinitiveanalysismaybenecessarytoconfirmthepresenceoffiberswithdiameters0.10to0.25minwidth.Forthispurpose,atransmissionelectronmicroscope(TEM)isappropriate.TheuseoftheTEMmethodfortheidentificationandsizemeasurementofSCCWisdescribedinPracticeD6058andTestMethodD6056.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:9P.;A4
【正文语种】:
基本信息
标准名称: | 润滑脂防腐蚀性试验法 |
英文名称: | Standard test method for corrosion preventive properties of lubricating greases |
中标分类: |
石油 >>
石油产品 >>
润滑脂 |
ICS分类: |
石油及相关技术 >>
润滑剂、工业油及相关产品
|
替代情况: | 被GB/T 5018-2008代替 |
发布部门: | 国家标准局 |
发布日期: | 1985-03-26 |
实施日期: | 1985-01-02 |
首发日期: | 1985-03-26 |
作废日期: | 2008-09-01 |
主管部门: | 中国石油化工集团公司 |
归口单位: | 中国石油化工集团公司 |
起草单位: | 北京石油化工科学研究院 |
出版社: | 中国标准出版社 |
出版日期: | 1900-01-01 |
页数: | 5页 |
适用范围
本方法适用于在潮湿情况下存放涂有润滑脂的锥形滚子轴承来测定润滑脂的防腐蚀性能。本方法是根据能表示试验室结果与用润滑脂润滑的飞机轮轴承使用结果的对应关系的CRC技术文件L41制订的。
前言
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引用标准
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所属分类: 石油 石油产品 润滑脂 石油及相关技术 润滑剂 工业油及相关产品