BS EN 12500-2000 金属材料防腐.大气环境下的腐蚀概率.大气环境腐蚀性的分类、测定和评估
时间:2024-05-16 13:19:58 来源: 标准资料网 作者：标准资料网 阅读：9420
【英文标准名称】:Protectionofmetallicmaterialsagainstcorrosion-Corrosionlikelihoodinatmosphericenvironment-Classification,determinationandestimationofcorrosivityofatmosphericenvironments
【原文标准名称】:金属材料防腐.大气环境下的腐蚀概率.大气环境腐蚀性的分类、测定和评估
【标准号】:BSEN12500-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-08-15
【实施或试行日期】:2000-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:分类系统;覆层;大气腐蚀;大气;气候;金属;腐蚀;防腐蚀;估计;腐蚀试验
【英文主题词】:Assessment;Atmosphericcorrosion;Classification;Corrosionprotection;Corrosivity;Definition;Definitions;Design;Determination;Instruments;Materialstesting;Metallicmaterials;Metals;Probability
【摘要】:ThisEuropeanStandardestablishesaclassificationsystemforthecorrosivityofatmosphericenvironments.It:—definescorrosivitycategoriesoftheatmosphericenvironmentstakingintoaccountISO9223;—describesthedeterminationofcorrosivitybasedonassessmentofmasslossofstandardspecimensafterthefirstyearofexposure;—canbeusedtoestimatethecorrosivityofanenvironmentbasedonknowledgeoflocalconditionsorofspecificdatathatcharacterizethelocalconditions,whereitisnotpossibletomakeanexperimentaldetermination.Itcannotbeusedtodeterminecorrosivitycategoriesfromexposureperiodsoflessthanorgreaterthanthefirstyear.Theclassificationsystemcontributesto:—theknowledgeandcomparisonofcorrosivityofatmosphericenvironmentsatdifferentlocations;—thechoiceofmaterialsandcorrosionprotectionmeasures.ThisEuropeanStandarddoesnotcharacterizethecorrosivityofspecialserviceatmosphericenvironments,e.g.chemicalandmetallurgicalplantsandenvironmentswithextremechloridedepositionsuchassplashzones.
【中国标准分类号】:A29
【国际标准分类号】:77_060
【页数】:20P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforComparingParticleSizeintheUseofAlternativeTypesofParticleCounters
【原文标准名称】:替换型粒子计数器使用过程中粒度比较的标准实施规范
【标准号】:ASTMF660-1983(2007)
【标准状态】:现行
【国别】:
【发布日期】:1983
【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】:D19.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:材料;试验;实验室器皿;粒度;计数器;统计学;试验设备;比较;颗粒
【英文主题词】:particlecounters;Strokesdiameter
【摘要】:Thispracticesupportstestmethodsdesignedtoevaluatetheperformanceoffluid-filtermedia,forexample,PracticeF796whereinparticlesizedistributionsareaddressedandatthesametimethispracticeprovidesameanstocomparesizemeasurementsobtainedfromseveraldifferenttypesofinstruments.Thefactorforconvertingonekindofdiameterscaletoanotherisonlyvalidforthespecifictestparticlesstudied.1.1Thispracticeprovidesaprocedureforcomparingthesizesofnonsphericalparticlesinatestsampledeterminedwithdifferenttypesofautomaticparticlecounters,whichoperateondifferentmeasuringprinciples.1.2Ascalefactorisobtainedbywhich,intheexaminationofagivenpowder,thesizescaleofoneinstrumentmaybemultipliedtoagreewiththesizescaleofanother.1.3Thepracticeconsidersrigidparticles,freeoffibers,ofthekindusedinstudiesoffiltration,suchas:commerciallyavailableteststandardsofquartzoralumina,orflyash,orsomepowderedchemicalreagent,suchasironoxideorcalciumsulfate.1.4Threekindsofautomaticparticlecountersareconsidered:1.4.1Imageanalyzers,whichviewstationaryparticlesunderthemicroscopeand,inthispractice,measurethelongestend-to-enddistanceofanindividualparticle.1.4.2Opticalcounters,whichmeasuretheareaofashadowcastbyaparticleasitpassesbyawindow;and1.4.3Electricalresistancecounters,whichmeasurethevolumeofaparticleasitpassesthroughanorificeinanelectricallyconductiveliquid.1.5Thispracticealsoconsiderstheuseofinstrumentsthatprovidesedimentationanalyses,whichistosayprovidemeasuresoftheparticlemassdistributionasafunctionofStokesdiameter.ThepracticeprovidesawaytoconvertmassdistributionintonumberdistributionsothatthemeaningofStokesdiametercanberelatedtothediametermeasuredbytheinstrumentsin1.4.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F80
【国际标准分类号】:19_120
【页数】:5P.;A4
【正文语种】:
【英文标准名称】:Plainbearings;Compressiontestingofmetallicbearingmaterials
【原文标准名称】:滑动轴承金属轴承材料的抗压试验
【标准号】:ISO4385-1981
【标准状态】:现行
【国别】:国际
【发布日期】:1981-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC123
【标准类型】:()
【标准水平】:()
【中文主题词】:材料;定义;轴承;压缩试验;试验;压力试验;滑动轴承;试验结果;机械试验;轴承合金
【英文主题词】:Bearingalloys;Bearings;Compressiontesting;Definitions;Materials;Mechanicaltesting;Plainbearings;Pressuretests;Testresults;Testing;Tests
【摘要】:Thiscompressiontestingservesforthedeterminationofthebehaviourofmetallicmaterialsunderuniaxialcompressionloadingwhichistuniformlydistributedoverthecross-section.Forthispurpose,acylindricalspecimenissubjectedtocompressionwhichisslowlyandcontinuouslyincreased,andthecompressiveforceusedismeasured.
【中国标准分类号】:H22
【国际标准分类号】:21_100_10
【页数】:4P.;A4
【正文语种】:英语