ASTM D 873-2002 航空燃料氧化稳定性的标准试验方法(潜在残留物方法)
作者:标准资料网 时间:2024-05-25 09:53:06 浏览:9564
来源:标准资料网
【英文标准名称】:StandardTestMethodforOxidationStabilityofAviationFuels(PotentialResidueMethod)
【原文标准名称】:航空燃料氧化稳定性的标准试验方法(潜在残留物方法)
【标准号】:ASTMD873-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:石油产品;试验;航空燃气;抗氧化
【英文主题词】:Aviationgas;Oxidationresistance;Petroleumproducts;Testing
【摘要】:
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:Fertilizers-Treatmentwithacationexchangeresinforthedeterminationofthechelatedmicro-nutrientcontentandofthechelatedfractionofmicro-nutrients;GermanversionEN13366:2001
【原文标准名称】:肥料.螯合的微量养料含量和微量养料的螯合系数测定用阳离子交换树脂处理
【标准号】:EN13366-2001
【标准状态】:现行
【国别】:
【发布日期】:2001-04
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:固体;锌;试验;钴;肥料;土壤改良物质;营养液;螯合剂;阳离子交换;测量规程;痕量元素;锰;测定;铜;螯合;铁
【英文主题词】:Cationexchange;Cationexchangers;Chelatingagents;Chelatization;Cobalt;Copper;Determination;Determinationprocedures;Fertilizers;Iron;Manganese;Nutrient;Soilimprovingmaterials;Solids;Testing;Traceelements;Zinc
【摘要】:
【中国标准分类号】:B10
【国际标准分类号】:65_080
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforScratchHardnessofMaterialsUsingaDiamondStylus
【原文标准名称】:用金刚石触针测定材料划痕硬度的标准试验方法
【标准号】:ASTMG171-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:G02.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:scratch;scratchhardness;single-pointabrasion;stylus
【摘要】:Thistestmethodisintendedtomeasuretheresistanceofsolidsurfacestopermanentdeformationundertheactionofasinglepoint(stylustip).Itisacompanionmethodtoquasi-statichardnesstestsinwhichastylusispressedintoasurfaceunderacertainnormalloadandtheresultantdepthorimpressionsizeisusedtocomputeahardnessnumber.Scratchhardnessnumbers,unlikequasi-statichardnessnumbers,involveadifferentcombinationofpropertiesofthesurfacebecausetheindenter,inthiscaseadiamondstylus,movestangentiallyalongthesurface.Therefore,thestressstateunderthescratchingstylusdiffersfromthatproducedunderaquasi-staticindenter.Scratchhardnessnumbersareinprincipleamoreappropriatemeasureofthedamageresistanceofamaterialtosurfacedamageprocessesliketwo-bodyabrasionthanarequasi-statichardnessnumbers.Thistestmethodisapplicabletoawiderangeofmaterials.Theseincludemetals,alloys,andsomepolymers.Themaincriteriaarethatthescratchingprocessproducesameasurablescratchinthesurfacebeingtestedwithoutcausingcatastrophicfracture,spallation,orextensivedelaminationofsurfacematerial.Severedamagetothetestsurface,suchthatthescratchwidthisnotclearlyidentifiableorthattheedgesofthescratcharechippedordistorted,invalidatestheuseofthistestmethodtodetermineascratchhardnessnumber.Sincethedegreeandtypeofsurfacedamageinamaterialmayvarywithappliedload,theapplicabilityofthistesttocertainclassesofmaterialsmaybelimitedbythemaximumloadatwhichvalidscratchwidthmeasurementscanbemade.Theresistanceofamaterialtoabrasionbyasinglepointmaybeaffectedbyitssensitivitytothestrainrateofthedeformationprocess.Therefore,thistestisconductedunderlowstylustraversingspeeds.Useofaslowscratchingspeedalsominimizesthepossibleeffectsoffrictionalheating.Thistestusesmeasurementsoftheresidualscratchwidthafterthestylushasbeenremovedtocomputethescratchhardnessnumber.Therefore,itreflectsthepermanentdeformationresultingfromscratchingandnottheinstantaneousstateofcombinedelasticandplasticdeformationofthesurface.1.1Thisstandarddescribeslaboratoryproceduresfordeterminingthescratchhardnessofthesurfacesofsolidmaterials.Withincertainlimitations,asdescribedinthisguide,thistestmethodisapplicabletometals,ceramics,polymers,andcoatedsurfaces.Thescratchhardnesstest,asdescribedherein,isnotintendedtobeusedasameanstodeterminecoatingadhesion,norisitintendedforusewithotherthanspecifichemispherically-tipped,conicalstyli.1.2Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H22
【国际标准分类号】:17_040_20
【页数】:7P.;A4
【正文语种】:
