ASTM E1920-2003(2008) 热喷涂层的金相制备用标准指南
作者:标准资料网 时间:2024-05-27 02:47:34 浏览:8336
来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardGuideforMetallographicPreparationofThermalSprayedCoatings
【原文标准名称】:热喷涂层的金相制备用标准指南
【标准号】:ASTME1920-2003(2008)
【标准状态】:现行
【国别】:美国
【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】:E04.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:flamespray;flamesprayedcoating;highvelocityoxy&x2013;fuelcoatings;HVOFcoatings;metallography;plasmaspray;plasmasprayedcoatings;specimenpreparation,metallographic;thermalsprayedcoatings;thermalspray;Fla
【摘要】:TSCsareusedinanumberofcriticalindustrialcomponents.TSCscanbeexpectedtocontainmeasurablelevelsofporosityandlineardetachment.Accurateandconsistentevaluationofspecimensisessentialtoensuretheintegrityofthecoatingandproperadherencetothesubstrate.Example1:Byuseofinappropriatemetallographicmethods,theapparentamountofporosityandlineardetachmentdisplayedbyagivenspecimencanbeincreased,byexcessiveedgerounding,ordecreasedbysmearingofmaterialintovoids.Thereforeinaccuratelevelsofporosityandlineardetachmentwillbereportedevenwhentheaccuracyofthemeasurementtechniqueisacceptable.Example2:Inconsistentmetallographicpreparationmethodscancausetheapparentamountofvoidstovaryexcessivelyindicatingapoorlycontrolledthermalsprayprocess,whiletheuseofconsistentpracticewillregularlydisplaythetruemicrostructureandverifytheconsistencyofthethermalsprayprocess.DuringthedevelopmentofTSCprocedures,metallographicinformationisnecessarytovalidatetheefficacyofaspecificapplication.Crosssectionsareusuallytakenperpendiculartothelongaxisofthespecimenandpreparedtorevealinformationconcerningthefollowing:Variationsinstructurefromsurfacetosubstrate,Thedistributionofunmeltedparticlesthroughoutthecoating,Thedistributionoflineardetachmentthroughoutthecoating,Thedistributionofporositythroughoutthecoating,Thepresenceofcontaminationwithinthecoating,Thethicknessofthecoating(topcoatandbondcoat,whereapplicable),Thepresenceofinterfacialcontamination,Theintegrityoftheinterfacebetweenthecoatingandsubstrate,and,Theintegrityofthecoatingmicrostructurewithrespecttochemistry.1.1Thisguidecoversrecommendationsforsectioning,cleaning,mounting,grinding,andpolishingtorevealthemicrostructuralfeaturesofthermalsprayedcoatings(TSCs)andthesubstratestowhichtheyareappliedwhenexaminedmicroscopically.Becauseofthediversityofavailableequipment,thewidevarietyofcoatingandsubstratecombinations,andthesensitivityofthesespecimenstopreparationtechnique,theexistenceofaseriesofrecommendedmethodsformetallographicpreparationofthermalsprayedcoatingspecimensishelpful.Adherencetothisguidewillprovidepractitionerswithconsistentandreproducibleresults.AdditionalinformationconcerningstandardpracticesformetallographicpreparationcanbefoundinPracticeE3.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_20
【页数】:5P.;A4
【正文语种】:英语
【原文标准名称】:热喷涂层的金相制备用标准指南
【标准号】:ASTME1920-2003(2008)
【标准状态】:现行
【国别】:美国
【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】:E04.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:flamespray;flamesprayedcoating;highvelocityoxy&x2013;fuelcoatings;HVOFcoatings;metallography;plasmaspray;plasmasprayedcoatings;specimenpreparation,metallographic;thermalsprayedcoatings;thermalspray;Fla
【摘要】:TSCsareusedinanumberofcriticalindustrialcomponents.TSCscanbeexpectedtocontainmeasurablelevelsofporosityandlineardetachment.Accurateandconsistentevaluationofspecimensisessentialtoensuretheintegrityofthecoatingandproperadherencetothesubstrate.Example1:Byuseofinappropriatemetallographicmethods,theapparentamountofporosityandlineardetachmentdisplayedbyagivenspecimencanbeincreased,byexcessiveedgerounding,ordecreasedbysmearingofmaterialintovoids.Thereforeinaccuratelevelsofporosityandlineardetachmentwillbereportedevenwhentheaccuracyofthemeasurementtechniqueisacceptable.Example2:Inconsistentmetallographicpreparationmethodscancausetheapparentamountofvoidstovaryexcessivelyindicatingapoorlycontrolledthermalsprayprocess,whiletheuseofconsistentpracticewillregularlydisplaythetruemicrostructureandverifytheconsistencyofthethermalsprayprocess.DuringthedevelopmentofTSCprocedures,metallographicinformationisnecessarytovalidatetheefficacyofaspecificapplication.Crosssectionsareusuallytakenperpendiculartothelongaxisofthespecimenandpreparedtorevealinformationconcerningthefollowing:Variationsinstructurefromsurfacetosubstrate,Thedistributionofunmeltedparticlesthroughoutthecoating,Thedistributionoflineardetachmentthroughoutthecoating,Thedistributionofporositythroughoutthecoating,Thepresenceofcontaminationwithinthecoating,Thethicknessofthecoating(topcoatandbondcoat,whereapplicable),Thepresenceofinterfacialcontamination,Theintegrityoftheinterfacebetweenthecoatingandsubstrate,and,Theintegrityofthecoatingmicrostructurewithrespecttochemistry.1.1Thisguidecoversrecommendationsforsectioning,cleaning,mounting,grinding,andpolishingtorevealthemicrostructuralfeaturesofthermalsprayedcoatings(TSCs)andthesubstratestowhichtheyareappliedwhenexaminedmicroscopically.Becauseofthediversityofavailableequipment,thewidevarietyofcoatingandsubstratecombinations,andthesensitivityofthesespecimenstopreparationtechnique,theexistenceofaseriesofrecommendedmethodsformetallographicpreparationofthermalsprayedcoatingspecimensishelpful.Adherencetothisguidewillprovidepractitionerswithconsistentandreproducibleresults.AdditionalinformationconcerningstandardpracticesformetallographicpreparationcanbefoundinPracticeE3.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_20
【页数】:5P.;A4
【正文语种】:英语
下载地址: 点击此处下载