先进燃机材料和涂层.pdf

《先进燃机材料和涂层.pdf》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、GER-3569FADVANCEDGASTURBINEMATERIALSANDCOATINGSP.W.SchilkeGEPowerSystemsSchenectady,NYINTRODUCTIONfromaircraftorsteamturbineapplications.However,manytimestheuniquerequirementsAdvancedGEmaterialsarepavingthewayforofheavy-dutygaspathcomponentsdemandspe-dramaticimprovementsingasturbines—cialmaterials

2、andprocesses.Workingwithalloyimprovementsthataresettingnewrecordsinandcomponentsuppliersinconjunctionwithgivingcustomersthemostfuel-efficientpowerinternalGEdevelopmentprograms,alloysandgenerationsystemsavailable.Combined-cycleprocesseshavebeendevelopedtomeettheefficienciesashighas60%arenowachievab

3、leneedsofthegasturbineindustry.becauseofincreasedfiringtemperaturecoupledThefirstphaseofamaterialsdevelopmentwithmoreefficientcomponentandsystemprogramisexpensiveandtime-consuming.First,designs.OngoingGEdevelopmentsnownewideasandemergingdevelopmentsarepromisethatthecomingdecadewillwitnessscreenedt

4、oselecttheoneortwowiththebestcontinuedgrowthofgasturbineswithhigherfir-potentialforsatisfyingthematerialdesigngoals.ingtemperatures,pressuresandoutputs.ExtensivetestingfollowstoensurethattheThispaperdescribestheevolutionofsolu-materialswillperformsatisfactorilyinheavy-dutytionstowhatusedtobeincomp

5、atiblemarketgasturbinesfortensofthousandsofhours.demands:highfiringtemperaturesandlongLong-termcreeptestingattheexpectedoperat-life,corrosionprotectionfromcontaminatedingtemperaturesofthematerialisconductedtofuelsandair,andhigherefficiencywithfuelcharacterizealloyperformance.flexibility.Itconcentr

6、atesonadvancesmadeinAdditionally,laboratoryevaluationstypicallythehotgaspathcomponentsbecausetheyareincludeitemssuchastensile,rupture,low-andgenerallythemostcriticalpartofthegastur-high-cyclefatigue,thermalmechanicalfatigue,bine.Improvementsinsuperalloysandprocess-toughness,corrosion/oxidationresi

7、stance,pro-ingnowpermitthehotgaspathcomponentstoduction/processingtrialsandcompletephysicaloperateinadvancedgasturbinesfiringatpropertydeterminations.Thisphaseoftestingincreasedtemperaturesformanythousandsofcanla