航空发动机叶片热障涂层技术Aircraft-Enginer-TBC-benchmark课件.ppt
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- 航空发动机 叶片 热障 涂层 技术 Aircraft_Enginer_TBC_benchmark 课件
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1、1/Confidential/1/14/2023Tech BenchmarkTurbine Blades Coating High Temp Protective Coating tech for SX Turbine Blades2/Confidential/1/14/2023Operating Condition of Turbine BladesJourney through a jet engine Fan LPC HPC HPT LPT3/Confidential/1/14/2023Data for Turbine BladesHigh Temperature:1400oCHigh
2、Pressure:40atmHigh Rotating Speed:11,000rpmCentrifugal force,airflow impact and vibrationOxidation and erosionThermal Mechanical CyclingHPT blade lifetime:Currently:16,000 hours(23years)Expected:30,000+hoursRough estimate of cost:A set of blades for HPT:1.5M gbp Refurbishment:0.3M to 1M gbp 4/Confid
3、ential/1/14/2023Outline Project Charter(N Blocker)TBC System Current Tech TechnologiesApplications Key Players Our Approaches Appendix5/Confidential/1/14/2023Project BackgroundDevelop cost-effective aluminide and TBC coating on Ni based alloys CustomerMQTD,AvaiationProject Objective:High quality&cos
4、t effective coating processOperating condition:Stage 1 Turbine Blades(HPT)Substrate:Ni-base Superalloy/SX(N5)Coating:Bond Coat(NiAl,MCrAlY,PtAl)&TGO(Al2O3)TBC(8YSZ)Evaluation Criteria:Thermal cycling testMicrostructure*Adhesive strength,Oxidation resistance,Phase stability,Thickness homogeneity,Cost
5、 estimation6/Confidential/1/14/2023TBC SystemTemperature vs.Lifetime7/Confidential/1/14/2023TBC Structure&FailureLayerFunctionRequirementt/mMaterialTechniqueTBC top coatThermally insulatingLow k,high CTE,porous morphology100 400YSZAPS,EBPVDTGOOxidation resistanceDense alumina1-10Al2O3-Bond CoatAlumi
6、nide,Solid adhesion,transitionGradient layer,Phase stability50-100NiAlPtAlMCrAlYCVD,PackCem Plating,CVD VPS,HVOF,EB Rupture:CTE mismatch,sharp thermal gradient,thermomechanical cycling Delamination:TGO,degradation of bond coating,Incipient crack nucleate&grow:thermomechanical fatigue Inclusion:Proce
7、ssing method derived FOD(foreign object damage),CMAS(Calcia,Magnesia,Alumina and Silica)8/Confidential/1/14/2023EB-PVDAdvantagesStrong adherence,wear resistanceDense,atom/ion evaporationColumnar grainDrawbacksHigh tempVacuumHigh costApplicationsTopcoat/MCrAlYTool coatingFunctional film 9/Confidentia
8、l/1/14/2023Plasma SprayingAdvantagesLamellar stripLow kComposition controlThickness capability DrawbacksPartially melted particleCracksPorositiesApplicationsTopcoat APSBond coat LPPSCorrosion/Wear resistance 10/Confidential/1/14/2023Front RunnersUSAUCSB*Novel TBC material,microstructureUSAUniv of Co
9、nnecticut*Spallation model,lifetime predictionUSAUniv of Pittsburgh Failure analysis,bondcoat modificationGermanyDLR-German Aerospace CenterMorphology,porosityUkrainePEW,Paton Electric Weld.InstProcess para,materialUSAUniv of Virginia*EBDVD,systematical exp&simulationAcademicUSAGE Aircraft EngineEBP
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