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THE EFFECT OF Y-IMPLANTATION ON HIGH TEMPERATURE OXIDATION BEHAVIOR OF ALUMINIZED Ni-BASE ALLOY |
Xin Li;Li Meishuan;Li Tiefan |
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Abstract The influences of implanted yttrium at doses of 1×10 17; 1×10 16;1×10 15Y+/cm2 on the high temperature oxidation behaviro of aluminized Ni-15Cr-6Al alloy were studied by electric thermal balance ,scanning electron microscopy(SEM)and X-ray diffraction(XRD).The results indicated that Y-implantation at the three doses had no effects on oxidation kinetics of the alloy.However,ion implantation dose of 1× 10 17 Y+/cm2 changed the oxide morphology and facilitated plastic deformation of the oxide scale, thus it altered the ways of stress relaxation in the scale and improved the scale adhension.The change of the oxide morphology might result from the change of growth mechanism of the oxide scale, Ion implantation doses of 1×10 16 1×10 15Y+/cm2 had only a little or no effect on the oxide scale morphology.
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Received: 25 February 1996
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1WhittlePP,StringerJJ.Phil.Thans.R.Soc.London;1980,A295:3092HuntzAM.Mat.Sci.Eng.;1987;87:2513StottFH;WoodDC.idid,1987,87:2674JedlinskiJ,BorchardtG.Oxid.Met.;1991,36:3715ChoquetPSMevrelR.Mat.Sci.Eng,1989,A120:1536KofstadP.Oxid.Met,1985;24:2657RybickiGC,SmialekJL.Oxid.Met,1989,31:2758李铁藩,辛丽,李美栓.离子注入钇对镍基合金渗铝层氧化膜生长应力的影响(待发表文章) |
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