采用固相反应法合成了5mol％ Y2O3与5mol％ Gd2O3共掺杂SrZrO3(Sr(Zr0.9Y0.05Gd0.05)O2.95,SZYG)粉末.采用X射线衍射(XRD)和差示扫描量热仪(DSC)分别研究了SZYG粉末在1450℃长期热处理后以及200～1400℃范围内的相稳定性.采用高温热膨胀仪测量了SZYG块材的热膨胀系数,结果表明:通过Y2O3与Gd2O3共掺杂改性可以明显抑制SrZrO3的相转变.在1000℃下SZYG块材的热导率是～1.36 W/(m.K),与SrZrO3和8YSZ块材相比降低～35％ SZYG分别与8YSZ和Al2O3在1250℃热处理24h表现出很好的化学相容性.
参考文献
| [1] | Milller R.Thermal barrier coatings for aircraft engines:history and directions.J.Therm.Spray Technol.,1997,6(1):35-42. |
| [2] | Padture NP,Gell M,Jordan E.Thermal barrier coatings for gas-turbine engine applications.Science,2002,296(5566):280-284. |
| [3] | Schulz U,Leyens C,Fritscher K,et al.Some recent trends in research and technology of advanced thermal barrier coatings.Aerosol Sci.Technol.,2003,7(1):73-80. |
| [4] | Rabiei A,Evans A.Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings.Acta Mater.,2000,48(15):3963-3976. |
| [5] | Clark D R,Levi C G.Materials design for the next generation thermal banier coatings.Annu.Rev.Mater.Res.,2003,33:383-417. |
| [6] | Ilavsky J,Stalick J.Phase composition and its changes during annealing of plasma-sprayed YSZ.Surf.Coat.Technol.,2000,127(2/3):120-129. |
| [7] | Schulz U.Phase transformation in EB-PVD yttria partially stabilized zirconia thermal barrier coatings during annealing.J.Am.Ceram.Soc.,2000,83(4):904-910. |
| [8] | Levi CG.Emerging materials and processes for thermal barrier systems.Curr.Opin.Solid State Mater.Sci.,2004,8(1):77-91. |
| [9] | Zhu D,Fox DS,Bansal NP,et al.Advanced Oxide Material Systems for 1650℃ Thermal/environmental Barrier Coating Applications.NASA/TM-2004-213219,2004. |
| [10] | Suresh G,Seenivasan G,Krishnaiah M,et al.Investigation of the thermal conductivity of selected compounds of lanthanum,samarium and europium.J.Alloy Comnpounds,1998,269(1/2):L9-L12. |
| [11] | Maloney M.Thermal Barrier Coating Systems and Materials.US Patent 6177200B 1,2001. |
| [12] | Vassen R,Cao X,Tietz F,et al.Zirconates as new materials for thermal barrier coatings.J.Am.Ceram.Soc.,2000,83(8):2023-2028. |
| [13] | Lehmann H,Pitzer D,Pracht G,et al.Thermal conductivity and thermal expansion coefficients of the lanthanum rare-earth-element zirconate system.J.Am.Ceram.Soc.,2003,86(8):1338-1344. |
| [14] | Padture N,Klemens P.Low thermal conductivity in garnets.J.Am.Ceram.Soc.,1997,80(4):1018-1020. |
| [15] | Sudre O,Cheung J,Marshall D,et al.Thermal Insulation Coatings of LaPO4.The 25th Annual International Conference on Composites,Advance Ceramics,Materials,and Structures,2001:367-374. |
| [16] | Gadow R,Lischka M.Lanthanum hexaaluminate-novel thermal barrier coatings for gas turbine applications-materials and process development.Surf.Coat.Technol.,2002,151-152:392-399. |
| [17] | Ma W,Gong S,Xu H,et al.The thermal cycling behavior of lanthanum cerium oxide thermal barrier coating prepared by EB-PVD.Surf.Coat.Technol.,2006,200(16/17):5113-5118. |
| [18] | Cao X,Vassen R,Fischer W,et al.Lanthanum-cerium oxide as a thermal barrier-coating material for high-temperature applications.Adv.Mater.,2003,15(17):1438-1442. |
| [19] | Ma W,Mack D,Vassen R,et al.Perovskite-type strontium zirconate as a new material for thermal barrier coatings.J.Am.Ceram.Soc.,2008,91(8):2630-2635. |
| [20] | Howard CJ,Knight KS,Kennedy B,et al.The structural phase transitions in stronatium zirconate revisited.J.Phys.:Condens.Matter,2000,12(45):L677-L683. |
| [21] | Carlsson L.High-temperature phase transitions in SrZrO3.Acta Cryst.,1967,23:901-905. |
| [22] | Zhao Y,Weidner DJ.Thermal expansion of SrZrO3 and BaZrO3 perovskites.Phys.Chem.Minerals,1991,18(5):294-301. |
| [23] | Ligny D,Richet P.High-temperature heat capacity and thermal expansion of SrTiO3 and SrZrO3 perovskites.Phys.Rev.B,1996,53(6):3013-3022. |
| [24] | Ma W,Mack D,Malzbender J,et al.Yb2O3 and Gd2O3 doped strontium zirconate for thermal barrier coatings.J.Eur.Ceram.Soc.,2008,28(16):3071-3081. |
| [25] | Hayashi H,Saitou T,Maruyama N,et al.Thermal expansion coefficient of yttria stabilized zirconia for various yttria contents.Solid State Ionics,2005,176(5/6):613-619. |
| [26] | Liu ZG,Ouyang JH,Zhou Y.Influence of gadolinia on thermal expansion property of ZrO2-4.5mol％Y2O3 ceramics.J.Alloys Compd,2009,473(1/2):L17-L19. |
| [27] | Schlichting K,Padture N,Klemens P.Thermal conductivity of dense and porous yttria-stabilized zirconia.J.Mater.Sci.,2001,36(12):3003-3010. |
| [28] | Zhu D,Miller R.Thermal Conductivity and Sintering Behavior of Advanced Thermal Barrier Coatings.NASA TM-2002-211481,2002. |
| [29] | Zhu D,Miller R.Development of Advanced Low Conductivity Thermal Barrier Coatings.NASA TM-2004-212961,2004. |
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