Studies on the Oxidation Behavior of a Designed Nanocrystalline Coating on K38 Alloy at 1050 °C

A new framework for a nanocrystalline coating system is established and prepared to study the oxidation behavior with a significant difference in elemental composition. K38 superalloy is selected as a substrate alloy and the composition of the 2nd-generation single-crystal superalloy Rene N5 is used as the sputtered nanocrystalline coating. The oxidation behavior of the newly designed nanocrystalline coating is comparatively studied with the original K38 coating and its substrate alloy at 1050 °C for 500 h. Moreover, microstructure evolution on the interface is used for studying the influence of element interdiffusion behavior on the substrate alloy. Results show that the nanocrystalline coatings increase the oxidation performance of alloys at 1050 °C for 100 h. The sputtered SN-N5 nanocrystalline coating exhibits the best oxidation resistance among the three groups of specimens for 500 h. Interdiffusion occurred and is observed on the SN-N5 coating after long-term oxidation. However, no topologically close-packed phases participated in the substrate alloy.

[1]  Fu-hui Wang,et al.  An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy , 2021 .

[2]  Siqian Gong,et al.  Experimental study on fabricating micro-holes in DD5 single-crystal nickel-based superalloy using electrical discharge drilling , 2020, Archives of Civil and Mechanical Engineering.

[3]  Fu-hui Wang,et al.  Oxidation behavior of Al/Y co-modified nanocrystalline coatings with different Al content on a nickel-based single-crystal superalloy , 2020 .

[4]  Fu-hui Wang,et al.  Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation , 2020 .

[5]  Y. F. Yang,et al.  Microstructure and cyclic oxidation of a Hf-doped (Ni,Pt)Al coating for single-crystal superalloys , 2020, Journal of Materials Science.

[6]  Fu-hui Wang,et al.  Self-healing metal-enamel composite coating and its protection for TiAl alloy against oxidation under thermal shock in NaCl solution , 2020 .

[7]  S. Tian,et al.  Creep damage of a high Mo single crystal nickel-based superalloy , 2020 .

[8]  P. Ren,et al.  Modification of NiCoCrAlY with Pt: Part I. Effect of Pt depositing location and cyclic oxidation performance , 2019, Journal of Materials Science & Technology.

[9]  Fu-hui Wang,et al.  Oxidation of duplex coatings with different thickness ratio of the inner nanocrystalline layer to the outer NiCrAlY one , 2018, Corrosion Science.

[10]  Ying Chen,et al.  Effect of microstructure on early oxidation of MCrAlY coatings , 2018, Acta Materialia.

[11]  Guangwen Zhou,et al.  YSZ/NiCrAlY interface oxidation of APS thermal barrier coatings , 2018, Corrosion Science.

[12]  Ruirun Chen,et al.  Cyclic oxidation behavior and oxide scale adhesion of Al/NiCrAlY coating on pure titanium alloy , 2017 .

[13]  Fu-hui Wang,et al.  Diffusion of Ta and its influence on oxidation behavior of nanocrystalline coatings with different Ta, Y and Al contents , 2017 .

[14]  Fu-hui Wang,et al.  Hot corrosion of arc ion plating NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy , 2017 .

[15]  Fu-hui Wang,et al.  Effects of surface finish of single crystal superalloy substrate on cyclic thermal oxidation of its nanocrystalline coating , 2016 .

[16]  Fu-hui Wang,et al.  The effect of yttrium addition on oxidation of a sputtered nanocrystalline coating with moderate amount of tantalum in composition , 2016 .

[17]  Fu-hui Wang,et al.  Microstructure and oxidation behavior of a Ni+CrAlYSiHfN/AlN multilayer coating fabricated by reactive magnetron sputtering , 2016 .

[18]  Fu-hui Wang,et al.  High temperature oxidation of NiCrAlY, nanocrystalline and enamel-metal nano-composite coatings under thermal shock , 2015 .

[19]  Fu-hui Wang,et al.  Comparative study of oxidation and interdiffusion behavior of AIP NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy , 2015 .

[20]  Fu-hui Wang,et al.  Ta effect on oxidation of a nickel-based single-crystal superalloy and its sputtered nanocrystalline coating at 900–1100 °C , 2015 .

[21]  P. Xiao,et al.  Characterization and understanding of residual stresses in a NiCoCrAlY bond coat for thermal barrier coating application , 2015 .

[22]  Fu-hui Wang,et al.  Yttria partially stabilised zirconia as diffusion barrier between NiCrAlY and Ni-base single crystal Rene N5 superalloy , 2015 .

[23]  Fu-hui Wang,et al.  Characterization and Oxidation Behavior of a Sputtered Nanocomposite Ni+CrAlYSiHfN Coating , 2015 .

[24]  P. Xiao,et al.  Effect of platinum addition on oxidation behaviour of γ/γ′ nickel aluminide , 2015 .

[25]  Hui Peng,et al.  Oxidation and microstructure evolution of Al–Si coated Ni3Al based single crystal superalloy with high Mo content , 2015 .

[26]  Wei Jiang,et al.  Hot Corrosion Behavior of Sputtered Nanocrystalline Coating with Yttrium Addition at 900 °C , 2014, Materials.

[27]  Fu-hui Wang,et al.  Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy , 2014 .

[28]  P. Xiao,et al.  Study of the effect of laser treatment on the initial oxidation behaviour of Al‐coated NiCrAlY bond‐coat , 2013 .

[29]  Fu-hui Wang,et al.  Preparation and oxidation behaviour of nanocrystalline Ni + CrAlYSiN composite coating with AlN diffusion barrier on Ni-based superalloy K417 , 2012 .

[30]  Fu-hui Wang,et al.  High-temperature corrosion behavior of sputtered K38 nanocrystalline coatings with and without yttrium addition in molten sulfate at 900 °C , 2011 .

[31]  Fu-hui Wang,et al.  Oxidation Behavior of K38 Superalloy with Different Amounts of Yttrium Addition at 1173K in Air , 2011 .

[32]  Y. Sohn,et al.  Transmission electron microscopy observations on the phase composition and microstructure of the oxidation scale grown on as-polished and yttrium-implanted β-NiAl , 2010 .

[33]  B. Jodoin,et al.  Oxidation behaviour of CoNiCrAlY bond coats produced by plasma, HVOF and cold gas dynamic spraying , 2010 .

[34]  Yanchun Zhou,et al.  Oxidation of pre-oxidized GH128 alloy implanted with Ce+ at 1 000 °C , 2008 .

[35]  Ying Zhang,et al.  Comparison of the cyclic oxidation behavior of β-NiAl, β-NiPtAl and γ–γ′ NiPtAl coatings on various superalloys , 2007 .

[36]  D. Clarke,et al.  On the rumpling mechanism in nickel-aluminide coatings Part II: characterization of surface undulations and bond coat swelling , 2004 .

[37]  Carlos G. Levi,et al.  MATERIALS DESIGN FOR THE NEXT GENERATION THERMAL BARRIER COATINGS , 2003 .

[38]  G. W. Goward,et al.  Progress in coatings for gas turbine airfoils , 1998 .

[39]  B. Pint,et al.  Grain Boundary Segregation of Cation Dopants in α ‐ Al2 O 3 Scales , 1998 .

[40]  Jian Lu,et al.  The influences of heat treatments and interdiffusion on the adhesion of plasma-sprayed NiCrAlY coatings , 1996 .

[41]  S. Putatunda,et al.  Tensile behavior of a new single-crystal nickel-based superalloy (CMSX-4) at room and elevated temperatures , 1994, Journal of Materials Engineering and Performance.

[42]  Zhang Lixin,et al.  High-temperature oxidation resistance of sputtered micro-grain superalloy K38G , 1992 .

[43]  J. Martin,et al.  Surface recrystallization in a single crystal nickel-based superalloy , 1984 .

[44]  Fu-hui Wang,et al.  A duplex nanocrystalline coating for high-temperature applications on single-crystal superalloy , 2016 .