Temperature Effect on Early Oxidation Behavior of NiCoCrAlY Coatings: Microstructure and Phase Transformation

doi:10.1007/s40195-021-01310-5

Abstract

Abstract:

Initial oxidation behavior of NiCoCrAlY coating prepared by arc-ion plating has been studied in air at 900, 1000 and 1100 °C. The results showed that phase transformation from transient θ-Al₂O₃ to α-Al₂O₃ was highly related to the temperature and oxidation time. The oxide scale in the initial stage was mainly composed of θ-Al₂O₃ at 900 °C. Instead, more amount of α-Al₂O₃ emerged out with increasing oxidation temperature. The elemental distribution after oxidation confirmed that faster chromium diffusion to the oxide scale played an important role in the speedy transformation from θ-Al₂O₃ to α-Al₂O₃. Y segregation at scale/coating interface resulted in less cavity formation and hence improved the oxide scale adherence.

Key words: MCrAlY coating, Phase transformation, Isothermal oxidation, Temperature effect

A. Ullah, A. Khan, Z.B. Bao, Y.F. Yang, M.M. Xu, S.L. Zhu, F.H. Wang. Temperature Effect on Early Oxidation Behavior of NiCoCrAlY Coatings: Microstructure and Phase Transformation[J]. Acta Metallurgica Sinica (English Letters), 2022, 35(6): 975-984.

Figures/Tables 9

Fig. 1 Surface a and cross-sectional b morphologies, XRD pattern c of NiCoCrAlY coating after vacuum annealing at 1000 °C for 4 h

Fig. 2. 3D topographies of NiCoCrAlY coating specimens a before oxidation and after 5-h oxidation at b 900 °C, c 1000 °C, d 1100 °C

Fig. 3 Surface morphological evolution of alumina scale on NiCoCrAlY coatings oxidized for different times at 900 °C a, d, g, 1000 °C b, e, f, 1100 °C c, f, i

Fig. 4 Oxidation kinetic curves a and square of mass gain versus oxidation time b of NiCoCrAlY coatings during oxidation in air at 900 °C, 1000 °C, 1100 °C, where kp is the slope of the fitted curve

Fig. 5 Evolution of PSLS spectra of NiCoCrAlY coatings after oxidation for 1-5 h at 900 °C a, 1000 °C b, 1100 °C c

Fig. 6 XRD patterns of NiCoCrAlY coatings after 5-h oxidation at 900 °C, 1000 °C, 1100 °C

Fig. 7 Cross-sectional morphologies of NiCoCrAlY coatings after 5-h oxidation at 900 °C a, 1000 °C b, 1100 °C c, d magnified image of c

Fig. 8 EPMA results of NiCoCrAlY coatings after 5-h oxidation at: 900 °C a, 1000 °C b, 1100 °C c

Fig. 9 STEM morphologies and SAED of the NiCoCrAlY coatings after 5-h oxidation at 900 °C a, b, 1000 °C c, d, 1100 °C e, f, g TEM elemental mapping of e

References 45

[1]	G.W. Goward, Surf. Coat. Technol. 108-109, 73 (1998).
[2]	X. Wang, L. Xin, H. Wei, S. Zhu, F. Wang, Corros. Sci. Prot. Technol. 25, 175 (2013).
[3]	M.J. Pomeroy, Mater. Des. 26, 223 (2005).
[4]	J.C. Williams, E.A. Srarke, Acta Metall. Sin. Engl. Lett. 51, 5775 (2003).
[5]	Y.L. Liu, K.L. Hou, M.Q. Ou, Y.C. Ma, K. Liu, Acta Metall. Sin. Engl. Lett. 18, 1 (2021).
[6]	X. Hou, C. Zhang, F. Wang, G. Ding, Vacuum 155, 55 (2018).
[7]	Y. Le Guével, B. Grégoire, M.J. Cristóbal, X. Feaugas, A. Oudriss, F. Pedraza, Surf. Coat. Technol. 357, 1037 (2019).
[8]	Y. Chen, X. Zhao, P. Xiao, Acta Mater. 159, 150 (2018).
[9]	P. Zhao, M. Shen, Y. Gu, S. Zhu, F. Wang, Corros. Sci. 126, 317 (2017).
[10]	M.T. Pace, R.C. Thomson, J. Wells, in Proceedings of the International Symposium on Superalloys(2008), pp. 651-660.
[11]	B.A. Pint, J.A. Haynes, K.L. Morel, J.H. Schneibel, Y. Zhang, I.G. Wright, in Proceedings of the International Symposium on Superalloys(2008), pp. 641-650.
[12]	J.A. Haynes, Y. Zhang, K.M. Cooley, L. Walker, K.S. Reeves, B.A. Pint, Surf. Coat. Technol. 188-189, 153 (2004).
[13]	K. Yuan, R.L. Peng, X.H. Li, J. Therm. Spray Technol. 25, 244 (2016).
[14]	F. Ghadami, A. Sabour Rouh Aghdam, S. Ghadami, Sci. Rep. 11, 875 (2021).
[15]	D. R.G. Achar, R. Munoz-Arroyo, L. Singheiser, W.J. Quadakkers, Surf. Coat. Technol. 187, 272 (2004).
[16]	B.G. Mendis, B. Tryon, T.M. Pollock, K.J. Hemker, Surf. Coat. Technol. 201, 3918 (2006).
[17]	G. Pulci, J. Tirillo, F. Marra, F. Sarasini, A. Bellucci, T. Valente, C. Bartuli, Metall. Mater. Trans. A Phys. Metall. Mater. Sci. 45, 1401 (2014).
[18]	C.S. Giggins, F.S. Pettit, J. Electrochem. Soc. 118, 1782 (1971).
[19]	T.J. Nijdam, L.P.H. Jeurgens, W.G. Sloof, Acta Mater. 53, 1643 (2005).
[20]	T.J. Nijdam, L.P.H. Jeurgens, J.H. Chen, W.G. Sloof, Oxid. Met. 64, 355 (2005).
[21]	T.J. Nijdam, W.G. Sloof, Oxid. Met. 69, 1 (2008).
[22]	C. Wagner, J. Electrochem. Soc. 99, 369 (1952).
[23]	Z. Liu, W. Gao, K.L. Dahm, F. Wang, Acta Mater. 46, 1691 (1998).
[24]	J. Lu, H. Zhang, Y. Chen, X. Zhao, F. Guo, P. Xiao, Corros. Sci. 159, 108145 (2019).
[25]	W. Zhao, Z. Li, B. Gleeson, in Oxidation of Metals (2013), pp. 361-381.
[26]	M.W. Brumm, H.J. Grabke, Corros. Sci. 33, 1677 (1992).
[27]	A. Hesnawi, H. Li, Z. Zhou, S. Gong, H. Xu,Vacuum 81, 947 (2007).
[28]	S.M. Jiang, X. Peng, Z.B. Bao, S.C. Liu, Q.M. Wang, J. Gong, C. Sun, Corros. Sci. 50, 3213 (2008).
[29]	J.J. Liang, H. We, G.C. Hou, Q. Zheng, X.F. Sun, H.R. Guan, Z.Q. Hu, J. Mater. Res. 23, 2264 (2008).
[30]	Y. Zhang, G. Zhang, Q. Yang, W. Cao, J. Pu, C. Zhu, Coatings 10, 376 (2020).
[31]	M.H. Guo, Q.M. Wang, P.L. Ke, J. Gong, C. Sun, R.F. Huang, L.S. Wen, Surf. Coat. Technol. 200, 3942 (2006).
[32]	K. Yuan, R. Lin Peng, X.H. Li, S. Johansson, Y.D. Wang, Surf. Coat. Technol. 261, 86 (2015).
[33]	P. Zhang, E. Sadeghimeresht, S. Chen, X.H. Li, N. Markocsan, S. Joshi, W. Chen, I.A. Buyanova, R.L. Peng, Surf. Coat. Technol. 364, 43 (2019).
[34]	A. Ullah, A. Khan, Z.B. Bao, C.T. Yu, S.L. Zhu, F.H. Wang, Surf. Coat. Technol. 404, 126441 (2020).
[35]	S.J. Wilson, J. D.C. McConnell, M.H. Stacey, J. Mater. Sci. 15, 3081 (1980).
[36]	L. Pach, R. Roy, S. Komarneni, , J. Mater. Res. 5, 278 (1990).
[37]	J.M. Alvarado-Orozco, R. Morales-Estrella, M.S. Boldrick, G. Trapaga-Martinez, B. Gleeson, J. Munoz-Saldana, Metall. Mater. Trans. A Phys. Metall. Mater. Sci. 46, 726 (2015).
[38]	Z.G. Zhang, Y. Niu, X.J. Zhang, J. Iron Steel Res. 19, 49 (2007).
[39]	Y.L. Guo, L.N. Jia, H.R. Zhang, B. Kong, Y.L. Huang, H. Zhang, Acta Metall. Sin. Engl. Lett. 31, 742 (2018).
[40]	E. Airiskallio, E. Nurmi, M.H. Heinonen, I.J. Väyrynen, K. Kokko, M. Ropo, M.P.J. Punkkinen, H. Pitkänen, M. Alatalo, J. Kollár, B. Johansson, L. Vitos,, Phys. Rev. B Condens. Matter Mater. Phys. 81, 033105 (2010).
[41]	T. Tsuchida, R. Furuichi, T. Ishii, K. Itoh, Thermochim. Acta 64, 337 (1983).
[42]	A. Khan, Z. Dong, X. Peng, Surf. Coat. Technol. 394, 125861 (2020).
[43]	A. Khan, Y. Huang, Z. Dong, X. Peng, Corros. Sci. 150, 91 (2019).
[44]	B.A. Pint, Oxid. Met. 45, 1 (1996).
[45]	J. Jedliński, Oxid. Met. 39, 55 (1993).