Corrosion Behaviors of Nitride Coatings on Titanium Alloy in NaCl-Induced Hot Corrosion

doi:10.1007/s40195-021-01264-8

Abstract

Abstract:

TiN and TiAlN coatings were deposited by arc ion plating on titanium alloys to study their hot corrosion resistance when they were exposed to NaCl at 600 °C. The microstructure and corrosion behaviors of nitride coatings were studied using scanning electron microscope, X-ray diffraction, electro-probe microanalyzer and X-ray photoelectron spectroscopy. The results showed that nitride coatings with the different compositions and the ones with the same composition but different thicknesses presented different hot corrosion resistance. TiN and thin TiAlN coatings showed poor corrosion resistance. Serious internal oxidation attacked the alloy substrate. Their corrosion products were mainly consisted of non-protective TiO₂ and sodium salt. By contrast, the thick TiAlN coating presented outstanding corrosion resistance. Besides sodium salt, the corrosion products were composed of protective Al₂O₃. The increasing thickness of TiAlN significantly enhanced the hot corrosion resistance. The corrosion mechanisms of alloy, TiN and TiAlN coatings were discussed in detail.

Key words: Titanium alloy, Nitride, Coating, Hot corrosion resistance

Mingming Zhang, Yipeng Feng, Yahui Wang, Yunsong Niu, Li Xin, Yongfeng Li, Jianxiu Su, Shenglong Zhu, Fuhui Wang. Corrosion Behaviors of Nitride Coatings on Titanium Alloy in NaCl-Induced Hot Corrosion[J]. Acta Metallurgica Sinica (English Letters), 2021, 34(10): 1434-1446.

Figures/Tables 15

Fig. 1 Schematic illustration on the procedure of hot corrosion test

Fig. 2 XRD patterns of (a) 4 μm thick TiAlN, (b) 12 μm thick TiAlN, (c) TiN coatings

Fig. 3 Surface and cross-sectional SEM morphologies of (a) and (a’) 4 μm thick TiAlN, (b) and (b’) 12 μm thick TiAlN, (c) (c’) TiN coatings

Fig. 4 Cross-sectional SEM fracture morphologies of (a) 4 μm thick TiAlN, (b) TiN, (c) 12 μm thick coatings

Fig. 5 Hot corrosion kinetic curves of bare TC4 substrate and coating samples exposed to solid NaCl at 600 °C

Fig. 6 Macroscopic surface morphologies of (a) bare TC4, (b) TiN, (c) 4 μm thick TiAlN, (d) 12 μm thick TiAlN coatings samples after hot corrosion tests

Fig. 7 (a) Surface and (b) cross-sectional SEM morphologies of TC4 substrate after hot corrosion exposed to NaCl at 600 °C for 20 h

Fig. 8 (a, b) Surface and (c-e) cross-sectional SEM morphologies of TiN coating after hot corrosion exposed to NaCl at 600 °C for 100 h

Fig. 9 (a) Surface and (b) cross-sectional SEM morphologies of 12 μm thick TiAlN coating after hot corrosion exposed to NaCl at 600 °C for 100 h

Fig. 10 EPMA maps of 12 μm thick TiAlN coating after hot corrosion exposed to NaCl at 600 °C for 100 h

Fig. 11 (a, b) Surface and (c-f) cross-sectional SEM morphologies of 4 μm thick TiAlN coating after hot corrosion exposed to NaCl at 600 °C for 100 h

Fig. 12 XRD patterns of (a) TC4, (b) 4 μm thick TiAlN, (c) TiN, (d) 12 μm thick TiAlN coatings after hot corrosion exposed to NaCl at 600 °C

Fig. 13 XPS analyses for the corrosion product layer of 12 μm thick TiAlN coating after hot corrosion exposed to NaCl at 600 °C for 100 h

Fig. 14 Schematic diagrams of corrosion processes of TiN coating exposed to NaCl at 600 °C: (a) the inward diffusion of O2 and the internal oxidation at TiN/TC4 interface, (b) the inward transport of NaCl, (c) the generation of corrosion product at TiN/TC4 interface and the release of Cl2

Fig. 15 Schematic diagrams of corrosion processes of 12 μm thick TiAlN coating exposed to NaCl at 600 °C: (a) the generation of mixed oxides and the barrier of Al2O3 against O2 inward diffusing, (b) the corrosion product forming on the surface of TiAlN and the outward volatilization of Cl2

References 47

[1]	J. Liu, S.S. Zhu, X. Deng, Z.P. Wang, Z. Qu, Acta Metall. Sin. -Engl. Lett. 33, 459 (2020)
[2]	T. Zhou, Z.B. Qin, Q. Luo, Q. Zhang, B. Shen, W.B. Hu, L. Liu, Acta Metall. Sin. -Engl. Lett. 31, 1109 (2018)
[3]	Y. Su, S.C. Luo, L. Meng, P. Gao, Z.M. Wang, Acta Metall. Sin. -Engl. Lett. 33, 774 (2020)
[4]	Y. Han, H.R. Wang, Y.D. Cao, W.T. Hou, S.J. Li, Acta Metall. Sin. -Engl. Lett. 32, 1007 (2019)
[5]	Z. Yao, M. Marck, Mater. Sci. Eng. A 192, 994 (1995)
[6]	C. Ciszak, I. Popa, J.M. Brossard, D. Monceau, S. Chevalier, Corros. Sci. 110, 91 (2016) DOI URL
[7]	L. Yang, M. Chen, J. Wang, Y. Qiao, P. Guo, S. Zhu, F. Wang, J. Mater. Sci. Technol. 45, 49 (2020) DOI URL
[8]	H. Lin, W.P. Liang, Y.L. Jia, Q. Miao, R.Y. Hua, Z. Ding, L.J. Yu, Appl. Surf. Sci. 487, 868 (2019) DOI URL
[9]	D.L. Wu, S.M. Jiang, Q.X. Fan, J. Gong, C. Sun, Acta Metall. Sin. -Engl. Lett. 27, 627 (2014)
[10]	J. Wang, L. Yang, S. Yang, Y. Jia, M. Chen, Y. Qiao, P. Guo, S. Zhu, F. Wang, Materials 14, 202 (2021)
[11]	L. Yang, J. Wang, R. Yang, S. Yang, Y. Jia, M. Chen, Y. Qiao, P. Guo, S. Zhu, F. Wang, Corros. Sci. 180, 109182 (2021)
[12]	S. Yang, L. Yang, M. Chen, S. Zhu, F. Wang, Acta Mater. 205, 116 (2021)
[13]	L.K. Wu, J.J. Wu, W.Y. Wu, H.J. Yan, M.Y. Jiang, F.H. Cao, Corros. Sci. 174, 108827 (2020)
[14]	W.B. Li, L.L. Liu, Y.F. Yang, S.L. Zhu, F.H. Wang, Acta Metall. Sin. -Engl. Lett. 32, 599 (2019)
[15]	A. Shamsipoor, M. Farvizi, M. Razavi, A. Keyvani, B. Mousavi, W. Pan, Ceram. Int. 47, 2347 (2021) DOI URL
[16]	X.X. Ma, Y.D. He, J.P. Lin, D.E. Wang, J. Zhang, Surf. Coat. Technol. 206, 2690 (2012) DOI URL
[17]	R.Z. Li, S.H. Wang, D.P. Zhou, J.B. Pu, M. Yu, W.M. Guo, Corros. Sci. 174, 108794 (2020)
[18]	Y.M. Liao, M. Feng, M.H. Chen, Z. Geng, Y. Liu, F.H. Wang, S.L. Zhu, Acta Metall. Sin. 55, 229 (2019)
[19]	Y.M. Liao, B. Zhang, M.H. Chen, M. Feng, J.L. Wang, S.L. Zhu, F.H. Wang, Corros. Sci. 167, 108526 (2020)
[20]	K. Rubacha, E. Godlewska, K. Mars, Corros. Sci. 118, 158 (2017) DOI URL
[21]	Y.Q. Qiao, J.P. Kong, X.P. Guo, Ceram. Int. 44, 7978 (2018) DOI URL
[22]	H.Y. Wang, X. Zhang, Z. Xu, H. Wang, C.S. Zhu, Corros. Sci. 147, 313 (2019) DOI URL
[23]	S.A. Azarmehr, K. Shirvani, A. Solimani, M. Schutze, M.C. Galetz, Surf. Coat. Technol. 362, 252 (2019) DOI URL
[24]	M.Y. Chen, K.L. Feng, M.F. Li, C.G. Zhou, Corros. Sci. 166, 108431 (2020)
[25]	R.D. Liu, S.M. Jiang, H.J. Yu, J. Gong, C. Sun, Corros. Sci. 104, 162 (2016) DOI URL
[26]	H.Y. He, Z.J. Liu, W. Wang, C.G. Zhou, Corros. Sci. 100, 466 (2015) DOI URL
[27]	Y. Du, C. Wang, L.L. Yang, S.L. Zhu, F.H. Wang, Corros. Sci. 169, 108599 (2020)
[28]	Y.C. Fang, X.F. Cui, G. Jin, E.B. Liu, D. Zhang, X. Wen, Q.B. Mi, Surf. Coat. Technol. 399, 126715 (2020)
[29]	Y.D. Liu, J. Sun, Z.L. Pei, W. Li, J.H. Liu, J. Gong, C. Sun, Corros. Sci. 167, 108486 (2020)
[30]	Y. Jia, S. Zhu, Z. Liu, L. Yang, M. Shen, F. Wang, Corros. Sci. 180, 109184 (2021)
[31]	Y. Zhang, Z.R. Liu, D.W. Yuan, Q. Shao, J.H. Chen, C.L. Wu, Z.L. Zhang, Acta Metall. Sin. -Engl. Lett. 32, 1099 (2019)
[32]	H.C. Barshilia, M.S. Prakash, A. Poojari, K.S. Rajam, Thin Solid Films 460, 133 (2004)
[33]	F.Q. Lang, Z.M. Yu, Surf. Coat. Technol. 145, 80 (2001) DOI URL
[34]	H.A. Jehn, Surf. Coat. Technol. 125, 212 (2000) DOI URL
[35]	J. Barranco, F. Barreras, A. Lozano, M. Maza, J. Power Sources 196, 4283 (2011)
[36]	Y. Yang, Y.X. Xu, L. Chen, P.H. Mayrhofer, Sur. Coat. Technol. 328, 428 (2017) DOI URL
[37]	D. Fan, H. Lei, C.Q. Guo, D.L. Qi, J. Gong, C. Sun, Acta Metall. Sin. -Engl. Lett. 31, 329 (2018)
[38]	D.Y. Zheng, S.L. Zhu, F.H. Wang, Surf. Coat. Technol. 201, 5859 (2007) DOI URL
[39]	M.P. Wojtan, Thin Solid Films 616, 437 (2016)
[40]	Z.F. Lei, Y.S. Liu, F. Ma, Z.X. Song, Y.H. Li, Vacuum 127, 22 (2016)
[41]	A. Richthofen, R. Domnick, Thin Solid Films 283, 37 (1996)
[42]	L. Fan, L. Liu, Y. Cui, M. Cao, Z.F. Yu, E.E. Oguzie, Y. Li, F.H. Wang, Corros. Sci. 160, 108177 (2019)
[43]	M.M. Zhang, Y.S. Niu, L. Xin, J.X. Su, Y.F. Li, T.T. Wu, H.Y. Zhao, Y.Q. Zhang, W.L. Xie, S.L. Zhu, F.H. Wang, Ceram. Int. 46, 19274 (2020)
[44]	J.L. Lin, W.D. Sproul, J.J. Moore, Mater. Lett. 89, 55 (2012) DOI URL
[45]	L. Chen, K.K. Chang, Y. Du, J.R. Li, M.J. Wu, Thin Solid Films 519, 3762 (2011)
[46]	M. Ahlgren, H. Blomqvist, Surf. Coat. Technol. 200, 157 (2005) DOI URL
[47]	M. Oden, C. Ericsson, G. Hakansson, H. Ljungcrantz, Surf. Coat. Technol. 114, 39 (1999) DOI URL