Corrosion Behavior of Ti60 Alloy in Mixed Salt Spray Environment at 600 ℃

doi:10.11902/1005.4537.2025.221

Journal of Chinese Society for Corrosion and protection

2026, Vol. 46

Issue (3): 798-806 DOI: 10.11902/1005.4537.2025.221

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Corrosion Behavior of Ti60 Alloy in Mixed Salt Spray Environment at 600 ℃

LI Rui¹, YU Lixin², CUI Yu³(

), LIU Rui², MENG Fandi², LIU Li², WANG Fuhui²

^1.Testing and Analysis Centre, Hebei Normal University, Shijiazhuang 050024, China
^2.State Key Laboratory of Digital Steel, Northeastern University, Shenyang 110819, China
^3.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Cite this article:

LI Rui, YU Lixin, CUI Yu, LIU Rui, MENG Fandi, LIU Li, WANG Fuhui. Corrosion Behavior of Ti60 Alloy in Mixed Salt Spray Environment at 600 ℃. Journal of Chinese Society for Corrosion and protection, 2026, 46(3): 798-806.

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Abstract

The atmospheres above polluted ocean may contain corrosive substances such as NaCl, Na₂SO₄, and water vapor etc., which can synergistically corrode the components of aeroengine compressor in service. Hence, the corrosion behavior of Ti60 alloy a candidate material for compressor blade, induced by salt spray composed of Na₂SO₄ and Na₂SO₄-NaCl mixture respectivelyat 600 ℃ was studied via mass change measurement, scanning electron microscopy (SEM), X-ray diffractometer (XRD), and electron probe microanalyzer (EPMA). The results indicated that the corrosion process in the two salts spray environments was controlled by the diffusion process. The corrosion process was promoted by the presence of the mixture NaCl and Na₂SO₄. In the Na₂SO₄ salt spray environment, the corrosion products layer was mainly composed of TiO₂, Ti(SO₄)₂ and Na₂TiO₃. In the 75% (mass fraction) Na₂SO₄ + 25% (mass fraction) NaCl salt spray environment, intergranular corrosion was clearly observed, and the corrosion products layer was composed of Na₂TiO₃ and TiO₂. According to these results, a mechanism of synergistic action of oxidation, chlorination, and sulfidation was proposed for the corrosion of Ti60 alloy in 75%Na₂SO₄ + 25%NaCl salt spray environment.

Key words: Ti60 alloy Na₂SO₄ salt spray NaCl salt spray high temperature corrosion corrosion mechanism

Received: 11 July 2025 32134.14.1005.4537.2025.221

ZTFLH:

TG174

Fund: National Natural Science Foundation of China(U22A20111);Opening Project of Key Laboratory of Advanced Marine Materials(2024K06);Aviation Science Fund(201938050001);Doctoral Research Initial Fund(L2023B52)

Corresponding Authors: CUI Yu, E-mail: ycui@imr.ac.cn

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	LI Rui
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	MENG Fandi
	LIU Li
	WANG Fuhui

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https://www.jcscp.org/EN/10.11902/1005.4537.2025.221 OR https://www.jcscp.org/EN/Y2026/V46/I3/798

Fig.1 Metallographic structure of Ti60 alloy

Fig.2 Kinetic curves of Ti60 alloy corroded at 600 ℃ for 100 h under no salt, NaCl salt spray and 75% Na₂SO₄ + 25%NaCl salt spray environment

Fig.3 Surface morphologies of corrosion products formed on Ti60 alloy after corrosion in Na₂SO₄ salt spray environment for 1 h (a), 10 h (b) and 100 h (c)

Fig.4 Surface morphologies of corrosion products formed on Ti60 alloy after corrosion in mixed salt spray environment for 1 h (a), 10 h (b), and 100 h (c)

Fig.5 EDS spectra of points 1-7 denoted by arrows in Figs.3 and 4

Table 1 Chemical composition detected by EDS at points 1-7 indicated by arrows in Figs.3 and 4 (atomic fraction / %)

Fig.6 SEM cross-section morphologies of corrosion products formed on Ti60 alloy after corrosion in a Na₂SO₄ salt spray environment for 1 h (a), 10 h (b) and 100 h (c)

Fig.7 Cross-section morphologies of corrosion products formed on Ti60 alloy after corrosion in a mixed salt spray environment for 1 h (a), 10 h (b) and 100 h (c)

Fig.8 GAXRD patterns of Ti60 alloy exposed to Na₂SO₄ salt spray environment for 1, 10 and 100 h

Fig.9 GAXRD patterns of Ti60 alloy exposed to mixed salt spray enviornment for 1, 10 and 100 h

Fig.10 Element distribution on the cross-sectional of Ti60 alloy after exposure to a mixed salt spray environment for 100 h detected by EPMA

Fig.11 Phase stability diagram of M-Cl-O at 600 ℃ calculated using HSC Chemistry 6.1^[19-21] (M =Ti, Al, Sn, Zr)

Fig.12 Phase stability diagram of M-S-O at 600 ℃ calculated using HSC Chemistry 6.1 (M = Ti, Al, Sn, Zr)

Fig.13 Degradation mechanism of Ti60 alloy in mixed salt spray: (a) initial stage of corrosion, (b) late stage of corrosion

[1]	Yang X W, Chen Z H, Yang S S, et al. Short-term hot corrosion behavior of nickel-based single crystal superalloy N5 and its nanocrystalline coating [J]. J. Chin. Soc. Corros. Prot., 2026, 46: 252
	杨潇文, 陈泽浩, 杨莎莎等. 镍基单晶高温合金N5及其纳米晶涂层的短期热腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2026, 46: 252 doi: 10.11902/1005.4537.2025.104
[2]	Zhang J L, Fu G Y, Ning L K, et al. Hot corrosion behavior of a nickel based single crystal high temperature alloy subjected to different heat treatments [J]. J. Chin. Soc. Corros. Prot., 2024, 44: 1625
	张金龙, 付广艳, 宁礼奎等. 两种热处理状态的镍基单晶高温合金在900 ℃下(Na₂SO₄ + NaCl)混合盐中热腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2024, 44: 1625 doi: 10.11902/1005.4537.2024.027
[3]	Shu Y H, Wang F H, Wu W T. Corrosion behavior of pure Cr with a solid NaCl deposit in O₂ plus water vapor [J]. Oxid. Met., 2000, 54: 457 doi: 10.1023/A:1004690518225
[4]	Shang J, Gu Y, Zhao J, et al. Corrosion behavior in molten salts at 850 ℃ and its effect on mechanical properties of Hastelloy X alloy fabricated by additive manufacturing [J]. J. Chin. Soc. Corros. Prot., 2023, 43: 671
	尚进, 古岩, 赵京等. 增材制造Hastelloy X合金在850 ℃混合硫酸盐中热腐蚀行为及其对力学性能的影响 [J]. 中国腐蚀与防护学报, 2023, 43: 671
[5]	Lütjering G. Influence of processing on microstructure and mechanical properties of (α + β) titanium alloys [J]. Mater. Sci. Eng., 1998, 243A: 32
[6]	Evans W J. Optimising mechanical properties in alpha+beta titanium alloys [J]. Mater. Sci. Eng., 1998, 243A: 89
[7]	Eylon D, Seagle S R. Titanium technology in the USA-an overview [J]. J. Mater. Sci. Technol., 2001, 17: 439 doi: 10.1179/026708301101510014
[8]	Semiatin S L, Seetharaman V, Weiss I. Hot workability of titanium and titanium aluminide alloys-An overview [J]. Mater. Sci. Eng., 1998, 243A: 1
[9]	Shu Y H, Wang F H, Wu W T. Corrosion behavior of Ti60 alloy coated with a solid NaCl deposit in O₂ plus water vapor at 500-700 ℃ [J]. Oxid. Met., 1999, 52: 463 doi: 10.1023/A:1018864216554
[10]	Fan L, Liu L, Cui Y, et al. Effect of streaming water vapor on the corrosion behavior of Ti60 alloy under a solid NaCl deposit in water vapor at 600 ℃ [J]. Corros. Sci., 2019, 160: 108177 doi: 10.1016/j.corsci.2019.108177
[11]	Fan L, Liu L, Cao M, et al. Corrosion behavior of pure Ti under a solid NaCl deposit in a wet oxygen flow at 600 ℃ [J]. Metals, 2016, 6: 72 doi: 10.3390/met6040072
[12]	Fan L, Liu L, Yu Z F, et al. Corrosion behavior of Ti60 alloy under a solid NaCl deposit in wet oxygen flow at 600 ℃ [J]. Sci. Rep., 2016, 6: 29019 doi: 10.1038/srep29019
[13]	Ciszak C, Popa I, Brossard J M, et al. NaCl induced corrosion of Ti-6Al-4V alloy at high temperature [J]. Corros. Sci., 2016, 110: 91 doi: 10.1016/j.corsci.2016.04.016
[14]	Ciszak C, Popa I, Brossard J M, et al. NaCl-induced high-temperature corrosion of β21S Ti alloy [J]. Oxid. Met., 2017, 87: 729 doi: 10.1007/s11085-017-9775-8
[15]	Ciszak C, Abdallah I, Popa I, et al. Degradation mechanism of Ti-6Al-2Sn-4Zr-2Mo-Si alloy exposed to solid NaCl deposit at high temperature [J]. Corros. Sci., 2020, 172: 108611 doi: 10.1016/j.corsci.2020.108611
[16]	Li R, Liu L, Cui Y, et al. Corrosion behavior of Ti60 alloy under continuous NaCl solution spraying at 600 ℃ [J]. J. Mater. Sci. Technol., 2022, 124: 86 doi: 10.1016/j.jmst.2022.01.032
[17]	Li R, Liu L, Cui Y, et al. Corrosion behavior of pure Ti under continuous NaCl solution spraying at 600 ℃ [J]. npj Mater. Degrad., 2022, 6: 53 doi: 10.1038/s41529-022-00257-x
[18]	Chen W Z, Li R, Liu L, et al. Effect of NaCl-rich environment on internal corrosion for Ti60 alloy at 600 ℃ [J]. Corros. Sci., 2023, 220: 111307 doi: 10.1016/j.corsci.2023.111307
[19]	Li R, Cui Y, Liu L, et al. Corrosion behavior of Ti60 alloy in fog of NaCl solution at 600 ℃ [J]. J. Chin. Soc. Corros. Prot., 2021, 41: 595
	李蕊, 崔宇, 刘莉等. NaCl盐雾环境下Ti60合金的中温腐蚀行为 [J]. 中国腐蚀与防护学报, 2021, 41: 595
[20]	Li R, Cui Y, Liu L, et al. Corrosion behavior of pure Ti in NaCl salt spray environment at 600 ℃ [J]. Corros. Prot., 2023, 44(1): 1
	李蕊, 崔宇, 刘莉等. 纯Ti在600 ℃ NaCl盐雾环境中的腐蚀行为 [J]. 腐蚀与防护, 2023, 44(1): 1
[21]	Li R. Corrosion behavior of Ti and Ti60 alloy under continuous NaCl solution spraying at 600 ℃ [D]. Shenyang: Northeastern University, 2022
	李蕊. 600 ℃ NaCl盐雾环境下Ti和Ti60合金腐蚀机制的研究 [D]. 沈阳: 东北大学, 2022
[22]	Fan L. Investigation on corrosion behavior of Ti60 alloy under synergetic effect of solid NaCl deposit and water vapor at 600 ℃ [D]. Shenyang: Institute of Metal Research, Chinese Academy of Science, 2016
	范磊. 固态NaCl和水蒸汽协同作用下Ti60合金中温腐蚀行为的研究 [D]. 沈阳: 中国科学院金属研究所, 2016
[23]	Grabke H J, Reese E, Spiegel M. The effects of chlorides, hydrogen chloride, and sulfur dioxide in the oxidation of steels below deposits [J]. Corros. Sci., 1995, 37: 1023 doi: 10.1016/0010-938X(95)00011-8
[24]	McNallan M J, Liang W W, Kim S H, et al. Acceleration of the high temperature oxidation of metals by chlorine [A]. NACE - International Corrosion Conference Series [C]. Houston, 1983: 316
[25]	Kang Q X, Xu X T, Wang G F, et al. Hot corrosion behavior of network structured TiB_w/TA15 composite with Na₂SO₄ film at 800 ℃ [J]. Mater. Charact., 2023, 195: 112499 doi: 10.1016/j.matchar.2022.112499
[26]	Rapp R A. Hot corrosion of materials: a fluxing mechanism? [J]. Corros. Sci., 2002, 44: 209 doi: 10.1016/S0010-938X(01)00057-9
[27]	Rapp R A, Goto K. The hot corrosion of metals by molten salts [A]. ECS Proceed [C]. 1981: 159
[28]	Cao M, Liu L, Yu Z F, et al. Studies on the corrosion behavior of Fe-20Cr alloy in NaCl solution spray at 600 ℃ [J]. Corros. Sci., 2018, 133: 165 doi: 10.1016/j.corsci.2018.01.033
[29]	Bhuyan P, Sanyal S, Mitra R, et al. Grain size dependant high-temperature hot corrosion (HTHC) degradation behavior in alloy 617 during exposure in Na₂SO₄ + NaCl + V₂O₅ salt mixture [J]. J. Alloy. Compd., 2022, 914: 165262 doi: 10.1016/j.jallcom.2022.165262
[30]	Rubacha K, Godlewska E, Mars K. Behaviour of a silicon-rich coating on Ti-46Al-8Ta (at.%) in hot-corrosion environments [J]. Corros. Sci., 2017, 118: 158 doi: 10.1016/j.corsci.2017.02.002
[31]	Yuan L, Wang H M. Hot corrosion behaviors of a Cr₁₃Ni₅Si₂-based metal silicide alloy in Na₂SO₄ + 25wt.%K₂SO₄ and Na₂SO₄ + 25 wt.%NaCl molten salts [J]. Intermetallics, 2010, 18: 324 doi: 10.1016/j.intermet.2009.08.004
[32]	Douglass D L, Kofstad P, Rahmel P, et al. International workshop on high-temperature corrosion [J]. Oxid. Met., 1996, 45: 529 doi: 10.1007/BF01046850

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