Hot Corrosion Behavior of Pt Modified AlCoCrFeNi2.1 Eutectic High Entropy Alloy

doi:10.11902/1005.4537.2024.134

Journal of Chinese Society for Corrosion and protection

2025, Vol. 45

Issue (1): 115-126 DOI: 10.11902/1005.4537.2024.134

Current Issue | Archive | Adv Search

Hot Corrosion Behavior of Pt Modified AlCoCrFeNi_2.1 Eutectic High Entropy Alloy

HUANG Qinying, LI Yuzhuo, YANG Yingfei, REN Pan(

), WANG Qiwei

School of Chemistry and Materials, Jinan University, Guangzhou 510632, China

Cite this article:

HUANG Qinying, LI Yuzhuo, YANG Yingfei, REN Pan, WANG Qiwei. Hot Corrosion Behavior of Pt Modified AlCoCrFeNi_2.1 Eutectic High Entropy Alloy. Journal of Chinese Society for Corrosion and protection, 2025, 45(1): 115-126.

Download:

HTML

PDF(30416KB)
Export: BibTeX | EndNote (RIS)

Abstract

Eutectic high-entropy alloy, YHf-AlCoCrFeNi_2.1 (YHf-EHEA) was prepared using vacuum arc melting, and then the YHf-EHEA was surface modified via Pt electroplating and followed by a diffusion treatment at 1080 ^oC also in vacuum, then after, the Pt-modified alloy maned as YHfPtAlCoCrFeNi_2.1 (YHfPt-EHEA). Afterwards, the hot corrosion behavior of the two EHEAs in mixed salts Na₂SO₄/K₂SO₄ (mass fraction 75%:25%) at 800 ^oC and Na₂SO₄/NaCl (mass fraction 75%:25%) at 900 ^oC respectively was assessed by means of XRD, SEM and EPMA. The results indicate that the oxide scale formed on YHf-EHEA peeled off in a large area due to hot corrosion in Na₂SO₄/K₂SO₄ at 800 ^oC, while the oxide scale formed on YHfPt-EHEA remains intact and continuous in the same hot corrosion situation. During hot corrosion in Na₂SO₄/NaCl mixed salt at 900 ^oC, O and S diffuse rapidly into YHf-EHEA and form a number of oxides and sulfides within the alloy, which accelerate the cracking and peeling behavior of oxide scale. In contrast, after being Pt-modified the YHfPt-EHEA exhibits significant inhibition effect to the inward diffusion of O and S into the alloy, and therewith suppresses the hot corrosion process.

Key words: hot corrosion eutectic high-entropy alloys reactive element Pt modification

Received: 24 April 2024 32134.14.1005.4537.2024.134

ZTFLH:

TG174

Fund: Basic and Applied Basic Research Foundation of Guangzhou(202201010206)

Corresponding Authors: REN Pan, E-mail: renpan@jnu.edu.cn

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	HUANG Qinying
	LI Yuzhuo
	YANG Yingfei
	REN Pan
	WANG Qiwei

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2024.134 OR https://www.jcscp.org/EN/Y2025/V45/I1/115

Fig.1 Microstructure and composition analysises of YHf-EHEA and YHfPt-EHEA samples: (a) SEM morphology of YHf-EHEA after melting, (b) surface morphology of YHfPt-EHEA electroplated with Pt, (c) cross-sectional morphology of YHfPt-EHEA after vacuum annealing, (d) XRD patterns of two alloys, (e) elemental linear distributions of YHfPt-EHEA after annealing at 1080 ^oC for 3 h

Fig.2 Mass change curves (a) and XRD patterns (b) of two EHEA samples during hot corrosion for 200 h in mixed salt (Na₂SO₄ + K₂SO₄) at 800 ^oC

Fig.3 Surface morphologies of YHf-EHEA (a, b) and YHfPt-EHEA (c, d) after hot corrosion for 200 h in mixed salt (Na₂SO₄ + K₂SO₄) at 800 ^oC

Fig.4 Cross-sectional morphologies of YHf-EHEA (a, b) and YHfPt-EHEA (c, d) after hot corrosion for 200 h in mixed salt (Na₂SO₄ + K₂SO₄) at 800 ^oC

Fig.5 Distributions of main elements on the cross-sections of YHf-EHEA (a) and YHfPt-EHEA (b) after hot corrosion for 200 h at 800 ^oC in mixed salt (Na₂SO₄ + K₂SO₄)

Fig.6 XRD patterns of YHf-EHEA and YHfPt-EHEA after hot corrosion for 20 h in mixed salt (Na₂SO₄ +NaCl) at 900 ^oC

Fig.7 Macroscopic morphologies of YHf-EHEA (a, b) and YHfPt-EHEA (c, d) after hot corrosion in mixed salt (Na₂SO₄ + NaCl) at 900 ^oC for 0 h (a, c) and 20 h (b, d)

Fig.8 Micro morphologies of oxide scales formed on YHf-EHEA (a, b) and YHfPt-EHEA (c, d) two after hot corrosion for 20 h in mixed salt (Na₂SO₄ + NaCl) at 900 ^oC

Fig.9 Cross-sectional morphologies of YHf-EHEA (a, b) and YHfPt-EHEA (c, d) after hot corrosion for 20 h in mixed salt (Na₂SO₄ + NaCl) at 900 ^oC

Fig.10 Distributions of main elements on the cross-sections of YHf-EHEA (a) and YHfPt-EHEA (b) after hot corrosion for 20 h at 900 ^oC in mixed salt (Na₂SO₄ + NaCl)

Fig.11 Macro-morphologies of YHf-EHEA (a) and YHfPt-EHEA (b, c) after 100 h of hot corrosion in the mixed salt (Na₂SO₄ +NaCl) at 900 ^oC

Fig.12 Schematic diagrams of hot corrosion mechanisms of two EHEAs at 800 ^oC (a) and 900 ^oC (b)

1	Yeh J W. Alloy design strategies and future trends in high-entropy alloys [J]. JOM, 2013, 65: 1759
2	Yeh J W, Chen S K, Lin S J, et al. Nanostructured high‐entropy alloys with multiple principal elements: novel alloy design concepts and outcomes [J]. Adv. Eng. Mater., 2004, 6: 299
3	Gao X Z, Lu Y P, Zhang B, et al. Microstructural origins of high strength and high ductility in an AlCoCrFeNi_2.1 eutectic high-entropy alloy [J]. Acta Mater., 2017, 141: 59
4	Miao J W, Liang H, Zhang A J, et al. Tribological behavior of an AlCoCrFeNi_2.1 eutectic high entropy alloy sliding against different counterfaces [J]. Tribol. Int., 2021, 153: 106599
5	Lu Y P, Dong Y, Jiang H, et al. Promising properties and future trend of eutectic high entropy alloys [J]. Scr. Mater., 2020, 187: 202
6	Lu Y P, Dong Y, Guo S, et al. A promising new class of high-temperature alloys: eutectic high-entropy alloys [J]. Sci. Rep., 2014, 4: 6200 doi: 10.1038/srep06200 pmid: 25160691
7	Rahul M R, Samal S, Venugopal S, et al. Experimental and finite element simulation studies on hot deformation behaviour of AlCoCrFeNi_2.1 eutectic high entropy alloy [J]. J. Alloy. Compd., 2018, 749: 1115
8	Wang J L, Chen M H, Yang L L, et al. Nanocrystalline coatings on superalloys against high temperature oxidation: a review [J]. Corros. Commun., 2021, 1: 58
9	Min S L, Liu H, Wang J Q, et al. Early oxidation behavior of Ni-based Alloy 690 in simulated pressurized water reactor environment with varying surface conditions [J]. Corros. Commun., 2021, 4: 68
10	Song L F, Hu W B, Liao B K, et al. Corrosion behavior of AlCoCrFeNi_2.1 eutectic high-entropy alloy in Cl^--containing solution [J]. J. Alloy. Compd., 2023, 938: 168609
11	Zhang L, Ji Y, Yang B. Thermal stability and hot corrosion performance of the AlCoCrFeNi_2.1 high-entropy alloy coating by laser cladding [J]. Materials, 2023, 16: 5747
12	Yang Y F, Ren P, Bao Z B, et al. Microstructure and cyclic oxidation of a Hf-doped (Ni, Pt)Al coating for single-crystal superalloys [J]. J. Mater. Sci., 2020, 55: 11687
13	Li D Q, Guo H B, Wang D, et al. Cyclic oxidation of β-NiAl with various reactive element dopants at 1200 ^oC [J]. Corros. Sci., 2013, 66: 125
14	Lu J, Zhang H, Chen Y, et al. Y-doped AlCoCrFeNi_2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000 ^oC and 1100 ^oC [J]. Corros. Sci., 2021, 180: 109191
15	Hejrani E, Sebold D, Nowak W J, et al. Isothermal and cyclic oxidation behavior of free standing MCrAlY coatings manufactured by high-velocity atmospheric plasma spraying [J]. Surf. Coat. Technol., 2017, 313: 191
16	Zhao C S, Zhuo Y H, Zou Z H, et al. Effect of alloyed Lu, Hf and Cr on the oxidation and spallation behavior of NiAl [J]. Corros. Sci., 2017, 126: 334
17	Guo H B, Li D Q, Zheng L, et al. Effect of co-doping of two reactive elements on alumina scale growth of β-NiAl at 1200^oC [J]. Corros. Sci., 2014, 88: 197
18	Bai H, Su C, Xie Y, et al. High temperature corrosion of laser additively manufactured CoNiCrAlY [J]. Corros. Commun., 2022, 7: 35
19	Naumenko D, Pint B A, Quadakkers W J. Current thoughts on reactive element effects in alumina-forming systems: in memory of John Stringer [J]. Oxid. Met., 2016, 86: 1
20	Zhang J L, Fu G Y, Ning L K, et al. Research on hot corrosion behavior of nickel based single crystal high temperature alloy in different heat treatment states [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
21	Zhang Y S. Fluxing mechanism of hot corrosion and its limitation [J]. J. Chin. Soc. Corros. Prot., 1992, 12: 1
	张允书. 热腐蚀的盐溶机理及其局限性 [J]. 中国腐蚀与防护学报, 1992, 12: 1
22	Peng J B, Huang T H, Song P, et al. Effect of platinum and pre-oxidation on the hot corrosion behavior of aluminide coating with NaCl at 1050 ^oC [J]. Mater. Res. Express, 2020, 7: 116402
23	Sun J, Liu S B, Li W, et al. Hot corrosion behaviour of Pt modified aluminized NiCrAlYSi coating on a Ni-based single crystal superalloy [J]. Corros. Sci., 2019, 149: 207 doi: 10.1016/j.corsci.2019.01.014
24	Yang Y F, Yao H R, Bao Z B, et al. Modification of NiCoCrAlY with Pt: Part I. Effect of Pt depositing location and cyclic oxidation performance [J]. J. Mater. Sci. Technol., 2019, 35: 341 doi: 10.1016/j.jmst.2018.09.039
25	Xiao Q, Huang Q Y, Yang L L, et al. The cyclic oxidation behavior of a Pt modified γ' nanocrystalline coating at 1150 ^oC [J]. Corros. Sci., 2022, 208: 110638
26	Li C, Song P, Feng J, et al. Alumina growth behaviour on the surface-modified NiCoCrAl alloy by Pt and Hf at high temperature [J]. Appl. Surf. Sci., 2019, 479: 1178
27	Simms N J, Encinas-Oropesa A, Nicholls J R. Hot corrosion of coated and uncoated single crystal gas turbine materials [J]. Mater. Corros., 2008, 59: 476
28	Qiu P P, Shu X Y, Hu L L, et al. Research progress of Pt-modified aluminide coating on nickel-base superalloys [J]. J. Chin. Soc. Corros. Prot., 2022, 42: 186
	邱盼盼, 舒小勇, 胡林丽等. Pt改性镍基高温合金铝化物涂层研究进展 [J]. 中国腐蚀与防护学报, 2022, 42: 186 doi: 10.11902/1005.4537.2021.042
29	Zhao X Y, Guo H B, Gao Y Z, et al. Effects of dy on transient oxidation behavior of EB-PVD β-NiAl coatings at elevated temperatures [J]. Chin. J. Aeronaut., 2011, 24: 363
30	Wang J L, Chen M H, Cheng Y X, et al. Hot corrosion of arc ion plating NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy [J]. Corros. Sci., 2017, 123: 27
31	Liu R D, Jiang S M, Yu H J, et al. Preparation and hot corrosion behaviour of Pt modified AlSiY coating on a Ni-based superalloy [J]. Corros. Sci., 2016, 104: 162
32	Chen H, Ma G, Yang G J. A study on microstructures and properties of internal oxidation Ag-Mg-Ni alloy [J]. J. Xi'an Univ. Arts Sci. (Nat. Sci. Ed.), 2012, 15(2): 62
	陈昊, 马光, 杨冠军. 内氧化Ag-Mg-Ni合金的组织性能研究 [J]. 西安文理学院学报(自然科学版), 2012, 15(2): 62
33	Felten E J. Use of platinum and rhodium to improve oxide adherence on Ni-8Cr-6Al alloys [J]. Oxid. Met., 1976, 10: 23
34	Lai H, Knutsson P, Stiller K. The influence of platinum on the oxidation and sodium sulfate induced hot corrosion of NiAl diffusion coatings [J]. Mater. High Temp., 2011, 28: 302
35	Yang B, Li M D, Liu G M, et al. Hot corrosion behavior of inconel 625/NiCr coating prepared by HOVF [J]. J. Chin. Soc. Corros. Prot., 2016, 36: 483
	杨波, 李茂东, 刘光明等. 超音速喷涂Inconel 625/NiCr合金涂层的热腐蚀行为 [J]. 中国腐蚀与防护学报, 2016, 36: 483
36	Yi P, Hou L F, Du H Y, et al. NaCl induced corrosion of three austenitic stainless steels at high temperature [J]. J. Chin. Soc. Corros. Prot., 2022, 42: 288
	伊璞, 侯利锋, 杜华云等. 新型奥氏体不锈钢高温NaCl腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2022, 42: 288
37	Antunes R A, de Oliveira M C L. Corrosion in biomass combustion: a materials selection analysis and its interaction with corrosion mechanisms and mitigation strategies [J]. Corros. Sci., 2013, 76: 6
38	Mohanty B P, Shores D A. Role of chlorides in hot corrosion of a cast Fe-Cr-Ni alloy. Part I: Experimental studies [J]. Corros. Sci., 2004, 46: 2893
39	Chen L, Zhang X Z, Wu Y, et al. Effect of surface morphology and microstructure on the hot corrosion behavior of TiC/IN625 coatings prepared by extreme high-speed laser cladding [J]. Corros. Sci., 2022, 201: 110271
40	Goebel J A, Pettit F S. Na₂SO₄-induced accelerated oxidation (hot corrosion) of nickel [J]. Metall. Trans., 1970, 1: 1943
41	Deodeshmukh V, Gleeson B. Effects of platinum on the hot corrosion behavior of Hf-modified γ′-Ni₃Al + γ-Ni-based alloys [J]. Oxid. Met., 2011, 76: 43
42	Liu H, Li S, Jiang C Y, et al. Oxidation performance and interdiffusion behavior of a Pt-modified aluminide coating with pre-deposition of Ni [J]. Acta Metall. Sin. (Engl. Lett.), 2019, 32: 1490
43	Yang Y F, Ren S X, Ren P, et al. Hot corrosion and cyclic oxidation performance of a PtAl₂-dispersed (Ni, Pt)Al coating prepared by low-activity high-temperature aluminizing [J]. J. Alloy. Compd., 2022, 911: 164978

[1]	WANG Yue, GENG Shujiang, WANG Jinlong, WANG Fuhui, SUN Qingyun, WU Yong, XIA Siyao. Corrosion Resistance of CVD Aluminized Coating on K444 Alloy Beneath a Thin Deposits of 95%Na₂SO₄ + 5%NaCl at High Temperature[J]. 中国腐蚀与防护学报, 2025, 45(1): 127-136.
[2]	ZHANG Yongkang, ZHAI Haimin, LI Xuqiang, LI Wensheng. Hot Corrosion Behavior of Fe-based Amorphous Coatings in Mixed Salts of Na₂SO₄ + K₂SO₄ and Na₂SO₄ + NaCl[J]. 中国腐蚀与防护学报, 2025, 45(1): 92-102.
[3]	ZHANG Jinlong, FU Guangyan, NING Likui, LIU Enze, TAN Zheng, TONG Jian, ZHENG Zhi. Hot Corrosion Behavior of a Nickel Based Single Crystal High Temperature Alloy Subjected to Different Heat Treatments[J]. 中国腐蚀与防护学报, 2024, 44(6): 1625-1632.
[4]	YU Zheng, CHEN Minghui, WANG Jinlong, YANG Shasha, WANG Fuhui. Influence of Alkali Metal Sulfate- and Chloride-salts Content in Artificial Coal Ash on Corrosion Behavior of HR3C Steels With and Without Aluminizing[J]. 中国腐蚀与防护学报, 2024, 44(6): 1389-1398.
[5]	HU Qi, GENG Shujiang, WANG Jinlong, WANG Fuhui, SUN Qingyun, WU Yong, XIA Siyao. Hot Corrosion Behavior of Inconel 718 Without and With Aluminide Coating in Air Beneath a Thin Film of Salt Mixture of Na₂SO₄ + 5%NaCl[J]. 中国腐蚀与防护学报, 2024, 44(3): 623-634.
[6]	QU Weiwei, CHEN Zehao, PEI Yanling, LI Shusuo, WANG Fuhui. Spreading and Corrosion Behavior of CMAS Melt on Different Materials for Thermal Barrier Coating[J]. 中国腐蚀与防护学报, 2023, 43(6): 1407-1412.
[7]	WANG Hua, WANG Yingjie, LIU Enze. Hot Corrosion Behavior of New Type Co-Al-W Superalloys with Different Ni Contents[J]. 中国腐蚀与防护学报, 2023, 43(6): 1419-1426.
[8]	SHANG Jin, GU Yan, ZHAO Jing, WANG Zhe, ZHANG Bo, ZHAO Tongjun, CHEN Zehao, WANG Jinlong. Corrosion Behavior in Molten Salts at 850 ℃ and Its Effect on Mechanical Properties of Hastelloy X Alloy Fabricated by Additive Manufacturing[J]. 中国腐蚀与防护学报, 2023, 43(3): 671-676.
[9]	SHEN Jubao, CUI Yu, LIU Li, LIU Rui, MENG Fandi, WANG Fuhui. Cyclic Hot Corrosion Behavior of DZ40M and K452 Superalloys Beneath Molten Deposit NaCl[J]. 中国腐蚀与防护学报, 2023, 43(2): 280-288.
[10]	HU Yunyuan, QIAN Wei, HUA Yinqun, YE Yunxia, CAI Jie, DAI Fengze. Effect of Pre-corrosion of Gd₂Zr₂O₇ at 900-1300 ℃ on Its Hot Corrosion Behavior at 1250 ℃ Beneath Deposites of CaO-MgO-Al₂O₃-SiO₂[J]. 中国腐蚀与防护学报, 2022, 42(4): 687-692.
[11]	WU Jiajie, WANG Yanli. Hot Corrosion and Protection of Structural Materials in Molten Salt Reactor[J]. 中国腐蚀与防护学报, 2022, 42(2): 193-199.
[12]	YI Pu, HOU Lifeng, DU Huayun, LIU Xiaoda, JIA Jianwen, LI Yang, ZHANG Wei, XU Fanghong, WEI Yinghui. NaCl Induced Corrosion of Three Austenitic Stainless Steels at High Temperature[J]. 中国腐蚀与防护学报, 2022, 42(2): 288-294.
[13]	XIONG Yi, LIU Guangming, ZHAN Fuyuan, MAO Xiaofei, LUO Qin, HONG Jia, NI Jinfei, LIU Yongqiang. Hot Corrosion and Failure Behavior of Three Thermal Spraying Coatings in Simulated Atmosphere/Coal Ash Environment[J]. 中国腐蚀与防护学报, 2021, 41(3): 369-375.
[14]	JIANG Bochen, CAO Jiangdong, CAO Xueyu, WANG Jiantao, ZHANG Shaopeng. Hot Corrosion Behavior of Gd₂(Zr_1-_xCe_x)₂O₇ Thermal Barrier Coating Ceramics Exposed to Artificial Particulates of CMAS[J]. 中国腐蚀与防护学报, 2021, 41(2): 263-270.
[15]	YU Chuntang,YANG Yingfei,BAO Zebin,ZHU Shenglong. Research Progress in Preparation and Development of Excellent Bond Coats for Advanced Thermal Barrier Coatings[J]. 中国腐蚀与防护学报, 2019, 39(5): 395-403.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed