Hot Corrosion Behavior of Four Modified Aluminide Coatings on DZ38G Alloy

doi:10.11902/1005.4537.2013.232

Journal of Chinese Society for Corrosion and protection

2014, Vol. 34

Issue (6): 502-506 DOI: 10.11902/1005.4537.2013.232

Current Issue | Archive | Adv Search

Hot Corrosion Behavior of Four Modified Aluminide Coatings on DZ38G Alloy

WU Duoli, ZHANG Hongyu, WEI Hua(

), ZHENG Qi, JIN Tao, SUN Xiaofeng

Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Download:

HTML

PDF(6251KB)
Export: BibTeX | EndNote (RIS)

Abstract

Four modified aluminide coatings were prepared on superalloy DZ38G, which include a two step co-cementation coating NiCr-CrAl and three one step co-cementation coatings Co-Al, Al-Si and Al-Ti. Then their microstructure and hot corrosion behavior in a salt melt of 25%NaCl (mass fraction)+75%Na₂SO₄ (mass fraction) at 900 ℃ were investigated. The results show that a continuously compact scale of corrosion products with good adhesion to the matrix could form on Ti-Al coating during corrosion, therefore, the Al-Ti coating may provide much better protectiveness to the alloy rather than the other three coatings in this kind of salt mixture.

Key words: superalloy coating hot corrosion

ZTFLH:

TG174.3

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Duoli WU
	Hongyu ZHANG
	Hua WEI
	Qi ZHENG
	Tao JIN
	Xiaofeng SUN

Cite this article:

WU Duoli, ZHANG Hongyu, WEI Hua, ZHENG Qi, JIN Tao, SUN Xiaofeng. Hot Corrosion Behavior of Four Modified Aluminide Coatings on DZ38G Alloy. Journal of Chinese Society for Corrosion and protection, 2014, 34(6): 502-506.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2013.232 OR https://www.jcscp.org/EN/Y2014/V34/I6/502

Table 1 Chemical compositions of the out layer of four aluminide coatings

Fig.1 Hot corrosion kinetic curves of the four coatings on DZ38G alloy at 900 ℃

Fig.2 Surface XRD spectra of the four coatings on DZ38G alloy after hot corrosion for 100 h at 900 ℃

Fig.3 Surface morphologies of NiCr-CrAl coating on DZ38G alloy after hot corrosion for 100 h: (a) overall morphology, (b) local morphology

Fig.4 Surface morphologies of Co-Al coating on DZ38G alloy after corrosion for 100 h:

(a) overall morphology, (b) local morphology

Fig.5 Surface morphologies of Al-Si coating on DZ38G alloy after hot corrosion for 100 h:

(a) overall morphology, (b) local morphology

Fig.6 Surface morphologies of Al-Ti coating on DZ38G alloy after hot corrosion for 100 h:

(a) overall morphology, (b) local morphology

Fig.7 Cross sectional morphologies of NiCr-CrAl coating (a), Co-Al coating (b), Al-Si coating (c) and Al-Ti coating (d) on DZ38G alloy after hot corrosion for 100 h

[1]	Li M H, Sun X F, Jin T, et al. Oxidation behavior of a single-crystal Ni-base superalloy in air-II: At 1000, 1100, and 1150 ℃[J]. Oxid. Met., 2003, 60(1/2): 195-210
[2]	Li M H, Sun X F, Li J G, et al. Oxidation behavior of a single-crystal Ni-base superalloy in air-I: At 800 and 900 ℃[J]. Oxid. Met., 2003, 59(5/6): 591-605
[3]	Guo J T. Development report of superalloy [A]. National Conference on Superalloy [C]. Dalian, 2004
	(郭建亭. 高温合金的发展报告 [A]. 全国高温合金会议 [C]. 大连, 2004)
[4]	Li M S. High Temperature Corrosion of Metals[M]. Beijing: Metallurgical Industry Press, 2001: 410-433
	(李美栓. 金属的高温腐蚀[M]. 北京: 冶金工业出版社, 2001: 410-443)
[5]	Schneider K, Grunling H W. Mechanical aspects of high temperature coatings[J]. Thin Solid Films, 1983, 107(4): 395-416
[6]	Veys J M, Meverel R. Influence of protective coatings on the mechanical properties of CMSX-2 and Cotan784[J]. Mater. Sci. Eng., 1987, 88: 253-260
[7]	Meetham G W. High temperature materials in gas turbine engines[J]. Mater. Des., 1988, 9(4): 213-219
[8]	Itoh Y, Saitoh M, Ishiwata Y. Influence of high-temperature protective coatings on the mechanical properties of nickel-based superalloys[J]. J. Mater. Sci., 1999, 34(16): 3957-3966

[1]	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.
[2]	CAO Jingyi, YANG Yange, FANG Zhigang, SHOU Haiming, LI Liang, FENG Yafei, WANG Xingqi, CHU Guangzhe, ZHAO Yi. Failure Behavior of Fresh Water Tank Coating in Different Water[J]. 中国腐蚀与防护学报, 2021, 41(2): 209-218.
[3]	LUAN Hao, MENG Fandi, LIU Li, CUI Yu, LIU Rui, ZHENG Hongpeng, WANG Fuhui. Preparation and Anticorrosion Performance of M-phenylenediamine-graphene Oxide/Organic Coating[J]. 中国腐蚀与防护学报, 2021, 41(2): 161-168.
[4]	LIU Yang, WU Jinyi, YAN Xiaoyu, CHAI Ke. *Effect of Bacillus flexus* on Degradation of Polyurethane Varnish Coating in Marine Environment**[J]. 中国腐蚀与防护学报, 2021, 41(1): 36-42.
[5]	YU Hongfei, SHAO Bo, ZHANG Yue, YANG Yange. Preparation and Properties of Zr-based Conversion Coating on 2A12 Al-alloy[J]. 中国腐蚀与防护学报, 2021, 41(1): 101-109.
[6]	HAN Yuetong, ZHANG Pengchao, SHI Jiefu, LI Ting, SUN Juncai. Surface Modification of TA1 Bipolar Plate for Proton Exchange Membrane Fuel Cell[J]. 中国腐蚀与防护学报, 2021, 41(1): 125-130.
[7]	REN Yan, QIAN Yuhai, ZHANG Xintao, XU Jingjun, ZUO Jun, LI Meishuan. Effect of Thermal Shock on Mechanical Properties of Siliconized Graphite with ZrB₂-SiC-La₂O₃/SiC Coating[J]. 中国腐蚀与防护学报, 2021, 41(1): 29-35.
[8]	SHI Kunyu, WU Weijin, ZHANG Yi, WAN Yi, YU Chuanhao. Electrochemical Properties of Nb Coating on TC4 Substrate in Simulated Body Solution[J]. 中国腐蚀与防护学报, 2021, 41(1): 71-79.
[9]	LI Congwei, DU Shuangming, ZENG Zhilin, LIU Eryong, WANG Feihu, MA Fuliang. Effect of Current Density on Microstructure, Wear and Corrosion Resistance of Electrodeposited Ni-Co-B Coating[J]. 中国腐蚀与防护学报, 2020, 40(5): 439-447.
[10]	SUN Shuo, YANG Jie, QIAN Xinzhu, CHANG Renli. Preparation and Electrochemical Corrosion Behavior of Electroless Plated Ni-Cr-P Alloy Coating[J]. 中国腐蚀与防护学报, 2020, 40(3): 273-280.
[11]	CAO Jingyi, WANG Zhiqiao, LI Liang, MENG Fandi, LIU Li, WANG Fuhui. Failure Mechanism of Organic Coating with Modified Graphene Under Simulated Deep-sea Alternating Hydrostatic Pressure[J]. 中国腐蚀与防护学报, 2020, 40(2): 139-145.
[12]	SHI Chao,SHAO Yawei,XIONG Yi,LIU Guangming,YU Yuelong,YANG Zhiguang,XU Chuanqin. Influence of Silane Coupling Agent Modified Zinc Phosphate on Anticorrosion Property of Epoxy Coating[J]. 中国腐蚀与防护学报, 2020, 40(1): 38-44.
[13]	YANG Yinchu,FU Xiuqing,LIU Lin,MA Wenke,SHEN Moqi. Electrochemical Corrosion of Ni-P-BN(h)-Al₂O₃ Composite Coating Deposited by Spray Electrodeposition[J]. 中国腐蚀与防护学报, 2020, 40(1): 57-62.
[14]	ZHAO Shuyan,TONG Xinhong,LIU Fuchun,WENG Jinyu,HAN En-Hou,LI Xiaohui,YANG Lin. Corrosion Resistance of Three Zinc-rich Epoxy Coatings[J]. 中国腐蚀与防护学报, 2019, 39(6): 563-570.
[15]	WANG Guirong,ZHENG Hongpeng,CAI Huayang,SHAO Yawei,WANG Yanqiu,MENG Guozhe,LIU Bin. Failure Process of Epoxy Coating Subjected Test of Alternating Immersion in Artificial Seawater and Dry in Air[J]. 中国腐蚀与防护学报, 2019, 39(6): 571-580.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed