The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF

doi:10.1016/j.bioelechem.2023.108633

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	The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF
	Cheng, Jie 3,4; Wu, Yuping 4; Duan, Jizhou 2; Polat, Gokhan 1; Hong, Sheng 4; Cheng, Jiangbo 4
刊名	BIOELECTROCHEMISTRY
	2024-04-01
卷号	156 页码:10
关键词	Cu-based MEA coating HVOF spraying Thermo-Calc simulation SRB Microbiologically influenced corrosion
ISSN号	1567-5394
DOI	10.1016/j.bioelechem.2023.108633
通讯作者	Wu, Yuping(wuyuping@hhu.edu.cn) ; Duan, Jizhou(duanjz@qdio.ac.cn)
英文摘要	In this study, a novel Cu-based (Cu55Al20Ni12Ti8Si5, at.%) medium-entropy alloy (MEA) coating was prepared by high-velocity oxygen-fuel (HVOF) spraying technology. Thermo-Calc was employed to simulate the phase diagram of the alloy system. Phase composition and microstructure of the as-sprayed coating were characterized by means of XRD, FESEM, TEM and STEM/EDX. The effect of sulfate-reducing bacteria (SRB) on the corrosion behavior of the coating and the as-cast Ni-Al bronze (NAB) was investigated using electrochemical measurements and surface characterization. The Thermo-Cala simulation results showed that the alloy system presented a single BCC solid solution phase, while the detailed characterization of microstructure indicated that a few NiTi-rich B2ordered precipitates could be also found in the as-sprayed coating other than the Cu-rich BCC matrix. Electrochemical studies illustrated that the coating exhibited superior corrosion resistance than the NAB in SRB medium, the corrosion acceleration efficiency induced by SRB of the NAB (95.3 %) was more severe than that of the coating (63.8 %). Surface analysis results demonstrated the occurrence of pitting corrosion and the formation of Cu2S on the coating surface after corroded in SRB medium. Corrosive metabolite HS- induced microbiologically influenced corrosion was considered as the main corrosion acceleration mechanism caused by SRB.
资助项目	National Natural Science Foundation of China[52271345] ; National Natural Science Foundation of China[51979083] ; National Natural Science Foundation of China[51975183] ; Natural Science Foundation of Jiangsu Province, China[BK20201316]
WOS关键词	SULFATE-REDUCING BACTERIA ; MICROBIOLOGICALLY INFLUENCED CORROSION ; DUPLEX STAINLESS-STEEL ; PSEUDOMONAS-AERUGINOSA ; ANTIBACTERIAL PERFORMANCE ; BEARING ; COPPER ; RESISTANCE ; MICROSTRUCTURE ; DESIGN
WOS研究方向	Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Biophysics ; Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:001164869400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/184559]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Wu, Yuping; Duan, Jizhou
作者单位	1.Izmir Katip Celebi Univ, Dept Met & Mat Engn, TR-35620 Izmir, Turkiye 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China 4.Hohai Univ, Coll Mat Sci & Engn, Nanjing 211100, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Jie,Wu, Yuping,Duan, Jizhou,et al. The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF[J]. BIOELECTROCHEMISTRY,2024,156:10.
APA	Cheng, Jie,Wu, Yuping,Duan, Jizhou,Polat, Gokhan,Hong, Sheng,&Cheng, Jiangbo.(2024).The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF.BIOELECTROCHEMISTRY,156,10.
MLA	Cheng, Jie,et al."The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF".BIOELECTROCHEMISTRY 156(2024):10.