Effect of Cu on microstructure and properties of Co2CrFeNiMnCu x high-entropy alloy coatings prepared by laser cladding

doi:10.1177/02670844231216902

	Effect of Cu on microstructure and properties of Co₂CrFeNiMnCu _x high-entropy alloy coatings prepared by laser cladding
	Hu, Pingjiu 1,3; Zhu, Qingjun 2,3; Peng, Zhongbo 1; Duan, Jizhou2,3
	2024
发表期刊	SURFACE ENGINEERING
ISSN	0267-0844
卷号	40 期号:1 页码:84-99
通讯作者	Zhu, Qingjun([email protected]) ; Peng, Zhongbo([email protected])
摘要	High-entropy alloy coatings (HEACs) of Co2CrFeNiMnCux (x = 0, 0.25, 0.5, 0.75, 1.0, 1.25) were fabricated on Q235 steel surfaces by laser cladding. A portion of the HEACs (x = 0, 0.5 and 1.25) displayed a dual-phase FCC structure, while the remaining portion (x = 0.25, 0.75 and 1.0) exhibited a single-phase FCC structure. Furthermore, as the Cu content increased, the grain size of the coatings became finer and elongated. Due to the unique processing technology of laser cladding, the HEACs exhibited a hardness gradient from the top to the substrates. Cu segregated within the crystal and accumulated near the grain boundaries. The primary mechanism for protecting the steel substrate through coatings was passive films protection. Remarkably, the coatings demonstrated better anti-corrosion properties when the Cu content was 0.25, with a charge transfer resistance of 9.528 x 10( )(4)Omega cm(2), corrosion potential of -0.387 V and corrosion current density of 3.125 x 10(-7) A/cm(2).
关键词	high-entropy alloy coating laser cladding microstructure corrosion resistance
DOI	10.1177/02670844231216902
收录类别	SCI
语种	英语
资助项目	Key Research Program of Frontier Sciences, CAS[ZDBS-LY-DQC025]
WOS研究方向	Materials Science
WOS类目	Materials Science, Coatings & Films
WOS记录号	WOS:001225558500001
出版者	SAGE PUBLICATIONS INC
WOS关键词	HIGH-TEMPERATURE WEAR ; RESISTANCE ; CORROSION
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185746
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Zhu, Qingjun; Peng, Zhongbo
作者单位	1.Chongqing Jiaotong Univ, Sch Shipping & Naval Architecture, Chongqing 400074, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao, Peoples R China
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Hu, Pingjiu,Zhu, Qingjun,Peng, Zhongbo,et al. Effect of Cu on microstructure and properties of Co₂CrFeNiMnCu _x high-entropy alloy coatings prepared by laser cladding[J]. SURFACE ENGINEERING,2024,40(1):84-99.
APA	Hu, Pingjiu,Zhu, Qingjun,Peng, Zhongbo,&Duan, Jizhou.(2024).Effect of Cu on microstructure and properties of Co₂CrFeNiMnCu _x high-entropy alloy coatings prepared by laser cladding.SURFACE ENGINEERING,40(1),84-99.
MLA	Hu, Pingjiu,et al."Effect of Cu on microstructure and properties of Co₂CrFeNiMnCu _x high-entropy alloy coatings prepared by laser cladding".SURFACE ENGINEERING 40.1(2024):84-99.