Corrosion behavior of (Al7.5Co21.9Cr10.9Ti5.0Fe21.9Ni32.8)100-xCux high-entropy alloys in 0.5 M H2SO4 solution
文献类型：期刊论文
| 作者 | Fu, Junwei1; Cheng, Yonghe2,3; Wan, Yunfang2; Tian, Qixin2; Zhang, Ruiyong1; Hou, Baorong1 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 229页码:17 |
| 关键词 | High-entropy alloys H2SO4 solution Corrosion resistance Pitting corrosion Inclusion |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2025.115527 |
| 通讯作者 | Fu, Junwei(fujw@qdio.ac.cn) ; Wan, Yunfang(yunfangwan@gxas.cn) |
| 英文摘要 | Effect mechanism of Cu content on the microstructure and corrosion behavior of (Al7.5Co21.9Cr10.9Ti5.0Fe21.9Ni32.8)(100-x)Cu-x (x = 0.5, 2.5, 5.0, 10.0, 15.0) high-entropy alloys (HEAs) in 0.5 M H2SO4 solution is discussed. The microstructure is composed of dendritic FCC phase and spherical ordered L1(2) phase for all the HEAs. For the HEAs with 0.5 and 2.5 at.% Cu addition, the dominant diffraction peak is (111). When Cu addition is increased to 5.0, 10.0 and 15.0 at.%, the dominant diffraction peak is transformed from (111) to (200), which suggests that the corrosion resistance will be reduced when Cu addition is higher than 5.0 at.% since for alloys with face-centered cubic (FCC) structure (111) is the close-packed plane. For the HEA with 2.5 at.% Cu, almost no element segregation between the spherical ordered L1(2) phase and the surrounding FCC matrix can be detected. However, for the HEAs with higher Cu content, Cu atoms segregate to interdendritic region to form L1(2) phase with strong Cu enrichment. Galvanic corrosion between L1(2) phase and surrounding FCC matrix will be generated, which will impair the corrosion resistance of interdendritic region. No pitting can be observed around the single TiN inclusions. Pitting corrosion only initiates at the interface between the outer TiC in the compound type inclusion and the surrounding FCC matrix. For the HEA with 2.5 at.% Cu, more bound water in the passivation film of can be found and the content ratio of the mixture of Cr and Ni oxides is higher than other HEAs. Immersion and electrochemical tests showed that the HEA with 2.5 at.% Cu displays the best corrosion resistance with the highest R-f = 5.8708 x 10(4) Omega.cm(2) and the lowest icorr = 4.38 x 10(-7) A/cm(2). |
| WOS关键词 | PASSIVE FILM FORMATION ; STAINLESS-STEEL ; ELECTROCHEMICAL CHARACTERIZATION ; ELECTRONIC-PROPERTIES ; MICROSTRUCTURE ; REPASSIVATION ; RESISTANCE ; STRENGTH ; SURFACE ; NACL |
| 资助项目 | Guangxi Science and Technology Program[Guike AB23026059] ; Guangxi Science and Technology Program[Guike AA23026007] ; Guangxi Science and Technology Program[Guike AA24263064] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001567717500001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203356]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Fu, Junwei; Wan, Yunfang |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Guangxi Acad Sci, Guangxi Acad Marine Sci, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China 3.Guangxi Univ Nationalities, Sch Chem & Chem Engn, Nanning 530006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu, Junwei,Cheng, Yonghe,Wan, Yunfang,et al. Corrosion behavior of (Al7.5Co21.9Cr10.9Ti5.0Fe21.9Ni32.8)100-xCux high-entropy alloys in 0.5 M H2SO4 solution[J]. MATERIALS CHARACTERIZATION,2025,229:17. |
| APA | Fu, Junwei,Cheng, Yonghe,Wan, Yunfang,Tian, Qixin,Zhang, Ruiyong,&Hou, Baorong.(2025).Corrosion behavior of (Al7.5Co21.9Cr10.9Ti5.0Fe21.9Ni32.8)100-xCux high-entropy alloys in 0.5 M H2SO4 solution.MATERIALS CHARACTERIZATION,229,17. |
| MLA | Fu, Junwei,et al."Corrosion behavior of (Al7.5Co21.9Cr10.9Ti5.0Fe21.9Ni32.8)100-xCux high-entropy alloys in 0.5 M H2SO4 solution".MATERIALS CHARACTERIZATION 229(2025):17. |
入库方式： OAI收割
来源：海洋研究所
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