Analysis on the key role in corrosion behavior of CoCrNiAlTi-based high entropy alloy
文献类型：期刊论文
| 作者 | Huang, Lei2; Wang, Xuejie1; Zhao, Xingchuan2; Wang, Changzheng2; Yang, Yuansheng3 |
| 刊名 | MATERIALS CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 259页码:9 |
| ISSN号 | 0254-0584 |
| 关键词 | High entropy alloys Corrosion behavior Microstructure Chemical composition |
| DOI | 10.1016/j.matchemphys.2020.124007 |
| 通讯作者 | Wang, Changzheng(wangchangzheng@lcu.edu.cn) |
| 英文摘要 | In this study, CoCr2Ni2AlTi, Co2Cr2Ni2AlTi and CoCr2Ni3AlTi alloys are prepared using vacuum arc melting furnace. The morphology, microstructure, compositions and corrosion behavior in 3.5 wt% NaCl solution or 0.5 M H2SO4 solution are investigated by means of scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and electro-chemical workstation, respectively. The results show that all high entropy alloys (HEAs) display analogous petal-like equi-axed dendrite and the dendrite arms are thin-like strip. The BCC1 phase is mainly rich in Al-Ni-Ti elements, the BCC2 is rich in Cr element and the FCC phase is composed of Co-Ti elements. Besides, the high contents of Co can promote distribution of Cr into inter-dendrite and can promote the formation of the nano-particles. In addition, all HEAs have better corrosion resistance than 304 stainless steel or other corrosion resistant HEAs and Co2Cr2Ni2AlTi has the best corrosion resistance in three HEAs under NaCl solution or H2SO4 solution. Cr element can form the passivation film Cr2O3, which has an important role in improving corrosion resistance. Co element can increase the stability of the passivation film and attenuates the hydrolysis of Cr3+. Ni element cannot increase the stability of the passivation film and promote the hydrolysis of Cr3+ in H2SO4 solution. |
| 资助项目 | Nature Science Foundation of Shandong Province[ZR2018MEM005.D: \MYFILES\ELSEVIER\MAC\00124007\SCE\gs1] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000615731100001 |
| 资助机构 | Nature Science Foundation of Shandong Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/160444]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Changzheng |
| 作者单位 | 1.Qingdao Univ, Sch Mat Sci & Engn, Qingdao 266071, Shandong, Peoples R China 2.Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Lei,Wang, Xuejie,Zhao, Xingchuan,et al. Analysis on the key role in corrosion behavior of CoCrNiAlTi-based high entropy alloy[J]. MATERIALS CHEMISTRY AND PHYSICS,2021,259:9. |
| APA | Huang, Lei,Wang, Xuejie,Zhao, Xingchuan,Wang, Changzheng,&Yang, Yuansheng.(2021).Analysis on the key role in corrosion behavior of CoCrNiAlTi-based high entropy alloy.MATERIALS CHEMISTRY AND PHYSICS,259,9. |
| MLA | Huang, Lei,et al."Analysis on the key role in corrosion behavior of CoCrNiAlTi-based high entropy alloy".MATERIALS CHEMISTRY AND PHYSICS 259(2021):9. |
入库方式： OAI收割
来源：金属研究所
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