| High temperature oxidation behavior and mechanism of a new Ni-Co-based superalloy | |
| Zhuang, Xinpeng1,2; Tan, Yi1,2; You, Xiaogang1,2,3; Li, Pengting1,2; Zhao, Longhai1,2; Cui, Chuanyong4; Zhang, Huixing1,2; Cui, Hongyang1,2 | |
| Corresponding Author | You, Xiaogang(youxiaogang1990@163.com) |
| 2021-07-01 | |
| Source Publication | VACUUM
 |
| ISSN | 0042-207X |
| Volume | 189Pages:9 |
| Abstract | The oxidation behavior and mechanism of a new Ni-Co-based superalloy developed for advanced engine turbine disks, were investigated at various temperature for different exposure times. The isothermal oxidation experiments, scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD) and electron probe microanalysis (EPMA) were employed to analyze the oxidation characteristics of the new Ni-Cobased superalloy. The results show that the oxidation kinetics can be described by a parabolic law at each temperature and the oxidation rate constants K at temperature of 800 degrees C, 900 degrees C and 1000 degrees C are 0.015, 0.033 and 0.138 mg(2) cm(-4) h(-1), respectively. The oxidation process is controlled by out-diffusion of metallic elements and in-diffusion of oxygen. Multifarious oxides are formed on the surface of the alloy due to the complex alloying elements. The oxide scale is consisted of three parts: the external oxide layer containing TiO2 and a small amount of Cr2O3; the middle oxide layer consisted of Cr2O3, TiO2, Al2O3 and the spinel phase; the internal oxide layer comprised of Al2O3. With further oxidation, TiO2 accumulates gradually on the external oxide layer because of the large diffusion distance of Ti, while O penetrated into the matrix can be captured by Al to prevent the further diffusion into alloy interior. |
| Keyword | Ni-Co-based superalloy Oxidation behavior Oxide layer Oxidation mechanism |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| DOI | 10.1016/j.vacuum.2021.110219 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2019YFA0705303] ; National Natural Science Foundation of China[91860123] ; National Natural Science Foundation of China[51974057] ; National Natural Science Foundation of China[52004051] |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000663207000002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160454 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | You, Xiaogang |
| Affiliation | 1.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China 2.Key Lab Energy Beam Met & Adv Mat Preparat Liaoni, Dalian 116024, Peoples R China 3.Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116024, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Superalloys Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zhuang, Xinpeng,Tan, Yi,You, Xiaogang,et al. High temperature oxidation behavior and mechanism of a new Ni-Co-based superalloy[J]. VACUUM,2021,189:9. |
| APA | Zhuang, Xinpeng.,Tan, Yi.,You, Xiaogang.,Li, Pengting.,Zhao, Longhai.,...&Cui, Hongyang.(2021).High temperature oxidation behavior and mechanism of a new Ni-Co-based superalloy.VACUUM,189,9. |
| MLA | Zhuang, Xinpeng,et al."High temperature oxidation behavior and mechanism of a new Ni-Co-based superalloy".VACUUM 189(2021):9. |
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