| Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling | |
| Liu, Y. Z.1,2; Hu, X. B.2,3 | |
| Corresponding Author | Liu, Y. Z.(yzliu10b@alum.imr.ac.cn) ; Hu, X. B.(xbhu@northwestern.edu) |
| 2020-04-05 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 819Pages:13 |
| Abstract | Segregation and microstructural evolution at interfaces of thermal barrier coatings (TBCs) during thermal cycling were systematically investigated using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The as-sprayed TBCs were thermally cycled between 1100 degrees C and ambient temperature up to 3000 cycles. Results show that phosphorus, sulfur, and yttrium co-segregate at the top coat (TC)/bond coat (BC) interface after 3000 cycles. The above co-segregation at the BC/substrate interface was delayed by 1000 cycles. Chemical components of thermally grown oxide (TGO) layers at both the TC/BC and BC/substrate interfaces change from O and Al to O, Al, Cr, Co and Ni as the thermal cycling proceeded. The corresponding oxides in the TGO layers evolved from alpha-Al2O3 to alpha-Al2O3, Cr2O3, NiO and spinel phases. Controlled by the element diffusion rate and selective internal oxidation, evolution of the thickness of the TGO layers followed a natural logarithmic law. (C) 2019 Elsevier B.V. All rights reserved. |
| Keyword | Thermal barrier coatings (TBCs) Microstructural evolution Interfacial oxidation Oxidation kinetics Element segregation Scanning transmission electron microscopy (STEM) |
| Funding Organization | Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Ningbo Municipality ; Joint Funds of NSFC-ZJ |
| DOI | 10.1016/j.jallcom.2019.153026 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of Zhejiang Province[LY18E050027] ; Natural Science Foundation of Ningbo Municipality[2018A610145] ; Joint Funds of NSFC-ZJ[U1609208] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000507378300131 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136681 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Y. Z.; Hu, X. B. |
| Affiliation | 1.Ningbo Univ Technol, Sch Mech Engn, Ningbo 315336, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA |
| Recommended Citation GB/T 7714 | Liu, Y. Z.,Hu, X. B.. Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,819:13. |
| APA | Liu, Y. Z.,&Hu, X. B..(2020).Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling.JOURNAL OF ALLOYS AND COMPOUNDS,819,13. |
| MLA | Liu, Y. Z.,et al."Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling".JOURNAL OF ALLOYS AND COMPOUNDS 819(2020):13. |
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