| Gradient thermal cycling behavior of a thermal barrier coating system constituted by NiCoCrAlY bond coat and pure metastable tetragonal nano-4YSZ top coat | |
| Yu, C. T.1,2; Liu, H.1,2; Zhang, J.3; Ullah, A.1; Bao, Z. B.1; Jiang, C. Y.1,4; Zhu, S. L.1; Wang, F. H.1,4 | |
| Corresponding Author | Bao, Z. B.(zbbao@imr.ac.cn) |
| 2019-08-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 45Issue:12Pages:15281-15289 |
| Abstract | Pure metastable tetragonal (t') phase 4YSZ top coats with thickness of 100 and 200 mu m were deposited on NiCoCrAlY-coated second generation single crystal superalloy by air plasma spray (APS). The two thermal barrier coatings were evaluated under gradient thermal cycling test using gas mixture of propane and oxygen. After flame shock test, the values of Young's modulus, hardness and degree of densification all exhibited a gradient distribution across YSZ thickness. In contrast to intensive sintering at surface of 200 mu m 4YSZ coating, the TBC sample with 4YSZ layer of 100 mu m underwent poor oxidation at interface of YSZ and bond coat, forming a duplex oxide scale: (Ni,Co)(Cr,Al)(2)O-4 spinet over Al2O3, which promoted the delamination at the top-coat/bond-coat interface. The resistance against gradient thermal cycling, the phase stability of 4YSZ and the failure mechanism of the TBCs, were discussed correlating to the effects of YSZ thickness. |
| Keyword | Thermal barrier coating Yttria stabilized zirconia Gradient thermal cycling Sintering Thermally grown oxide |
| Funding Organization | National Natural Science Foundation of China ; Liaoning BaiQianWan Talents Program |
| DOI | 10.1016/j.ceramint.2019.05.018 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51671202] ; National Natural Science Foundation of China[51301184] ; Liaoning BaiQianWan Talents Program |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000474322000097 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134309 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Bao, Z. B. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Wencui Rd 62, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Nonequilibrium Metall Mat Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Wenhua 72, Shenyang 110016, Liaoning, Peoples R China 4.Northeastern Univ, Corros & Protect Div, Shenyang Natl Lab Mat Sci, Wenhua Rd 3, Shenyang 110819, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Yu, C. T.,Liu, H.,Zhang, J.,et al. Gradient thermal cycling behavior of a thermal barrier coating system constituted by NiCoCrAlY bond coat and pure metastable tetragonal nano-4YSZ top coat[J]. CERAMICS INTERNATIONAL,2019,45(12):15281-15289. |
| APA | Yu, C. T..,Liu, H..,Zhang, J..,Ullah, A..,Bao, Z. B..,...&Wang, F. H..(2019).Gradient thermal cycling behavior of a thermal barrier coating system constituted by NiCoCrAlY bond coat and pure metastable tetragonal nano-4YSZ top coat.CERAMICS INTERNATIONAL,45(12),15281-15289. |
| MLA | Yu, C. T.,et al."Gradient thermal cycling behavior of a thermal barrier coating system constituted by NiCoCrAlY bond coat and pure metastable tetragonal nano-4YSZ top coat".CERAMICS INTERNATIONAL 45.12(2019):15281-15289. |
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