| Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure | |
| Hu, Wanpeng1,2; Lei, Yiming1,2; Zhang, Jie1; Wang, Jingyang1 | |
| Corresponding Author | Zhang, Jie(jiezhang@imr.ac.cn) |
| 2019-09-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:9Pages:2064-2069 |
| Abstract | The thermal and environmental barrier coatings (T/EBC) are technologically important for advanced propulsion engine system. In this study. RE4Hf3O12 (RE=Ho, Er, Tm) with defect fluorite structure was investigated for potential use as top TBC layer. Dense pellets were fabricated via a hot pressing method and the mechanical and thermal properties were characterized. RE4Hf3O12 (RE=Ho, Er, Tm) possessed a high Vickers hardness of 11 GPa. The material retained high elastic modulus at elevated temperatures up to 1773 K, which made it attractive for high temperature application. The coefficient of thermal expansion (CTE) of RE4Hf3O12 (RE = Ho, Er, Tm) laid in the range between 7 x 10(-6) K-1 to 10 x 10(-6) K-1 from 473 K to 1673 K. In addition, the rare earth hafnates exhibited lower thermal conductivity which rendered it a good candidate material for thermal barrier applications. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Rare earth hafnate Thermal/environmental barrier coating Mechanical property Thermal property |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; International Cooperation Key Program |
| DOI | 10.1016/j.jmst.2019.04.025 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFB0703201] ; National Natural Science Foundation of China[51402311] ; National Natural Science Foundation of China[51372252] ; National Natural Science Foundation of China[51772302] ; International Cooperation Key Program[174321KYSB20180008] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000475870600033 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134626 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Jie |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Adv Ceram & Composites Div, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Hu, Wanpeng,Lei, Yiming,Zhang, Jie,et al. Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):2064-2069. |
| APA | Hu, Wanpeng,Lei, Yiming,Zhang, Jie,&Wang, Jingyang.(2019).Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),2064-2069. |
| MLA | Hu, Wanpeng,et al."Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):2064-2069. |
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