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High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials
Open accessAbstract
High-entropy pyrochlore-type structures based on rare-earth zirconates are successfully produced by conventional solid-state reaction method. Six rare-earth oxides (La 2 O 3 , Nd 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Gd 2 O 3 , and Y 2 O 3 ) and ZrO 2 are used as the raw powders. Five out of the six rare-earth oxides with equimolar ratio and ZrO 2 are mixed and sintered at different temperatures for investigating the reaction process. The results demonstrate that the high-entropy pyrochlores (5RE 1/5 ) 2 Zr 2 O 7 have been formed after heated at 1000°C. The (5RE 1/5 ) 2 Zr 2 O 7 are highly sintering resistant and possess excellent thermal stability. The thermal conductivities of the (5RE 1/5 ) 2 Zr 2 O 7 high-entropy ceramics are below 1 W·m –1 ·K –1 in the temperature range of 300–1200°C. The (5RE 1/5 ) 2 Zr 2 O 7 can be potential thermal barrier coating materials.
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Citations
Cited by
Oses, C., Toher, C., & Curtarolo, S. (2020) · Nature Reviews Materials · doi:10.1038/s41578-019-0170-8 · Cited by 2,081
High-entropy ceramics: Present status, challenges, and a look forward
Xiang, H., Xing, Y., Dai, F.-Z., Wang, H., Su, L., Miao, L., Zhang, G., Wang, Y., Qi, X., Yao, L., et al. (2021) · Journal of Advanced Ceramics · doi:10.1007/s40145-021-0477-y · Cited by 1,109
Self-citationHigh-entropy ceramics: Review of principles, production and applications
Akrami, S., Edalati, P., Fuji, M., & Edalati, K. (2021) · Materials Science and Engineering: R: Reports · doi:10.1016/j.mser.2021.100644 · Cited by 1,008
Understanding the Role of Entropy in High Entropy Oxides
Aamlid, S. S., Oudah, M., Rottler, J., & Hallas, A. M. (2023) · Journal of the American Chemical Society · doi:10.1021/jacs.2c11608 · Cited by 574
Musicó, B. L., Gilbert, D., Ward, T. Z., Page, K., George, E., Yan, J., Mandrus, D., & Keppens, V. (2020) · APL Materials · doi:10.1063/5.0003149 · Cited by 299
Metadata
- Authors
- Li, F., Zhou, L., Liu, J.-X., Liang, Y., & Zhang, G.-J.
- Venue
- Journal of Advanced Ceramics
- Publisher
- Tsinghua University Press
- Published
- 2019-07-25
- Volume
- 8
- Issue
- 4
- Pages
- 576-582
- ISSN
- 2226-4108 (ISSN-L)
- 2227-8508
- OpenAlex
- W2963230088
- Cited by
- 475
- References
- 0
- FWCI
- 32.58
- Type
- journal article
- Language
- en
- Open access
- gold
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- Li, F., Zhou, L., Liu, J.-X., Liang, Y., & Zhang, G.-J. (2019). High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials. Journal of Advanced Ceramics. https://doi.org/10.1007/s40145-019-0342-4
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