دورية أكاديمية
Effects of the wheel rotation speed during the melt-spinning process on the structural morphology and the thermoelectric properties of Ti0.5Zr0.5NiSn alloy
| العنوان: | Effects of the wheel rotation speed during the melt-spinning process on the structural morphology and the thermoelectric properties of Ti0.5Zr0.5NiSn alloy |
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| المؤلفون: | Nguyen Van Du, Nguyen Tu, Do Quang Trung, Noy Sysavanh, Manh Trung Tran, Tong Thi Hao Tam |
| المصدر: | Vietnam Journal of Science, Technology and Engineering, Vol 65, Iss 4 (2023) |
| بيانات النشر: | Vietnam Ministry of Science and Technology, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Science |
| مصطلحات موضوعية: | arc melting, half-Heusler, melt-spinning, spark plasma sintering, TEs, Science |
| الوصف: | Half-Heusler alloys based on (Ti, Hf, Zr)NiSn possess excellent mechanical and chemical properties as well as high thermal stability, making them promising materials for high-performance thermoelectric (TE) power generators. However, the high cost of Hf limits its use in these alloys. Therefore, Hf-free (Ti, Zr)NiSn alloys synthesised using a rapid process offer a cost-effective approach to reducing product costs. In this study, we employed the fast synthesis melt-spinning (MS) method to prepare an Hf-free Ti0.5Zr0.5NiSn alloy while systematically optimising MS conditions. We found that by varying the rotation speed of the copper wheel in the MS system from 1000 to 4000 rpm, a marked change in the structural morphology of the melt-spun ribbons occurred. Grain growth during the spark plasma sintering process significantly affected TE properties of the bulk Ti0.5Zr0.5NiSn alloy depending on the structural morphology. As a result, a maximum ZT of ~1.1 at 823 K was achieved for a wheel rotation speed of 3000 rpm, which is comparable to ZT values obtained from the (Ti, Hf, Zr)NiSn-based half-Heusler alloys prepared by other methods. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2525-2461 2615-9937 |
| Relation: | https://vietnamscience.vjst.vn/index.php/vjste/article/view/1168; https://doaj.org/toc/2525-2461; https://doaj.org/toc/2615-9937 |
| URL الوصول: | https://doaj.org/article/b273599f3dff4618aa4f529f3bd37ad2 |
| رقم الأكسشن: | edsdoj.b273599f3dff4618aa4f529f3bd37ad2 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25252461 26159937 |
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