RF thermal plasma-assisted metallothermic synthesis of ultrafine ZrB2 powders |
| |
| Affiliation: | 1. College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China;2. Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China;1. Ionics Lab, School of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwang-Ju 500-757, Republic of Korea;2. Green Growth Technology Laboratory, Korea Electric Power Research Institute, 65 Munji-Ro, Yuseong-Gu, Daejeon 305-760, Republic of Korea;3. Department of Materials Science and Engineering, Hongik University, 72-1 Sangsu-dong Mapo-gu, Seoul 121-791, Republic of Korea;1. Metallurgical and Materials Engineering Department, National Institute of Technology, Warangal, India;2. Materials Group, Bhabha Atomic Research Centre, Mumbai, India;1. Center of Investigation in Engineering and Applied Sciences of the Autonomous University of the State of Morelos (CIICAp-UAEM), Av. Universidad, 1001 Cuernavaca, Mexico;2. Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3, Krzhyzhanovsky St., Kiev 252680, Ukraine;1. V. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, 41 Nauki avenue, 03028 Kyiv, Ukraine;2. L. V. Pisarzhevsky Institute of the Physical Chemistry NAS of Ukraine, 31 Nauki avenue, 03028 Kyiv, Ukraine |
| |
| Abstract: | Ultrafine ZrB2 powders were synthesized in radio-frequency atmospheric-pressure thermal plasma using ZrCl4, B, and Mg as raw materials. The metallothermic reaction was ignited by the high temperature flame when the mixed precursors were carried into thermal plasma, and then propagated with the exothermic reaction enthalpies and the external energy supplied by plasma flame. Both thermodynamic analysis and experiments were conducted. The as-prepared samples were characterized by X-ray Diffraction, Transmission Electron Microscopy, and particle size analyzer. Results showed that the obtained ZrB2 powders had particle size of about 100 nm and surface area of 30.75 m2/g. The laboratory production rate was about 300 g/h. |
| |
| Keywords: | A. Powders: solid state reaction B. Nanocomposites D. Borides E. Refractories. |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
